     1                                  ; ****************************************************************************
     2                                  ; pr0.s (pr8086.s) - print file - by Erdogan Tan - 25/06/2022
     3                                  ; ----------------------------------------------------------------------------
     4                                  ; Retro UNIX 8086 v1 - file print utility 
     5                                  ;
     6                                  ; [ Last Modification: 29/06/2022 ]
     7                                  
     8                                  ; Derived from disassembled source code of unix v2 '/bin/pr' 
     9                                  ;
    10                                  ; ****************************************************************************
    11                                  ; [ s2-bits.gz - bin/pr (archive date: 17-01-1972) ]
    12                                  
    13                                  ; Assembler: NASM v2.15
    14                                  ; ((nasm pr0.s -l pr0.txt -o pr0 -Z error.txt))
    15                                  
    16                                  ; pr0.s (26/06/2022, Retro UNIX 8086 v1)
    17                                  ; pr1.s (25/06/2022, Retro UNIX 386 v1 & v1.1)
    18                                  ; pr2.s (26/06/2022, Retro UNIX 386 v1.2)
    19                                  
    20                                  ; UNIX v1 system calls
    21                                  _rele 	equ 0
    22                                  _exit 	equ 1
    23                                  _fork 	equ 2
    24                                  _read 	equ 3
    25                                  _write	equ 4
    26                                  _open	equ 5
    27                                  _close 	equ 6
    28                                  _wait 	equ 7
    29                                  _creat 	equ 8
    30                                  _link 	equ 9
    31                                  _unlink	equ 10
    32                                  _exec	equ 11
    33                                  _chdir	equ 12
    34                                  _time 	equ 13
    35                                  _mkdir 	equ 14
    36                                  _chmod	equ 15
    37                                  _chown	equ 16
    38                                  _break	equ 17
    39                                  _stat	equ 18
    40                                  _seek	equ 19
    41                                  _tell 	equ 20
    42                                  _mount	equ 21
    43                                  _umount	equ 22
    44                                  _setuid	equ 23
    45                                  _getuid	equ 24
    46                                  _stime	equ 25
    47                                  _quit	equ 26	
    48                                  _intr	equ 27
    49                                  _fstat	equ 28
    50                                  _emt 	equ 29
    51                                  _mdate 	equ 30
    52                                  _stty 	equ 31
    53                                  _gtty	equ 32
    54                                  _ilgins	equ 33
    55                                  _sleep	equ 34 ; Retro UNIX 8086 v1 feature only !
    56                                  _msg    equ 35 ; Retro UNIX 386 v1 feature only !
    57                                  _geterr	equ 36 ; Retro UNIX 386 v1 feature only !
    58                                  ; 12/01/2022 - Retro UNIX 386 v1.2
    59                                  ; Retro UNIX 386 v2 system calls
    60                                  _setgid	equ 37
    61                                  _getgid	equ 38
    62                                  _sysver	equ 39 ; (get) Retro Unix 386 version
    63                                  
    64                                  ;;;
    65                                  ESCKey equ 1Bh
    66                                  EnterKey equ 0Dh
    67                                  
    68                                  %macro sys 1-4
    69                                      ; Retro UNIX 8086 v1 system call.
    70                                      %if %0 >= 2   
    71                                          mov bx, %2
    72                                          %if %0 >= 3
    73                                              mov cx, %3
    74                                              %if %0 >= 4
    75                                                 mov dx, %4
    76                                              %endif
    77                                          %endif
    78                                      %endif
    79                                      mov ax, %1
    80                                      int 20h
    81                                  %endmacro
    82                                  
    83                                  ; 25/06/2022
    84                                  struc stat
    85                                  	; Note: This is for Retro UNIX v1 'sysstat' output !!!
    86                                  	; (34 bytes)
    87 00000000 ????                    	.inode:  resw 1	
    88 00000002 ????                    	.mode:	 resw 1
    89 00000004 ??                      	.nlinks: resb 1
    90 00000005 ??                      	.uid:	 resb 1
    91 00000006 ????                    	.size:	 resw 1
    92 00000008 <res 10h>               	.dskptr: resw 8
    93 00000018 ????????                	.ctime:	 resd 1
    94 0000001C ????????                	.mtime:	 resd 1
    95 00000020 ????                    	.rsvd:   resw 1
    96                                  	.strucsize:
    97                                  endstruc 
    98                                  
    99                                  ; Retro UNIX 8086 v1 system call format:
   100                                  ; sys systemcall (ax) <arg1 (bx)>, <arg2 (cx)>, <arg3 (dx)>
   101                                  
   102                                  ;-----------------------------------------------------------------
   103                                  ;  code
   104                                  ;-----------------------------------------------------------------
   105                                  
   106                                  [BITS 16] ; 16-bit intructions (for 8086 or x86 real mode)
   107                                  
   108                                  [ORG 0] 
   109                                  
   110                                  START_CODE:
   111                                  	; 29/06/2022
   112                                  	; 26/06/2022 (16 bit version, pr0.s)
   113                                  	; 25/06/2022 (32 bit version, pr1.s)
   114 00000000 59                      	pop	cx ; cx = number of arguments
   115                                  	;
   116 00000001 58                      	pop	ax ; ax = argument 0 = executable file name
   117                                  	;
   118                                  	;mov	bp, program_msg
   119                                  	;
   120                                  	;dec	cx
   121 00000002 FEC9                    	dec	cl
   122 00000004 7E60                    	jng	short prn_0
   123                                  
   124 00000006 880E[8E05]              	mov	[argc], cl
   125                                  
   126                                  	sys	_open, lpt1, 1  ; open /dev/lpr for write
    69                              <1> 
    70                              <1>  %if %0 >= 2
    71 0000000A BB[2104]            <1>  mov bx, %2
    72                              <1>  %if %0 >= 3
    73 0000000D B90100              <1>  mov cx, %3
    74                              <1>  %if %0 >= 4
    75                              <1>  mov dx, %4
    76                              <1>  %endif
    77                              <1>  %endif
    78                              <1>  %endif
    79 00000010 B80500              <1>  mov ax, %1
    80 00000013 CD20                <1>  int 20h
   127 00000015 7309                    	jnc	short prn_1
   128                                  
   129 00000017 B8[5505]                	mov	ax, printer_err_msg
   130 0000001A E8B501                  	call	print_msg
   131 0000001D E98B00                  	jmp	hang	
   132                                  prn_1:
   133 00000020 A3[9A05]                	mov	[prnfnum], ax
   134                                  
   135                                  prn_2:
   136 00000023 5F                      	pop	di
   137                                  
   138 00000024 8A05                    	mov	al, [di]	
   139                                  
   140 00000026 3C2D                    	cmp	al, '-' ; option ?	
   141                                  	;jne	short prn_4
   142 00000028 7403                    	je	short case_l
   143 0000002A E98500                  	jmp	prn_4
   144                                  case_l:
   145 0000002D 47                      	inc	di
   146 0000002E 8A05                    	mov	al, [di]
   147                                  
   148 00000030 3C6C                    	cmp	al, 'l'
   149 00000032 7507                    	jne	short case_r 
   150 00000034 C606[8C05]4E            	mov	byte [rows], 78
   151 00000039 EB1E                    	jmp	short prn_3
   152                                  case_r:
   153 0000003B 3C72                    	cmp	al, 'r'
   154 0000003D 7507                    	jne	short case_m
   155 0000003F C606[8C05]42            	mov	byte [rows], 66
   156 00000044 EB13                    	jmp	short prn_3
   157                                  case_m:
   158 00000046 3C6D                    	cmp	al, 'm'
   159 00000048 7507                    	jne	short case_c
   160 0000004A C606[8D05]00            	mov	byte [cdatef], 0
   161 0000004F EB08                    	jmp	short prn_3
   162                                  case_c:
   163 00000051 3C63                    	cmp	al, 'c'
   164 00000053 75FC                    	jne	short case_c
   165                                  	;mov	byte [cdatef], 1
   166 00000055 FE06[8D05]              	inc	byte [cdatef]
   167                                  
   168                                  prn_3:
   169 00000059 FE0E[8E05]              	dec	byte [argc]
   170 0000005D 7FC4                    	jg	short prn_2
   171                                  
   172                                  	; print usage message on /dev/tty
   173 0000005F 803E[8F05]00            	cmp	byte [files], 0
   174 00000064 771E                    	ja	short fclose_exit
   175                                  prn_0:
   176                                  	; print usage message on stdout
   177                                  	sys	_write, 1, program_msg, size_pmsg
    69                              <1> 
    70                              <1>  %if %0 >= 2
    71 00000066 BB0100              <1>  mov bx, %2
    72                              <1>  %if %0 >= 3
    73 00000069 B9[2A04]            <1>  mov cx, %3
    74                              <1>  %if %0 >= 4
    75 0000006C BA4000              <1>  mov dx, %4
    76                              <1>  %endif
    77                              <1>  %endif
    78                              <1>  %endif
    79 0000006F B80400              <1>  mov ax, %1
    80 00000072 CD20                <1>  int 20h
   178                                  	;sys	_msg, program_msg, size_pmsg, 0Fh 
   179                                  
   180                                  	sys	_write, 1, usage_msg, size_umsg
    69                              <1> 
    70                              <1>  %if %0 >= 2
    71 00000074 BB0100              <1>  mov bx, %2
    72                              <1>  %if %0 >= 3
    73 00000077 B9[6B04]            <1>  mov cx, %3
    74                              <1>  %if %0 >= 4
    75 0000007A BAE900              <1>  mov dx, %4
    76                              <1>  %endif
    77                              <1>  %endif
    78                              <1>  %endif
    79 0000007D B80400              <1>  mov ax, %1
    80 00000080 CD20                <1>  int 20h
   181 00000082 EB27                    	jmp	short hang
   182                                  
   183                                  fclose_exit:
   184                                  	sys	_write, 1, nextline, 2
    69                              <1> 
    70                              <1>  %if %0 >= 2
    71 00000084 BB0100              <1>  mov bx, %2
    72                              <1>  %if %0 >= 3
    73 00000087 B9[5205]            <1>  mov cx, %3
    74                              <1>  %if %0 >= 4
    75 0000008A BA0200              <1>  mov dx, %4
    76                              <1>  %endif
    77                              <1>  %endif
    78                              <1>  %endif
    79 0000008D B80400              <1>  mov ax, %1
    80 00000090 CD20                <1>  int 20h
   185                                  
   186 00000092 803E[9C05]00            	cmp	byte [txtfnum], 0
   187 00000097 7609                    	jna	short pclose_exit
   188                                  p_err_exit:
   189                                  	sys	_close, [txtfnum]
    69                              <1> 
    70                              <1>  %if %0 >= 2
    71 00000099 8B1E[9C05]          <1>  mov bx, %2
    72                              <1>  %if %0 >= 3
    73                              <1>  mov cx, %3
    74                              <1>  %if %0 >= 4
    75                              <1>  mov dx, %4
    76                              <1>  %endif
    77                              <1>  %endif
    78                              <1>  %endif
    79 0000009D B80600              <1>  mov ax, %1
    80 000000A0 CD20                <1>  int 20h
   190                                  	;jmp	short pclose_exit
   191                                  
   192                                  pclose_exit:
   193                                  	sys	_close, [prnfnum]
    69                              <1> 
    70                              <1>  %if %0 >= 2
    71 000000A2 8B1E[9A05]          <1>  mov bx, %2
    72                              <1>  %if %0 >= 3
    73                              <1>  mov cx, %3
    74                              <1>  %if %0 >= 4
    75                              <1>  mov dx, %4
    76                              <1>  %endif
    77                              <1>  %endif
    78                              <1>  %endif
    79 000000A6 B80600              <1>  mov ax, %1
    80 000000A9 CD20                <1>  int 20h
   194                                  hang:
   195                                  	sys	_exit
    69                              <1> 
    70                              <1>  %if %0 >= 2
    71                              <1>  mov bx, %2
    72                              <1>  %if %0 >= 3
    73                              <1>  mov cx, %3
    74                              <1>  %if %0 >= 4
    75                              <1>  mov dx, %4
    76                              <1>  %endif
    77                              <1>  %endif
    78                              <1>  %endif
    79 000000AB B80100              <1>  mov ax, %1
    80 000000AE CD20                <1>  int 20h
   196 000000B0 EBF9                    	jmp	short hang
   197                                  
   198                                  prn_4:
   199 000000B2 FE06[8F05]              	inc	byte [files]
   200                                  
   201                                  	; di = txt file name address
   202                                  
   203                                  	sys	_open, di, 0 ; open for read
    69                              <1> 
    70                              <1>  %if %0 >= 2
    71 000000B6 89FB                <1>  mov bx, %2
    72                              <1>  %if %0 >= 3
    73 000000B8 B90000              <1>  mov cx, %3
    74                              <1>  %if %0 >= 4
    75                              <1>  mov dx, %4
    76                              <1>  %endif
    77                              <1>  %endif
    78                              <1>  %endif
    79 000000BB B80500              <1>  mov ax, %1
    80 000000BE CD20                <1>  int 20h
   204 000000C0 7308                    	jnc	short prn_5
   205                                  
   206                                  f_err_exit:
   207 000000C2 B8[6905]                	mov	ax, file_err_msg
   208 000000C5 E80A01                  	call	print_msg
   209 000000C8 EB8F                    	jmp	prn_3
   210                                  
   211                                  prn_5:
   212 000000CA A3[9C05]                	mov	[txtfnum], ax
   213                                  
   214 000000CD F606[8D05]FF            	test	byte [cdatef], 0FFh
   215 000000D2 7407                    	jz	short prn_6
   216                                  	sys	_time
    69                              <1> 
    70                              <1>  %if %0 >= 2
    71                              <1>  mov bx, %2
    72                              <1>  %if %0 >= 3
    73                              <1>  mov cx, %3
    74                              <1>  %if %0 >= 4
    75                              <1>  mov dx, %4
    76                              <1>  %endif
    77                              <1>  %endif
    78                              <1>  %endif
    79 000000D4 B80D00              <1>  mov ax, %1
    80 000000D7 CD20                <1>  int 20h
   217 000000D9 EB11                    	jmp	short prn_7
   218                                  prn_6:
   219                                  	sys	_fstat, ax, stbuf
    69                              <1> 
    70                              <1>  %if %0 >= 2
    71 000000DB 89C3                <1>  mov bx, %2
    72                              <1>  %if %0 >= 3
    73 000000DD B9[2206]            <1>  mov cx, %3
    74                              <1>  %if %0 >= 4
    75                              <1>  mov dx, %4
    76                              <1>  %endif
    77                              <1>  %endif
    78                              <1>  %endif
    79 000000E0 B81C00              <1>  mov ax, %1
    80 000000E3 CD20                <1>  int 20h
   220                                  	; 26/06/2022
   221 000000E5 A1[3E06]                	mov	ax, [stbuf+stat.mtime]
   222 000000E8 8B16[4006]              	mov	dx, [stbuf+stat.mtime+2]
   223                                  prn_7:
   224 000000EC A3[9605]                	mov	[mtime], ax
   225 000000EF 8916[9805]              	mov	[mtime+2], dx
   226                                  
   227                                  write_pages:
   228 000000F3 31C0                    	xor	ax, ax ; 0
   229 000000F5 A3[9005]                	mov	[pgnumber], ax
   230 000000F8 A2[9205]                	mov	[eof], al
   231 000000FB A2[9305]                	mov	[cchar], al	
   232                                  write_next_page:	
   233 000000FE E80C01                  	call	readf
   234 00000101 731C                    	jnc	short prn_8
   235                                  
   236                                  	sys	_close, [txtfnum]
    69                              <1> 
    70                              <1>  %if %0 >= 2
    71 00000103 8B1E[9C05]          <1>  mov bx, %2
    72                              <1>  %if %0 >= 3
    73                              <1>  mov cx, %3
    74                              <1>  %if %0 >= 4
    75                              <1>  mov dx, %4
    76                              <1>  %endif
    77                              <1>  %endif
    78                              <1>  %endif
    79 00000107 B80600              <1>  mov ax, %1
    80 0000010A CD20                <1>  int 20h
   237                                  
   238 0000010C FE0E[8E05]              	dec	byte [argc]
   239                                  	;jng	short pclose_exit
   240 00000110 7F02                    	jg	short p_next_file
   241 00000112 EB8E                    	jmp	pclose_exit
   242                                  
   243                                  p_next_file:
   244 00000114 29C0                    	sub	ax, ax
   245                                  
   246 00000116 A2[9C05]                	mov	[txtfnum], al ; 0 ; open file number
   247                                  	;mov	[fbuf], ax ; 0	  ; open file number
   248                                  	; 26/06/2022
   249 00000119 A3[9E05]                	mov	[fbuf+2], ax ; 0 ; character count
   250                                  
   251 0000011C E904FF                  	jmp	prn_2
   252                                  
   253                                  prn_8:
   254                                  	sys	_write, [prnfnum], EmptyLines, 4 ;  2 rows
    69                              <1> 
    70                              <1>  %if %0 >= 2
    71 0000011F 8B1E[9A05]          <1>  mov bx, %2
    72                              <1>  %if %0 >= 3
    73 00000123 B9[7A05]            <1>  mov cx, %3
    74                              <1>  %if %0 >= 4
    75 00000126 BA0400              <1>  mov dx, %4
    76                              <1>  %endif
    77                              <1>  %endif
    78                              <1>  %endif
    79 00000129 B80400              <1>  mov ax, %1
    80 0000012C CD20                <1>  int 20h
   255 0000012E 723F                    	jc	short prn_err
   256                                  
   257                                  	; 26/06/2022
   258 00000130 A1[9605]                	mov	ax, [mtime]
   259 00000133 8B16[9805]              	mov	dx, [mtime+2]
   260 00000137 57                      	push	di
   261 00000138 E84301                  	call	ctime
   262 0000013B 5F                      	pop	di
   263                                  	; cbuf = date&time string (26 bytes)
   264                                  	
   265                                  	sys	_write, [prnfnum], cbuf, 26
    69                              <1> 
    70                              <1>  %if %0 >= 2
    71 0000013C 8B1E[9A05]          <1>  mov bx, %2
    72                              <1>  %if %0 >= 3
    73 00000140 B9[0604]            <1>  mov cx, %3
    74                              <1>  %if %0 >= 4
    75 00000143 BA1A00              <1>  mov dx, %4
    76                              <1>  %endif
    77                              <1>  %endif
    78                              <1>  %endif
    79 00000146 B80400              <1>  mov ax, %1
    80 00000149 CD20                <1>  int 20h
   266 0000014B 7222                    	jc	short prn_err
   267                                  	
   268                                  	sys	_write, [prnfnum], PageHeader-2, 2
    69                              <1> 
    70                              <1>  %if %0 >= 2
    71 0000014D 8B1E[9A05]          <1>  mov bx, %2
    72                              <1>  %if %0 >= 3
    73 00000151 B9[8405]            <1>  mov cx, %3
    74                              <1>  %if %0 >= 4
    75 00000154 BA0200              <1>  mov dx, %4
    76                              <1>  %endif
    77                              <1>  %endif
    78                              <1>  %endif
    79 00000157 B80400              <1>  mov ax, %1
    80 0000015A CD20                <1>  int 20h
   269 0000015C 7211                    	jc	short prn_err
   270                                  
   271 0000015E FF06[9005]              	inc	word [pgnumber]
   272                                  
   273 00000162 89FE                    	mov	si, di ; file name address (on stack)
   274                                  
   275 00000164 31D2                    	xor	dx, dx
   276                                  prn_9:	
   277 00000166 AC                      	lodsb
   278 00000167 08C0                    	or	al, al
   279 00000169 740D                    	jz	short prn_10
   280 0000016B FEC2                    	inc	dl
   281 0000016D EBF7                    	jmp	short prn_9
   282                                  
   283                                  prn_err:
   284 0000016F B8[5505]                	mov	ax, printer_err_msg
   285 00000172 E85D00                  	call	print_msg	
   286 00000175 E921FF                  	jmp	p_err_exit
   287                                  
   288                                  prn_10:
   289 00000178 89F9                    	mov	cx, di
   290                                  	;sys	_write, [prnfnum], di, dx
   291                                  	sys	_write
    69                              <1> 
    70                              <1>  %if %0 >= 2
    71                              <1>  mov bx, %2
    72                              <1>  %if %0 >= 3
    73                              <1>  mov cx, %3
    74                              <1>  %if %0 >= 4
    75                              <1>  mov dx, %4
    76                              <1>  %endif
    77                              <1>  %endif
    78                              <1>  %endif
    79 0000017A B80400              <1>  mov ax, %1
    80 0000017D CD20                <1>  int 20h
   292 0000017F 72EE                    	jc	short prn_err
   293                                  
   294 00000181 B9[8605]                	mov	cx, PageHeader
   295 00000184 B206                    	mov	dl, 6
   296                                  	;sys	_write, [prnfnum], PageHeader, dx
   297                                  	sys	_write
    69                              <1> 
    70                              <1>  %if %0 >= 2
    71                              <1>  mov bx, %2
    72                              <1>  %if %0 >= 3
    73                              <1>  mov cx, %3
    74                              <1>  %if %0 >= 4
    75                              <1>  mov dx, %4
    76                              <1>  %endif
    77                              <1>  %endif
    78                              <1>  %endif
    79 00000186 B80400              <1>  mov ax, %1
    80 00000189 CD20                <1>  int 20h
   298 0000018B 72E2                    	jc	short prn_err
   299                                  
   300 0000018D A1[9005]                	mov	ax, [pgnumber]
   301 00000190 31D2                    	xor	dx, dx ; 29/06/2022
   302 00000192 E88700                  	call	write_pg_num
   303 00000195 72D8                    	jc	short prn_err	
   304                                  
   305                                  	; 26/06/2022
   306                                  	sys	_write, [prnfnum], EmptyLines, 8 ; 4 rows
    69                              <1> 
    70                              <1>  %if %0 >= 2
    71 00000197 8B1E[9A05]          <1>  mov bx, %2
    72                              <1>  %if %0 >= 3
    73 0000019B B9[7A05]            <1>  mov cx, %3
    74                              <1>  %if %0 >= 4
    75 0000019E BA0800              <1>  mov dx, %4
    76                              <1>  %endif
    77                              <1>  %endif
    78                              <1>  %endif
    79 000001A1 B80400              <1>  mov ax, %1
    80 000001A4 CD20                <1>  int 20h
   307 000001A6 72C7                    	jc	short prn_err
   308                                  
   309 000001A8 8A16[8C05]              	mov	dl, [rows]
   310 000001AC 80EA0B                  	sub	dl, 11
   311 000001AF 89D5                    	mov	bp, dx
   312                                  
   313                                  write_next_char:
   314                                  prn_11:
   315 000001B1 E83600                  	call	getchar
   316 000001B4 E87A00                  	call	writechar
   317 000001B7 3C0A                    	cmp	al, 10 ; lf character, nextline
   318 000001B9 75F6                    	jne	short prn_11
   319 000001BB 4D                      	dec	bp
   320 000001BC 75F3                    	jnz	short prn_11
   321                                  	
   322                                  	sys	_write, [prnfnum], EmptyLines, 10 ; 5 rows
    69                              <1> 
    70                              <1>  %if %0 >= 2
    71 000001BE 8B1E[9A05]          <1>  mov bx, %2
    72                              <1>  %if %0 >= 3
    73 000001C2 B9[7A05]            <1>  mov cx, %3
    74                              <1>  %if %0 >= 4
    75 000001C5 BA0A00              <1>  mov dx, %4
    76                              <1>  %endif
    77                              <1>  %endif
    78                              <1>  %endif
    79 000001C8 B80400              <1>  mov ax, %1
    80 000001CB CD20                <1>  int 20h
   323 000001CD 72A0                    	jc	short prn_err
   324                                  prn_12:
   325 000001CF E92CFF                  	jmp	write_next_page
   326                                  
   327                                  ;-----------------------------------------------------------------
   328                                  ; 29/06/2022
   329                                  
   330                                  print_msg:
   331                                  	; ax = asciiz string address
   332 000001D2 89C7                    	mov	di, ax
   333 000001D4 4F                      	dec	di
   334                                  nextchr:
   335 000001D5 47                      	inc	di
   336 000001D6 803D00                  	cmp	byte [di], 0
   337 000001D9 77FA                    	ja	short nextchr
   338                                  	;cmp	[di], 0Dh
   339                                  	;ja	short nextchr
   340 000001DB 29C7                    	sub	di, ax
   341                                  	; di = asciiz string length
   342                                  	;
   343                                  	sys	_write, 1, ax, di
    69                              <1> 
    70                              <1>  %if %0 >= 2
    71 000001DD BB0100              <1>  mov bx, %2
    72                              <1>  %if %0 >= 3
    73 000001E0 89C1                <1>  mov cx, %3
    74                              <1>  %if %0 >= 4
    75 000001E2 89FA                <1>  mov dx, %4
    76                              <1>  %endif
    77                              <1>  %endif
    78                              <1>  %endif
    79 000001E4 B80400              <1>  mov ax, %1
    80 000001E7 CD20                <1>  int 20h
   344 000001E9 C3                      	retn
   345                                  
   346                                  ; 25/06/2022
   347                                  ;-----------------------------------------------------------------
   348                                  
   349                                  getchar:
   350 000001EA A0[9305]                	mov	al, [cchar]
   351 000001ED 08C0                    	or	al, al
   352 000001EF 7406                    	jz	short getchar_1
   353 000001F1 C606[9305]00            	mov	byte [cchar], 0
   354 000001F6 C3                      	retn
   355                                  getchar_1:
   356 000001F7 F606[9205]FF            	test	byte [eof], 0FFh
   357 000001FC 7403                    	jz	short getchar_2
   358 000001FE B00A                    	mov	al, 10 ; lf, nextline
   359 00000200 C3                      	retn
   360                                  getchar_2:
   361 00000201 E84300                  	call	getc
   362 00000204 7306                    	jnc	short getchar_ok
   363 00000206 FE06[9205]              	inc	byte [eof]
   364 0000020A EBDE                    	jmp	short getchar
   365                                  getchar_ok:
   366                                  readf_ok:
   367 0000020C C3                      	retn
   368                                  
   369                                  ; 25/06/2022
   370                                  ;-----------------------------------------------------------------
   371                                  
   372                                  readf:
   373 0000020D E8DAFF                  	call	getchar
   374 00000210 A2[9305]                	mov	[cchar], al
   375 00000213 F606[9205]FF            	test	byte [eof], 0FFh
   376 00000218 74F2                    	jz	short readf_ok
   377                                  readf_err:
   378 0000021A F9                      	stc
   379 0000021B C3                      	retn
   380                                  
   381                                  ; 26/06/2022
   382                                  ;-----------------------------------------------------------------
   383                                  
   384                                  write_pg_num:
   385                                  	; ax = page number
   386 0000021C B90A00                  	mov	cx, 10
   387                                  w_pnum_1:
   388                                  	; dx:ax = 32 bit dividend
   389                                  	; cx = 16 bit divisor
   390                                  
   391 0000021F E84B01                  	call	div32  ; in 'ctime.s'
   392                                  
   393                                  	; dx:ax = 32 bit quotient
   394                                  	; bx = 16 bit remainder
   395                                  
   396 00000222 53                      	push	bx
   397 00000223 21D2                    	and	dx, dx
   398 00000225 7504                    	jnz	short w_pnum_2
   399 00000227 21C0                    	and	ax, ax
   400 00000229 7403                    	jz	short w_pnum_3
   401                                  w_pnum_2:
   402 0000022B E8EEFF                  	call	write_pg_num
   403                                  w_pnum_3:	
   404 0000022E 58                      	pop	ax
   405 0000022F 0430                    	add	al, '0'
   406                                  writechar:
   407 00000231 A2[9405]                	mov	[chr], al
   408                                  	sys	_write, [prnfnum], chr, 1
    69                              <1> 
    70                              <1>  %if %0 >= 2
    71 00000234 8B1E[9A05]          <1>  mov bx, %2
    72                              <1>  %if %0 >= 3
    73 00000238 B9[9405]            <1>  mov cx, %3
    74                              <1>  %if %0 >= 4
    75 0000023B BA0100              <1>  mov dx, %4
    76                              <1>  %endif
    77                              <1>  %endif
    78                              <1>  %endif
    79 0000023E B80400              <1>  mov ax, %1
    80 00000241 CD20                <1>  int 20h
   409 00000243 A0[9405]                	mov	al, [chr]
   410 00000246 C3                      	retn		
   411                                  	
   412                                  ; 25/06/2022
   413                                  ;-----------------------------------------------------------------
   414                                  ; get characters from input file
   415                                  
   416                                  getc:
   417 00000247 A1[9E05]                	mov	ax, [fbuf+2] ; character count
   418 0000024A 21C0                    	and	ax, ax
   419 0000024C 751A                    	jnz	short gch1
   420                                  gch0:
   421 0000024E 8B1E[9C05]              	mov	bx, [fbuf] ; file descriptor/number
   422 00000252 B9[A205]                	mov	cx, fbuf + 6 ; read buffer address
   423 00000255 890E[A005]              	mov 	[fbuf+4], cx ; character offset
   424 00000259 29D2                    	sub	dx, dx
   425 0000025B B280                    	mov	dl, 128
   426                                  	sys	_read ; sys _read, bx, cx, dx
    69                              <1> 
    70                              <1>  %if %0 >= 2
    71                              <1>  mov bx, %2
    72                              <1>  %if %0 >= 3
    73                              <1>  mov cx, %3
    74                              <1>  %if %0 >= 4
    75                              <1>  mov dx, %4
    76                              <1>  %endif
    77                              <1>  %endif
    78                              <1>  %endif
    79 0000025D B80300              <1>  mov ax, %1
    80 00000260 CD20                <1>  int 20h
   427 00000262 7216                    	jc	short gch2
   428 00000264 09C0                    	or	ax, ax
   429 00000266 7414                    	jz	short gch3
   430                                  gch1:
   431 00000268 48                      	dec	ax
   432 00000269 A3[9E05]                	mov	[fbuf+2], ax ; character count in buffer
   433 0000026C 8B1E[A005]              	mov	bx, [fbuf+4] ; current character offset
   434 00000270 30E4                    	xor	ah, ah
   435 00000272 8A07                    	mov	al, [bx]
   436 00000274 43                      	inc	bx
   437 00000275 891E[A005]              	mov	[fbuf+4], bx ; next character offset
   438 00000279 C3                      	retn 	
   439                                  gch2:
   440 0000027A 31C0                    	xor	ax, ax
   441                                  gch3:
   442 0000027C F9                      	stc
   443 0000027D C3                      	retn
   444                                  
   445                                  ; 26/06/2022
   446                                  ;=================================================================
   447                                  %include 'ctime.s'
   448                              <1> ; ****************************************************************************
   449                              <1> ;
   450                              <1> ; CTIME.INC  (Retro Unix 8086 v1 - /bin/ls - list file or directory)
   451                              <1> ; ----------------------------------------------------------------------------
   452                              <1> ;
   453                              <1> ; RETRO UNIX 8086 (Retro Unix == Turkish Rational Unix)
   454                              <1> ; Operating System Project (v0.1) by ERDOGAN TAN (Beginning: 11/07/2012) 
   455                              <1> ; Retro UNIX 8086 v1 - /bin/ls file
   456                              <1> ;
   457                              <1> ; [ Last Modification: 02/06/2022 ]
   458                              <1> ;
   459                              <1> ; Derivation from UNIX Operating System (v1.0 for PDP-11) 
   460                              <1> ; (Original) Source Code by Ken Thompson (Bell Laboratories, 1971-1972)
   461                              <1> ;
   462                              <1> ; ****************************************************************************
   463                              <1> ;
   464                              <1> ; Derived from 'ctime.c' file of original UNIX v5 (usr/source/s3/ctime.c)
   465                              <1> ;
   466                              <1> ; LS0.ASM, 19/11/2013 - 24/11/2013
   467                              <1> ; include ctime.inc
   468                              <1> ;
   469                              <1> ; ****************************************************************************
   470                              <1> ; ctime1.s (02/06/2022 NASM version of 'ctime1.asm') -NASM 2.15- 
   471                              <1> ; ctime1.asm (26/02/2022) -MASM 6.14-
   472                              <1> ; ctime0.asm (28/11/2013)
   473                              <1> 
   474                              <1> ; .8086
   475                              <1> 
   476                              <1> ;timezone equ 5*60*60
   477                              <1> 
   478                              <1> 
   479                              <1> ctime:  ; ctime(at)
   480                              <1> 	; int *at;
   481                              <1> 	; {
   482                              <1> 	; 	return(asctime(localtime(at)));
   483                              <1> 	; }
   484                              <1> 
   485                              <1> 	; DX:AX = unix epoch time (in seconds)
   486                              <1> 
   487                              <1> 	;call	localtime
   488                              <1> 	;call	asctime
   489                              <1> 
   490                              <1> 	;retn
   491                              <1>   
   492                              <1> localtime:
   493                              <1> 	; localtime(tim)
   494                              <1> 	; int tim[];
   495                              <1> 	; 	{
   496                              <1> 	;	register int *t, *ct, dayno;
   497                              <1> 	;	int daylbegin, daylend;
   498                              <1> 	;	int copyt[2];
   499                              <1> 	;	t = copyt;
   500                              <1> 	;	t[0] = tim[0];
   501                              <1> 	;	t[1] = tim[1];
   502                              <1> 	;	dpadd(t, -timezone);
   503                              <1> 	;	ct = gmtime(t);
   504                              <1> 	;	dayno = ct[YDAY];
   505                              <1> 	;	if (nixonflg && (ct[YEAR]>74 || ct[YEAR]==74 && (dayno > 5 ||
   506                              <1> 	;	    dayno==5 && ct[HOUR]>=2))) {
   507                              <1> 	;		daylight =| 1;
   508                              <1> 	;		daylbegin = -1;
   509                              <1> 	;		daylend = 367;
   510                              <1> 	;	} else {
   511                              <1> 	;		daylbegin = sunday(ct, 119);	/* last Sun in Apr */
   512                              <1> 	;		daylend = sunday(ct, 303);	/* last Sun in Oct */
   513                              <1> 	;	}
   514                              <1> 	;	if (daylight &&
   515                              <1> 	;	    (dayno>daylbegin || (dayno==daylbegin && ct[HOUR]>=2)) &&
   516                              <1> 	;	    (dayno<daylend || (dayno==daylend && ct[HOUR]<1))) {
   517                              <1> 	;		dpadd(t, 1*60*60);
   518                              <1> 	;		ct = gmtime(t);
   519                              <1> 	;		ct[ISDAY]++;
   520                              <1> 	;	}
   521                              <1> 	;	return(ct);
   522                              <1> 	;	}
   523                              <1> 
   524                              <1> 	;sub	ax, timezone	
   525                              <1> 	;sbb	dx, 0
   526                              <1> 	
   527                              <1> 	;push	dx
   528                              <1> 	;push	ax
   529                              <1> 
   530 0000027E E85D00              <1> 	call	gmtime
   531                              <1> 
   532                              <1> ; if (nixonflg && (ct[YEAR]>74 || ct[YEAR]==74 && (dayno > 5 ||
   533                              <1> ;     dayno==5 && ct[HOUR]>=2))) {
   534                              <1> 	;cmp	byte [nixonflg], 0
   535                              <1> 	;jna	short lt1
   536                              <1> 	;cmp	word [year], 1974
   537                              <1> 	;jb	short lt1
   538                              <1> 	;ja	short lt0
   539                              <1> 	;cmp	word [yday], 5
   540                              <1> 	;jb	short lt1
   541                              <1> 	;ja	short lt0 
   542                              <1> 	;cmp	word [hour], 2
   543                              <1> 	;jb	short lt1
   544                              <1> ; nixonflag > 0
   545                              <1> ;lt0:
   546                              <1> 	;mov	word [daylight], 1
   547                              <1> 	;mov	word [daylbegin], -1
   548                              <1> 	;mov	word [daylend], 367
   549                              <1> ;	;jmp	short lt2
   550                              <1> 
   551                              <1> ; } else {
   552                              <1> ;lt1:
   553                              <1> ;	mov	cx, 119
   554                              <1> ;	call	sunday ; sunday(ct, 119); /* last Sun in Apr */
   555                              <1> ;	mov	word [daylbegin], cx
   556                              <1> ;	mov	cx, 303
   557                              <1> ;	call	sunday ; sunday(ct, 303); /* last Sun in Oct */	
   558                              <1> ;	mov	word [daylend], cx
   559                              <1> ;lt2:
   560                              <1> ; if (daylight &&
   561                              <1> ;    (dayno>daylbegin || (dayno==daylbegin && ct[HOUR]>=2)) &&
   562                              <1> ;    (dayno<daylend || (dayno==daylend && ct[HOUR]<1))) {
   563                              <1> 
   564                              <1> ;	pop	ax
   565                              <1> ;	pop	dx
   566                              <1> 
   567                              <1> 	;cmp	byte [daylight], 0
   568                              <1> 	;jna	short lt5
   569                              <1> 	
   570                              <1> 	;mov	cx, word [yday]
   571                              <1> 
   572                              <1> 	;cmp	cx, word [daylbegin]
   573                              <1> 	;jb	short lt5
   574                              <1> 	;ja	short lt3
   575                              <1> 	;cmp	word [hour], 2
   576                              <1> 	;jb	short lt5
   577                              <1> 	;jmp	short lt4
   578                              <1> ;lt3:
   579                              <1> 	;cmp	cx, word [daylend]
   580                              <1> 	;jb	short lt4
   581                              <1> 	;ja	short lt5
   582                              <1> 	;cmp	word [hour], 1
   583                              <1> 	;jnb	short lt5
   584                              <1> ;lt4:
   585                              <1> 	;add	ax, 1*60*60
   586                              <1> 	;adc	dx, 0
   587                              <1> 	;call	gmtime
   588                              <1> 	;inc	word [isday]
   589                              <1> ;lt5:
   590                              <1> ;	}
   591                              <1> ;	return(ct);
   592                              <1> ;	}
   593                              <1> 
   594                              <1> 	;retn
   595                              <1> 
   596                              <1> 	; 26/02/2022 (Retro UNIX 8086 v1, 2022 modification)
   597                              <1> asctime:
   598                              <1> 	; asctime(t)
   599                              <1> 	;int *t;
   600                              <1> 	;{
   601                              <1> 	;	register char *cp, *ncp;
   602                              <1> 	;	register int *tp;
   603                              <1> 	;
   604                              <1> 	;	cp = cbuf;
   605                              <1> 	;	for (ncp = "Day Mon 00 00:00:00 1900\n"; *cp++ = *ncp++;);
   606                              <1> 	;	ncp = &"SunMonTueWedThuFriSat"[3*t[6]];
   607                              <1> 	;	cp = cbuf;
   608                              <1> 	;	*cp++ = *ncp++;
   609                              <1> 	;	*cp++ = *ncp++;
   610                              <1> 	;	*cp++ = *ncp++;
   611                              <1> 	;	cp++;
   612                              <1> 	;	tp = &t[4];
   613                              <1> 	;	ncp = &"JanFebMarAprMayJunJulAugSepOctNovDec"[(*tp)*3];
   614                              <1> 	;	*cp++ = *ncp++;
   615                              <1> 	;	*cp++ = *ncp++;
   616                              <1> 	;	*cp++ = *ncp++;
   617                              <1> 	;	cp = numb(cp, *--tp);
   618                              <1> 	;	cp = numb(cp, *--tp+100);
   619                              <1> 	;	cp = numb(cp, *--tp+100);
   620                              <1> 	;	cp = numb(cp, *--tp+100);
   621                              <1> 	;	cp =+ 2;
   622                              <1> 	;	cp = numb(cp, t[YEAR]);
   623                              <1> 	;	return(cbuf);
   624                              <1> 	;}
   625                              <1> 	
   626                              <1> 	;;mov	di, cbuf
   627                              <1> 	;;mov	si, ncp0
   628                              <1> 	;;mov	cx, 13
   629                              <1> 	;;movsw	
   630                              <1> 	;
   631 00000281 BF[0604]            <1> 	mov	di, cbuf	
   632                              <1> 	;mov	si, word [wday]
   633                              <1> 	;shl	si, 1
   634                              <1> 	;shl	si, 1
   635                              <1> 	;add	si, ncp1
   636                              <1> 	;movsw
   637                              <1> 	;movsw
   638 00000284 8B36[9C03]          <1> 	mov	si, word [month]
   639 00000288 D1E6                <1> 	shl	si, 1
   640 0000028A D1E6                <1> 	shl	si, 1
   641 0000028C 81C6[D203]          <1> 	add	si, ncp2 - 4
   642 00000290 A5                  <1> 	movsw
   643 00000291 A5                  <1> 	movsw
   644 00000292 A1[9A03]            <1> 	mov	ax, word [day]
   645                              <1> 	;mov	cx, 10
   646 00000295 B10A                <1> 	mov	cl, 10
   647 00000297 E8E200              <1> 	call	numb
   648 0000029A B020                <1>  	mov	al, 20h
   649 0000029C AA                  <1> 	stosb
   650                              <1> 	;
   651 0000029D A1[9E03]            <1> 	mov	ax, word [year]
   652 000002A0 B564                <1> 	mov	ch, 100
   653 000002A2 F6F5                <1> 	div	ch
   654 000002A4 50                  <1> 	push	ax ;
   655 000002A5 98                  <1> 	cbw	; century (19, 20)
   656 000002A6 E8D300              <1> 	call	numb
   657 000002A9 58                  <1> 	pop	ax
   658 000002AA 88E0                <1> 	mov	al, ah
   659 000002AC 98                  <1> 	cbw	; year (0 to 99)
   660 000002AD E8CC00              <1> 	call	numb
   661 000002B0 B020                <1> 	mov	al, 20h
   662 000002B2 AA                  <1> 	stosb
   663                              <1> 	;
   664 000002B3 8B36[A003]          <1> 	mov	si, word [wday]
   665 000002B7 D1E6                <1> 	shl	si, 1
   666 000002B9 D1E6                <1> 	shl	si, 1
   667 000002BB 81C6[BA03]          <1> 	add	si, ncp1
   668 000002BF A5                  <1> 	movsw
   669 000002C0 A5                  <1> 	movsw
   670                              <1> 	;
   671 000002C1 A1[9803]            <1> 	mov	ax, word [hour]
   672 000002C4 E8B500              <1> 	call	numb
   673 000002C7 B03A                <1>  	mov	al, ':'
   674 000002C9 AA                  <1> 	stosb
   675 000002CA A1[9603]            <1> 	mov	ax, word [minute]
   676 000002CD E8AC00              <1> 	call	numb
   677 000002D0 B03A                <1>  	mov	al, ':'
   678 000002D2 AA                  <1> 	stosb
   679 000002D3 A1[9403]            <1> 	mov	ax, word [second]
   680 000002D6 E8A300              <1> 	call	numb
   681 000002D9 B020                <1>  	mov	al, 20h
   682 000002DB AA                  <1> 	stosb
   683                              <1> 	;mov	ax, word [year]
   684                              <1> 	;mov	ch, 100
   685                              <1> 	;div	ch
   686                              <1> 	;push	ax ;
   687                              <1> 	;cbw	; century (19, 20)
   688                              <1> 	;call	numb
   689                              <1> 	;pop	ax
   690                              <1> 	;mov	al, ah
   691                              <1> 	;cbw	; year (0 to 99)
   692                              <1> 	;call	numb
   693                              <1> 	;mov	al, 20h
   694                              <1> 	;stosb
   695                              <1> 	;xor	al, al
   696                              <1> 	;stosb
   697                              <1> 
   698                              <1> 	; 26/02/2022
   699 000002DC AA                  <1> 	stosb
   700                              <1> 
   701 000002DD C3                  <1> 	retn
   702                              <1> 
   703                              <1> gmtime:
   704                              <1> 	; 24/11/2013 (yday, wday)
   705                              <1> 	; Retro UNIX 8086 v1 - UNIX.ASM (20/06/2013)
   706                              <1> 	; Retro UNIX 8086 v1 feature/procedure only!
   707                              <1> 	; 'convert_from_epoch' procedure prototype: 
   708                              <1> 	; 	            UNIXCOPY.ASM, 10/03/2013
   709                              <1> 	; 30/11/2012
   710                              <1> 	; Derived from DALLAS Semiconductor
   711                              <1> 	; Application Note 31 (DS1602/DS1603)
   712                              <1> 	; 6 May 1998
   713                              <1> 	;
   714                              <1> 	; INPUT:
   715                              <1> 	; DX:AX = Unix (Epoch) Time
   716                              <1> 	;
   717                              <1> 	; ((Modified registers: AX, DX, CX, BX))  
   718                              <1> 	;
   719 000002DE B93C00              <1> 	mov	cx, 60
   720 000002E1 E88900              <1> 	call	div32
   721                              <1> 	;mov	word [imin], ax	  ; whole minutes
   722                              <1> 	;mov	word [imin]+2, dx ; since 1/1/1970
   723 000002E4 891E[9403]          <1> 	mov	word [second], bx ; leftover seconds
   724                              <1> 	;mov	cx, 60
   725 000002E8 E88200              <1> 	call	div32
   726                              <1> 	;mov	word [ihrs], ax   ; whole hours
   727                              <1> 	;mov	word [ihrs]+2, dx ; since 1/1/1970
   728 000002EB 891E[9603]          <1> 	mov	word [minute], bx ; leftover minutes
   729                              <1> 	;mov	cx, 24
   730 000002EF B118                <1> 	mov	cl, 24
   731 000002F1 E87900              <1> 	call	div32
   732                              <1> 	;mov	word [iday], ax	  ; whole days
   733                              <1> 				  ; since 1/1/1970
   734 000002F4 A3[A003]            <1> 	mov	word [wday], ax	  ; 24/11/2013	
   735                              <1> 	;mov	word [iday]+2, dx ; DX = 0
   736 000002F7 891E[9803]          <1> 	mov	word [hour], bx   ; leftover hours
   737 000002FB 05DB02              <1> 	add	ax, 365+366	  ; whole day since
   738                              <1> 				  ; 1/1/1968 	
   739                              <1> 	;adc	dx, 0	          ; DX = 0
   740                              <1> 	;mov	word [iday], ax
   741 000002FE 50                  <1> 	push	ax
   742 000002FF B9B505              <1> 	mov	cx, (4*365)+1	  ; 4 years = 1461 days
   743 00000302 E86800              <1> 	call	div32
   744 00000305 59                  <1> 	pop	cx
   745                              <1> 	;mov	word [lday], ax	  ; count of quadyrs (4 years)
   746 00000306 53                  <1> 	push	bx
   747                              <1> 	;mov	word [qday], bx	  ;  days since quadyr began
   748 00000307 83FB3C              <1> 	cmp	bx, 31 + 29	  ; if past feb 29 then
   749 0000030A F5                  <1> 	cmc			  ; add	this quadyr's leap day
   750 0000030B 83D000              <1> 	adc	ax, 0		  ; to # of qadyrs (leap days)
   751                              <1> 	;mov	word [lday], ax	; since 1968			  
   752                              <1> 	;mov	cx, word [iday]
   753 0000030E 91                  <1> 	xchg	cx, ax		  ; CX = lday, AX = iday		  
   754 0000030F 29C8                <1> 	sub	ax, cx		  ; iday - lday
   755 00000311 B96D01              <1> 	mov	cx, 365
   756                              <1> 	;xor	dx, dx		  ; DX  = 0
   757                              <1> 	; AX = iday-lday, DX = 0
   758 00000314 E85600              <1> 	call	div32
   759                              <1> 	;mov	word [iyrs], ax   ; whole years since 1968
   760                              <1> 	; jday = iday - (iyrs*365) - lday
   761                              <1> 	;mov	word [jday], bx	  ; days since 1/1 of current year
   762 00000317 05B007              <1> 	add	ax, 1968	  ; compute year
   763 0000031A A3[9E03]            <1> 	mov	word [year], ax
   764 0000031D 89C2                <1> 	mov	dx, ax		
   765                              <1> 	;mov	ax, word [qday]
   766 0000031F 58                  <1> 	pop ax
   767 00000320 3D6D01              <1> 	cmp	ax, 365		  ; if qday <= 365 and qday >= 60	
   768 00000323 7707                <1> 	ja	short gmt_1	  ; jday = jday +1
   769 00000325 83F83C              <1> 	cmp	ax, 60	          ; if past 2/29 and leap year then
   770 00000328 F5                  <1>         cmc			  ; add	a leap day to the # of whole
   771 00000329 83D300              <1> 	adc	bx, 0		  ; days since 1/1 of current year
   772                              <1> gmt_1:
   773                              <1> 	;mov	word [jday], bx
   774                              <1> 	;mov	word [yday], bx	; 24/11/2013	
   775 0000032C B90C00              <1> 	mov	cx, 12		  ; estimate month
   776 0000032F 87CB                <1> 	xchg	cx, bx		  ; CX = jday, BX = month 	
   777 00000331 B86E01              <1> 	mov	ax, 366		  ; mday, max. days since 1/1 is 365
   778 00000334 83E203              <1> 	and	dx, 11b		  ; year mod 4 (and dx, 3) 
   779                              <1> gmt_2:	; Month calculation	  ; 0 to 11 (11 to 0)	
   780 00000337 39C1                <1> 	cmp	cx, ax		  ; mday = # of days passed from 1/1
   781 00000339 7315                <1> 	jnb	short gmt_3
   782 0000033B 4B                  <1> 	dec	bx		  ; month = month - 1
   783 0000033C D1E3                <1> 	shl	bx, 1 
   784 0000033E 8B87[A203]          <1> 	mov	ax, word DMonth[BX] ; # elapsed days at 1st of month
   785 00000342 D1EB                <1> 	shr	bx, 1		  ; bx = month - 1 (0 to 11)
   786 00000344 83FB01              <1> 	cmp	bx, 1		  ; if month > 2 and year mod 4  = 0	
   787 00000347 76EE                <1> 	jna	short gmt_2	  ; then mday = mday + 1
   788 00000349 08D2                <1> 	or	dl, dl		  ; if past 2/29 and leap year then
   789 0000034B 75EA                <1> 	jnz	short gmt_2	  ; add	leap day (to mday)
   790 0000034D 40                  <1> 	inc	ax		  ; mday = mday + 1
   791 0000034E EBE7                <1> 	jmp	short gmt_2
   792                              <1> gmt_3:
   793 00000350 43                  <1> 	inc	bx		  ; -> bx = month, 1 to 12
   794 00000351 891E[9C03]          <1> 	mov	word [month], bx
   795 00000355 29C1                <1> 	sub	cx, ax		  ; day = jday - mday + 1	
   796 00000357 41                  <1> 	inc	cx 			  
   797 00000358 890E[9A03]          <1> 	mov	word [day], cx
   798                              <1> 	
   799                              <1> 	; ax, bx, cx, dx is changed at return
   800                              <1> 	; output ->
   801                              <1> 	; [year], [month], [day], [hour], [minute], [second]
   802                              <1> 	; [yday] -> 24/11/2013
   803                              <1> 	; [wday] -> 24/11/2013
   804                              <1> 	;
   805                              <1> 	; 24/11/2013
   806 0000035C A1[A003]            <1> 	mov	ax, word [wday]	  ; [iday]
   807 0000035F 30D2                <1> 	xor	dl, dl ; xor dx, dx
   808                              <1> 	; dx = 0	
   809 00000361 83C004              <1> 	add	ax, 4
   810                              <1> 	; NOTE: January 1, 1970 was THURSDAY
   811                              <1> 	; ch = 0
   812 00000364 B107                <1> 	mov	cl, 7
   813 00000366 F7F1                <1> 	div	cx
   814 00000368 8916[A003]          <1> 	mov	word [wday], dx	  ; week of the day,  0 to 6 
   815                              <1> 	; 0 = sunday ... 6 = saturday
   816                              <1> 	;mov	word [isday], 0
   817                              <1> 
   818 0000036C C3                  <1> 	retn
   819                              <1> 
   820                              <1> div32:
   821                              <1> 	; Input:
   822                              <1> 	;	DX:AX = 32 bit dividend
   823                              <1> 	;          CX = 16 bit divisor
   824                              <1> 	; Output:
   825                              <1> 	;	DX:AX = 32 bit quotient
   826                              <1> 	;          BX = 16 bit remainder
   827 0000036D 89D3                <1> 	mov	bx, dx
   828 0000036F 93                  <1> 	xchg	ax, bx
   829 00000370 31D2                <1> 	xor	dx, dx
   830 00000372 F7F1                <1> 	div	cx 	; at first, divide DX
   831 00000374 93                  <1> 	xchg	ax, bx	; remainder is in DX
   832                              <1> 			; now, BX has quotient
   833                              <1> 			; save remainder
   834 00000375 F7F1                <1> 	div	cx	; so, DX_AX divided and
   835                              <1> 			; AX has quotient
   836                              <1> 			; DX has remainder
   837 00000377 87D3                <1> 	xchg	dx, bx	; finally, BX has remainder
   838                              <1> 
   839 00000379 C3                  <1> 	retn
   840                              <1> 
   841                              <1> ;sunday:
   842                              <1> 	; sunday(at, ad)
   843                              <1> 	; 	int *at;
   844                              <1> 	;	 {
   845                              <1> 	; 	register int *t, d;
   846                              <1> 	; 	t = at;
   847                              <1> 	; 	d = ad;
   848                              <1> 	; 	d = ad + dysize(t[YEAR]) - 365;
   849                              <1> 	; 	return(d - (d - t[YDAY] + t[WDAY] + 700) % 7);
   850                              <1> 	; 	}
   851                              <1> 
   852                              <1> 	;mov	dx, word [year]
   853                              <1> 	;call	dysize
   854                              <1> 	;sub	ax, 365
   855                              <1> 	;add	cx, ax
   856                              <1> ;	test	word [year], 11b
   857                              <1> ;	jnz	short @f
   858                              <1> 	; CX = 119 (77h) or CX = 303 (12Fh)
   859                              <1> 	;inc	cx
   860                              <1> ;	inc	cl
   861                              <1> ;@@:
   862                              <1> ;	mov	ax, cx
   863                              <1> ;	add	ax, word [wday]
   864                              <1> 	;adc	ax, 700
   865                              <1> ;	add	ax, 700
   866                              <1> ;	sub	ax, word [yday]
   867                              <1> 	;xor	dx, dx
   868                              <1> ;	mov	bx, 7
   869                              <1> 	;div	bx
   870                              <1> ;	div	bl
   871                              <1> ;	sub	cx, bx
   872                              <1> ;	retn
   873                              <1> 
   874                              <1> ;dysize:
   875                              <1> ; dysize(y)
   876                              <1> ;	{
   877                              <1> ;	if((y%4) == 0)
   878                              <1> ;		return(366);
   879                              <1> ;	return(365);
   880                              <1> ;	}
   881                              <1> 
   882                              <1> ;	mov	ax, 365	
   883                              <1> ;	test 	dx, 11b
   884                              <1> ;	jnz 	short @f
   885                              <1> ;	;inc 	ax
   886 0000037A FEC0                <1> 	inc 	al			
   887                              <1> ;@@:	
   888                              <1> ;	retn 
   889                              <1> 		
   890                              <1> 
   891                              <1> numb:   ; AX = 0 to 99
   892                              <1> 	;
   893                              <1> 	; numb(acp, n)
   894                              <1> 	; {
   895                              <1> 	;	register char *cp;
   896                              <1> 	;
   897                              <1> 	;	cp = acp;
   898                              <1> 	;	cp++;
   899                              <1> 	;	if (n>=10)
   900                              <1> 	;	   *cp++ = (n/10)%10 + '0';
   901                              <1> 	;	else
   902                              <1> 	;	   *cp++ = ' ';
   903                              <1> 	;	*cp++ = n%10 + '0';
   904                              <1> 	;	return(cp);
   905                              <1> 	; }
   906                              <1> 	;
   907                              <1> 	;mov	cl, 10
   908 0000037C 83F80A              <1> 	cmp	ax, 10
   909 0000037F 7306                <1> 	jnb	short nb1
   910 00000381 88C4                <1> 	mov	ah, al
   911 00000383 30C0                <1> 	xor	al, al ; 0
   912 00000385 EB04                <1> 	jmp	short nb2
   913                              <1> nb1:	
   914 00000387 F6F1                <1> 	div	cl
   915 00000389 88E2                <1> 	mov	dl, ah
   916                              <1> nb2:	
   917 0000038B 0430                <1> 	add	al, '0'
   918 0000038D AA                  <1> 	stosb	; digit 1
   919 0000038E 88E0                <1> 	mov	al, ah
   920 00000390 0430                <1> 	add	al, '0'
   921 00000392 AA                  <1> 	stosb	; digit 2
   922 00000393 C3                  <1> 	retn
   923                              <1> 
   924                              <1> 
   925                              <1> ;;; DATA
   926                              <1> 
   927                              <1> ;daylight: db 1 ; int daylight 1; /* Allow daylight conversion */
   928                              <1> ;nixonflg: db 0 ; int nixonflg 0; /* Daylight time all year around */
   929                              <1> ;daylbegin: dw 0
   930                              <1> ;daylend:  dw 0
   931                              <1> 
   932                              <1> ct:
   933                              <1> ; 24/11/2013 (re-order)
   934                              <1> ;
   935                              <1> ; Retro UNIX 8086 v1 - UNIX.ASM
   936                              <1> ; 09/04/2013 epoch variables
   937                              <1> ; Retro UNIX 8086 v1 Prototype: UNIXCOPY.ASM, 10/03/2013
   938                              <1> ;
   939                              <1> 
   940 00000394 0000                <1> second: dw 0
   941 00000396 0000                <1> minute: dw 0
   942 00000398 0000                <1> hour:	dw 0
   943 0000039A 0100                <1> day:	dw 1
   944 0000039C 0100                <1> month:	dw 1
   945 0000039E B207                <1> year:	dw 1970
   946 000003A0 0000                <1> wday:	dw 0 ; 24/11/2013
   947                              <1> ;yday:	dw 0 ; 24/11/2013
   948                              <1> ;isday:	dw 0 ; 24/11/2013
   949                              <1> 
   950                              <1> DMonth:
   951 000003A2 0000                <1> dw 0
   952 000003A4 1F00                <1> dw 31
   953 000003A6 3B00                <1> dw 59
   954 000003A8 5A00                <1> dw 90
   955 000003AA 7800                <1> dw 120
   956 000003AC 9700                <1> dw 151
   957 000003AE B500                <1> dw 181
   958 000003B0 D400                <1> dw 212
   959 000003B2 F300                <1> dw 243
   960 000003B4 1101                <1> dw 273
   961 000003B6 3001                <1> dw 304
   962 000003B8 4E01                <1> dw 334
   963                              <1> 
   964                              <1> ;ncp0:	db "Day Mon 00 00:00:00 1970", 0, 0
   965 000003BA 53756E204D6F6E2054- <1> ncp1:	db "Sun Mon Tue Wed Thu Fri Sat "
   965 000003C3 756520576564205468- <1>
   965 000003CC 752046726920536174- <1>
   965 000003D5 20                  <1>
   966 000003D6 4A616E20466562204D- <1> ncp2:	db "Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec "
   966 000003DF 617220417072204D61- <1>
   966 000003E8 79204A756E204A756C- <1>
   966 000003F1 204175672053657020- <1>
   966 000003FA 4F6374204E6F762044- <1>
   966 00000403 656320              <1>
   967                              <1> 
   968                              <1> cbuf:	; char cbuf[26]
   969 00000406 00<rep 1Ah>         <1> 	times 26 db 0
   970 00000420 00                  <1> 	db 0	; 02/06/2022
   971                              <1> 
   972                              <1> ;; ctime.c (Unix v5)
   973                              <1> ;
   974                              <1> ;#
   975                              <1> ;/*
   976                              <1> ; * This routine converts time as follows.
   977                              <1> ; * The epoch is 0000 Jan 1 1970 GMT.
   978                              <1> ; * The argument time is in seconds since then.
   979                              <1> ; * The localtime(t) entry returns a pointer to an array
   980                              <1> ; * containing
   981                              <1> ; *  seconds (0-59)
   982                              <1> ; *  minutes (0-59)
   983                              <1> ; *  hours (0-23)
   984                              <1> ; *  day of month (1-31)
   985                              <1> ; *  month (0-11)
   986                              <1> ; *  year-1970
   987                              <1> ; *  weekday (0-6, Sun is 0)
   988                              <1> ; *  day of the year
   989                              <1> ; *  daylight savings flag
   990                              <1> ; *
   991                              <1> ; * The routine corrects for daylight saving
   992                              <1> ; * time and will work in any time zone provided
   993                              <1> ; * "timezone" is adjusted to the difference between
   994                              <1> ; * Greenwich and local standard time (measured in seconds).
   995                              <1> ; * In places like Michigan "daylight" must
   996                              <1> ; * be initialized to 0 to prevent the conversion
   997                              <1> ; * to daylight time.
   998                              <1> ; *
   999                              <1> ; * "nixonflg,", if set to 1, will
  1000                              <1> ; * cause daylight savings time all year around
  1001                              <1> ; * independently of "daylight".
  1002                              <1> ; *
  1003                              <1> ; * The routine does not work
  1004                              <1> ; * in Saudi Arabia which runs on Solar time.
  1005                              <1> ; *
  1006                              <1> ; * asctime(tvec))
  1007                              <1> ; * where tvec is produced by localtime
  1008                              <1> ; * returns a ptr to a character string
  1009                              <1> ; * that has the ascii time in the form
  1010                              <1> ; *	Thu Jan 01 00:00:00 1970n0\; *	01234567890123456789012345
  1012                              <1> ; *	0	  1	    2
  1013                              <1> ; *
  1014                              <1> ; * ctime(t) just calls localtime, then asctime.
  1015                              <1> ; */
  1016                              <1> ;char	cbuf[26];
  1017                              <1> ;int	dmsize[12]
  1018                              <1> ;{
  1019                              <1> ;	31,
  1020                              <1> ;	28,
  1021                              <1> ;	31,
  1022                              <1> ;	30,
  1023                              <1> ;	31,
  1024                              <1> ;	30,
  1025                              <1> ;	31,
  1026                              <1> ;	31,
  1027                              <1> ;	30,
  1028                              <1> ;	31,
  1029                              <1> ;	30,
  1030                              <1> ;	31
  1031                              <1> ;};
  1032                              <1> ;
  1033                              <1> ;int timezone	5*60*60;
  1034                              <1> ;int tzname[]
  1035                              <1> ;{
  1036                              <1> ;	"EST",
  1037                              <1> ;	"EDT",
  1038                              <1> ;};
  1039                              <1> ;int	daylight 1;	/* Allow daylight conversion */
  1040                              <1> ;int	nixonflg 0;	/* Daylight time all year around */
  1041                              <1> ;
  1042                              <1> ;#define SEC	0
  1043                              <1> ;#define MIN	1
  1044                              <1> ;#define HOUR	2
  1045                              <1> ;#define MDAY	3 
  1046                              <1> ;#define MON	4
  1047                              <1> ;#define YEAR	5
  1048                              <1> ;#define WDAY	6
  1049                              <1> ;#define YDAY	7
  1050                              <1> ;#define ISDAY	8
  1051                              <1> ;
  1052                              <1> ;ctime(at)
  1053                              <1> ;int *at;
  1054                              <1> ;{
  1055                              <1> ;	return(asctime(localtime(at)));
  1056                              <1> ;}
  1057                              <1> ;
  1058                              <1> ;localtime(tim)
  1059                              <1> ;int tim[];
  1060                              <1> ;{
  1061                              <1> ;	register int *t, *ct, dayno;
  1062                              <1> ;	int daylbegin, daylend;
  1063                              <1> ;	int copyt[2];
  1064                              <1> ;
  1065                              <1> ;	t = copyt;
  1066                              <1> ;	t[0] = tim[0];
  1067                              <1> ;	t[1] = tim[1];
  1068                              <1> ;	dpadd(t, -timezone);
  1069                              <1> ;	ct = gmtime(t);
  1070                              <1> ;	dayno = ct[YDAY];
  1071                              <1> ;	if (nixonflg && (ct[YEAR]>74 || ct[YEAR]==74 && (dayno > 5 ||
  1072                              <1> ;	    dayno==5 && ct[HOUR]>=2))) {
  1073                              <1> ;		daylight =| 1;
  1074                              <1> ;		daylbegin = -1;
  1075                              <1> ;		daylend = 367;
  1076                              <1> ;	} else {
  1077                              <1> ;		daylbegin = sunday(ct, 119);	/* last Sun in Apr */
  1078                              <1> ;		daylend = sunday(ct, 303);	/* last Sun in Oct */
  1079                              <1> ;	}
  1080                              <1> ;	if (daylight &&
  1081                              <1> ;	    (dayno>daylbegin || (dayno==daylbegin && ct[HOUR]>=2)) &&
  1082                              <1> ;	    (dayno<daylend || (dayno==daylend && ct[HOUR]<1))) {
  1083                              <1> ;		dpadd(t, 1*60*60);
  1084                              <1> ;		ct = gmtime(t);
  1085                              <1> ;		ct[ISDAY]++;
  1086                              <1> ;	}
  1087                              <1> ;	return(ct);
  1088                              <1> ;}
  1089                              <1> ;
  1090                              <1> ;sunday(at, ad)
  1091                              <1> ;int *at;
  1092                              <1> ;{
  1093                              <1> ;	register int *t, d;
  1094                              <1> ;
  1095                              <1> ;	t = at;
  1096                              <1> ;	d = ad;
  1097                              <1> ;	d = ad + dysize(t[YEAR]) - 365;
  1098                              <1> ;	return(d - (d - t[YDAY] + t[WDAY] + 700) % 7);
  1099                              <1> ;}
  1100                              <1> ;
  1101                              <1> ;gmtime(tim)
  1102                              <1> ;int tim[];
  1103                              <1> ;{
  1104                              <1> ;	register int d0, d1;
  1105                              <1> ;	register *tp;
  1106                              <1> ;	static xtime[9];
  1107                              <1> ;	extern int ldivr;
  1108                              <1> ;
  1109                              <1> ;	/*
  1110                              <1> ;	 * break initial number into
  1111                              <1> ;	 * multiples of 8 hours.
  1112                              <1> ;	 * (28800 = 60*60*8)
  1113                              <1> ;	 */
  1114                              <1> ;
  1115                              <1> ;	d0 = ldiv(tim[0], tim[1], 28800);
  1116                              <1> ;	d1 = ldivr;
  1117                              <1> ;	tp = &xtime[0];
  1118                              <1> ;
  1119                              <1> ;	/*
  1120                              <1> ;	 * generate hours:minutes:seconds
  1121                              <1> ;	 */
  1122                              <1> ;
  1123                              <1> ;	*tp++ = d1%60;
  1124                              <1> ;	d1 =/ 60;
  1125                              <1> ;	*tp++ = d1%60;
  1126                              <1> ;	d1 =/ 60;
  1127                              <1> ;	d1 =+ (d0%3)*8;
  1128                              <1> ;	d0 =/ 3;
  1129                              <1> ;	*tp++ = d1;
  1130                              <1> ;
  1131                              <1> ;	/*
  1132                              <1> ;	 * d0 is the day number.
  1133                              <1> ;	 * generate day of the week.
  1134                              <1> ;	 */
  1135                              <1> ;
  1136                              <1> ;	xtime[WDAY] = (d0+4)%7;
  1137                              <1> ;
  1138                              <1> ;	/*
  1139                              <1> ;	 * year number
  1140                              <1> ;	 */
  1141                              <1> ;	for(d1=70; d0 >= dysize(d1); d1++)
  1142                              <1> ;		d0 =- dysize(d1);
  1143                              <1> ;	xtime[YEAR] = d1;
  1144                              <1> ;	xtime[YDAY] = d0;
  1145                              <1> ;
  1146                              <1> ;	/*
  1147                              <1> ;	 * generate month
  1148                              <1> ;	 */
  1149                              <1> ;
  1150                              <1> ;	if (dysize(d1)==366)
  1151                              <1> ;		dmsize[1] = 29;
  1152                              <1> ;	for(d1=0; d0 >= dmsize[d1]; d1++)
  1153                              <1> ;		d0 =- dmsize[d1];
  1154                              <1> ;	dmsize[1] = 28;
  1155                              <1> ;	*tp++ = d0+1;
  1156                              <1> ;	*tp++ = d1;
  1157                              <1> ;	xtime[ISDAY] = 0;
  1158                              <1> ;	return(xtime);
  1159                              <1> ;}
  1160                              <1> ;
  1161                              <1> ;asctime(t)
  1162                              <1> ;int *t;
  1163                              <1> ;{
  1164                              <1> ;	register char *cp, *ncp;
  1165                              <1> ;	register int *tp;
  1166                              <1> ;
  1167                              <1> ;	cp = cbuf;
  1168                              <1> ;	for (ncp = "Day Mon 00 00:00:00 1900\n"; *cp++ = *ncp++;);
  1169                              <1> ;	ncp = &"SunMonTueWedThuFriSat"[3*t[6]];
  1170                              <1> ;	cp = cbuf;
  1171                              <1> ;	*cp++ = *ncp++;
  1172                              <1> ;	*cp++ = *ncp++;
  1173                              <1> ;	*cp++ = *ncp++;
  1174                              <1> ;	cp++;
  1175                              <1> ;	tp = &t[4];
  1176                              <1> ;	ncp = &"JanFebMarAprMayJunJulAugSepOctNovDec"[(*tp)*3];
  1177                              <1> ;	*cp++ = *ncp++;
  1178                              <1> ;	*cp++ = *ncp++;
  1179                              <1> ;	*cp++ = *ncp++;
  1180                              <1> ;	cp = numb(cp, *--tp);
  1181                              <1> ;	cp = numb(cp, *--tp+100);
  1182                              <1> ;	cp = numb(cp, *--tp+100);
  1183                              <1> ;	cp = numb(cp, *--tp+100);
  1184                              <1> ;	cp =+ 2;
  1185                              <1> ;	cp = numb(cp, t[YEAR]);
  1186                              <1> ;	return(cbuf);
  1187                              <1> ;}
  1188                              <1> ;
  1189                              <1> ;dysize(y)
  1190                              <1> ;{
  1191                              <1> ;	if((y%4) == 0)
  1192                              <1> ;		return(366);
  1193                              <1> ;	return(365);
  1194                              <1> ;}
  1195                              <1> ;
  1196                              <1> ;
  1197                              <1> ;numb:
  1198                              <1> ;	
  1199                              <1> ;
  1200                              <1> ;numb(acp, n)
  1201                              <1> ;{
  1202                              <1> ;	register char *cp;
  1203                              <1> ;	cp = acp;
  1204                              <1> ;	cp++;
  1205                              <1> ;	if (n>=10)
  1206                              <1> ;		*cp++ = (n/10)%10 + '0';
  1207                              <1> ;	else
  1208                              <1> ;		*cp++ = ' ';
  1209                              <1> ;	*cp++ = n%10 + '0';
  1210                              <1> ;	return(cp);
  1211                              <1> ;}
  1212                              <1> ;
   448                                  ;=================================================================
   449                                  
   450                                  ;-----------------------------------------------------------------
   451                                  ;  data - initialized data
   452                                  ;-----------------------------------------------------------------
   453                                  
   454                                  lpt1:
   455 00000421 2F6465762F6C707200      	db '/dev/lpr', 0
   456                                  
   457                                  program_msg:
   458 0000042A 0D0A                    	db  0Dh, 0Ah
   459 0000042C 526574726F20554E49-     	db  'Retro UNIX 8086 v1 PRINT Utility by Erdogan TAN - 29/06/2022'
   459 00000435 582038303836207631-
   459 0000043E 205052494E54205574-
   459 00000447 696C69747920627920-
   459 00000450 4572646F67616E2054-
   459 00000459 414E202D2032392F30-
   459 00000462 362F32303232       
   460 00000468 0D0A00                  	db  0Dh, 0Ah, 0
   461                                  usage_msg:
   462 0000046B 0D0A                    	db  0Dh, 0Ah
   463 0000046D 55736167653A207072-     	db  'Usage: pr [ -rlcm ] filename1 ... '
   463 00000476 205B202D726C636D20-
   463 0000047F 5D2066696C656E616D-
   463 00000488 6531202E2E2E20     
   464 0000048F 0D0A                    	db  0Dh, 0Ah
   465 00000491 09202020204F707469-     	db  '	    Options: '
   465 0000049A 6F6E733A20         
   466 0000049F 0D0A                    	db  0Dh, 0Ah
   467 000004A1 202020202020202020-     	db  '             -r : 66 lines per page (default option)'
   467 000004AA 202020202D72203A20-
   467 000004B3 3636206C696E657320-
   467 000004BC 706572207061676520-
   467 000004C5 2864656661756C7420-
   467 000004CE 6F7074696F6E29     
   468 000004D5 0D0A                    	db  0Dh, 0Ah	
   469 000004D7 202020202020202020-     	db  '             -l : 78 lines per page'
   469 000004E0 202020202D6C203A20-
   469 000004E9 3738206C696E657320-
   469 000004F2 7065722070616765   
   470 000004FA 0D0A                    	db  0Dh, 0Ah
   471 000004FC 202020202020202020-     	db  '             -m : modification date (default option)'
   471 00000505 202020202D6D203A20-
   471 0000050E 6D6F64696669636174-
   471 00000517 696F6E206461746520-
   471 00000520 2864656661756C7420-
   471 00000529 6F7074696F6E29     
   472 00000530 0D0A                    	db  0Dh, 0Ah
   473 00000532 202020202020202020-     	db  '             -c : current date'
   473 0000053B 202020202D63203A20-
   473 00000544 63757272656E742064-
   473 0000054D 617465             
   474 00000550 0D0A                    	db  0Dh, 0Ah
   475                                  nextline:
   476 00000552 0D0A00                  	db  0Dh, 0Ah, 0
   477                                  
   478                                  size_pmsg equ usage_msg-(program_msg+1)
   479                                  
   480                                  printer_err_msg:
   481 00000555 0D0A                    	db 0Dh, 0Ah	
   482 00000557 5072696E7465722045-     	db "Printer Error !"
   482 00000560 72726F722021       
   483 00000566 0D0A00                   	db 0Dh, 0Ah, 0  		
   484                                  
   485                                  size_umsg equ printer_err_msg-(usage_msg+1)
   486                                  
   487                                  file_err_msg:
   488 00000569 0D0A                    	db 0Dh, 0Ah	
   489 0000056B 46696C65204572726F-     	db "File Error !"
   489 00000574 722021             
   490 00000577 0D0A00                   	db 0Dh, 0Ah, 0  
   491                                  
   492                                  EmptyLines:
   493 0000057A 0D0A0D0A0D0A0D0A0D-     	db 0Dh, 0Ah, 0Dh, 0Ah, 0Dh, 0Ah, 0Dh, 0Ah, 0Dh, 0Ah
   493 00000583 0A                 
   494 00000584 2020                    	db 20h, 20h
   495                                  PageHeader:
   496 00000586 205061676520            	db " Page "
   497                                  
   498 0000058C 42                      rows:	db 66
   499 0000058D 00                      cdatef:	db 0
   500                                  
   501                                  ;-----------------------------------------------------------------
   502                                  ;  bss - uninitialized data
   503                                  ;-----------------------------------------------------------------	
   504                                  
   505                                  align 2
   506                                  
   507                                  bss_start:
   508                                  
   509                                  ABSOLUTE bss_start
   510                                  
   511 0000058E ??                      argc:	 resb 1
   512 0000058F ??                      files:	 resb 1
   513 00000590 ????                    pgnumber: resw 1
   514 00000592 ??                      eof:	 resb 1
   515 00000593 ??                      cchar:	 resb 1
   516 00000594 ??                      chr:	 resb 1
   517 00000595 ??                      	 resb 1
   518 00000596 ????????                mtime:	 resd 1	
   519                                  
   520                                  ; 26/06/2022
   521 0000059A ????                    prnfnum: resw 1
   522                                  
   523                                  fbuf:
   524                                  txtfnum: 
   525 0000059C <res 86h>               	resb 128+6
   526                                  stbuf:
   527 00000622 <res 22h>               	resb 34
   528                                  
   529                                  bss_end:
   530                                  
   531                                  ;-----------------------------------------------------------------
   532                                  ; 25/06/2022
   533                                  ;-----------------------------------------------------------------
   534                                  ; Original UNIX v2 - pr (utility) disassembled source code
   535                                  ;-----------------------------------------------------------------
   536                                  
   537                                  ;
   538                                  ; +-------------------------------------------------------------------------+
   539                                  ; |   This file	has been generated by The Interactive Disassembler (IDA)    |
   540                                  ; |	      Copyright	(c) 2013 Hex-Rays, <support@hex-rays.com>	    |
   541                                  ; +-------------------------------------------------------------------------+
   542                                  ;
   543                                  ; File Name   :	C:\Users\Erdoan\Desktop\s2.tar\bin\pr
   544                                  ; Format      :	Binary file
   545                                  ; Base Address:	0000h Range: 4000h - 448Eh Loaded length: 0000048Eh
   546                                  
   547                                  ; Processor	  : PDP11
   548                                  ; Target assembler: Macro-11 Assembler
   549                                  
   550                                  ;.macro .array of,type,cnt,val
   551                                  ;.rept  cnt
   552                                  ; type  val
   553                                  ;.endr
   554                                  ;.endm .array
   555                                  
   556                                  ; ===========================================================================
   557                                  
   558                                  ;; Segment type:	Regular
   559                                  ;.PSECT RAM
   560                                  ;byte_0:		.blkb  40000
   561                                  ;; ---------------------------------------------------------------------------
   562                                  ;
   563                                  ;loc_40000:
   564                                  ;		br	loc_40014
   565                                  ;; ---------------------------------------------------------------------------
   566                                  ;		.word 2216
   567                                  ;		.word 0
   568                                  ;		.word 0
   569                                  ;		.word 0
   570                                  ;		.word 0
   571                                  ;; ---------------------------------------------------------------------------
   572                                  ;
   573                                  ;loc_40014:				
   574                                  ;		trap	33
   575                                  ;; ---------------------------------------------------------------------------
   576                                  ;		.word intr_loc
   577                                  ;; ---------------------------------------------------------------------------
   578                                  ;		mov	(SP)+, argc
   579                                  ;		tst	(SP)+
   580                                  ;		clr	R0
   581                                  ;		trap	34
   582                                  ;; ---------------------------------------------------------------------------
   583                                  ;		.word fnum
   584                                  ;; ---------------------------------------------------------------------------
   585                                  ;		bit	#1, statbuf
   586                                  ;		beq	chmod_err
   587                                  ;		trap	22
   588                                  ;; ---------------------------------------------------------------------------
   589                                  ;		.word ttyx		; "/dev/tty0"
   590                                  ;		.word statbuf
   591                                  ;; ---------------------------------------------------------------------------
   592                                  ;		mov	fnum, R0
   593                                  ;		sub	statbuf, R0
   594                                  ;		add	#60, R0	; '0'
   595                                  ;		movb	R0, ttyx+10
   596                                  ;		trap	17
   597                                  ;; ---------------------------------------------------------------------------
   598                                  ;		.word ttyx		; "/dev/tty0"
   599                                  ;		.word 14
   600                                  ;; ---------------------------------------------------------------------------
   601                                  ;		bcs	chmod_err
   602                                  ;		inc	chmodflg
   603                                  ;
   604                                  ;chmod_err:				
   605                                  ;		clr	fnum
   606                                  ;
   607                                  ;err_cf:					
   608                                  ;		mov	fnum, R0
   609                                  ;		beq	err_cf_next
   610                                  ;		trap	6
   611                                  ;		clr	fnum
   612                                  ;
   613                                  ;err_cf_next:				
   614                                  ;		dec	argc
   615                                  ;		bgt	next_arg
   616                                  ;		jmp	intr_loc
   617                                  ;; ---------------------------------------------------------------------------
   618                                  ;
   619                                  ;next_arg:				
   620                                  ;		mov	(SP)+, R0
   621                                  ;		mov	R0, fname_ptr
   622                                  ;		cmpb	(R0)+, #55 ; '-'
   623                                  ;		bne	open_txt_file
   624                                  ;		cmpb	@R0, #154 ; 'l'
   625                                  ;		bne	case_r
   626                                  ;		mov	#78., rows
   627                                  ;		br	err_cf
   628                                  ;; ---------------------------------------------------------------------------
   629                                  ;
   630                                  ;case_r:					
   631                                  ;		cmpb	@R0, #162 ; 'r'
   632                                  ;		bne	case_m
   633                                  ;		mov	#66., rows
   634                                  ;		br	err_cf
   635                                  ;; ---------------------------------------------------------------------------
   636                                  ;
   637                                  ;case_m:					
   638                                  ;		cmpb	@R0, #155 ; 'm'
   639                                  ;		bne	case_c
   640                                  ;		clr	cdateflg
   641                                  ;		br	err_cf
   642                                  ;; ---------------------------------------------------------------------------
   643                                  ;
   644                                  ;case_c:					
   645                                  ;		cmpb	@R0, #143 ; 'c'
   646                                  ;		bne	open_txt_file
   647                                  ;		inc	cdateflg
   648                                  ;		br	err_cf
   649                                  ;; ---------------------------------------------------------------------------
   650                                  ;
   651                                  ;open_txt_file:				
   652                                  ;		mov	fname_ptr, R0
   653                                  ;		jsr	R5, fopen
   654                                  ;; ---------------------------------------------------------------------------
   655                                  ;		.word fnum
   656                                  ;; ---------------------------------------------------------------------------
   657                                  ;		bcs	err_cf
   658                                  ;		tst	cdateflg
   659                                  ;		beq	get_fmod_time
   660                                  ;		trap	15
   661                                  ;		mov	@#word_177304, mtime_l
   662                                  ;		mov	@#word_177302, mtime_h
   663                                  ;		br	write_pages
   664                                  ;; ---------------------------------------------------------------------------
   665                                  ;
   666                                  ;get_fmod_time:				
   667                                  ;		mov	fnum, R0
   668                                  ;		trap	34
   669                                  ;; ---------------------------------------------------------------------------
   670                                  ;		.word fstatbuf
   671                                  ;; ---------------------------------------------------------------------------
   672                                  ;		mov	i_mtime_l, mtime_l
   673                                  ;		mov	i_mtime_h, mtime_h
   674                                  ;
   675                                  ;write_pages:				
   676                                  ;		clr	pagenumber
   677                                  ;		clr	eof
   678                                  ;		clr	cchar
   679                                  ;
   680                                  ;write_next_page:			
   681                                  ;		call	readf
   682                                  ;		br	err_cf
   683                                  ;; ---------------------------------------------------------------------------
   684                                  ;		mov	#1, R0
   685                                  ;		trap	4
   686                                  ;; ---------------------------------------------------------------------------
   687                                  ;		.word EmptyLines	; "\n\n\n\n\n"
   688                                  ;		.word 2
   689                                  ;; ---------------------------------------------------------------------------
   690                                  ;		mov	#1, R0
   691                                  ;		mov	mtime_l, @#word_177304
   692                                  ;		mov	mtime_h, @#word_177302
   693                                  ;		call	write_hdr_date
   694                                  ;		mov	#1, R0
   695                                  ;		trap	4
   696                                  ;; ---------------------------------------------------------------------------
   697                                  ;		.word PageHeader	; "   Page "
   698                                  ;		.word 2
   699                                  ;; ---------------------------------------------------------------------------
   700                                  ;		inc	pagenumber
   701                                  ;		mov	fname_ptr, R1
   702                                  ;		mov	R1, f_name_ptr
   703                                  ;		mov	#-1, R0
   704                                  ;
   705                                  ;strlen:					
   706                                  ;		inc	R0
   707                                  ;		tstb	(R1)+
   708                                  ;		bne	strlen
   709                                  ;		mov	R0, charcount
   710                                  ;		mov	#1, R0
   711                                  ;		trap	4
   712                                  ;; ---------------------------------------------------------------------------
   713                                  ;f_name_ptr:	.word 40000		
   714                                  ;charcount:	.word 40000		
   715                                  ;; ---------------------------------------------------------------------------
   716                                  ;		mov	#1, R0
   717                                  ;		trap	4
   718                                  ;; ---------------------------------------------------------------------------
   719                                  ;		.word PageHeader+2
   720                                  ;		.word 6
   721                                  ;; ---------------------------------------------------------------------------
   722                                  ;		mov	pagenumber, @#word_177304
   723                                  ;		call	write_pg_num
   724                                  ;		mov	#1, R0
   725                                  ;		trap	4
   726                                  ;; ---------------------------------------------------------------------------
   727                                  ;		.word EmptyLines	; "\n\n\n\n\n"
   728                                  ;		.word 4
   729                                  ;; ---------------------------------------------------------------------------
   730                                  ;		mov	rows, R1
   731                                  ;		sub	#11., R1
   732                                  ;
   733                                  ;write_next_char:			
   734                                  ;		call	get_char
   735                                  ;		call	write_char
   736                                  ;		cmp	R0, #10.
   737                                  ;		bne	write_next_char
   738                                  ;		dec	R1
   739                                  ;		bne	write_next_char
   740                                  ;		mov	#1, R0
   741                                  ;		trap	4
   742                                  ;; ---------------------------------------------------------------------------
   743                                  ;		.word EmptyLines	; "\n\n\n\n\n"
   744                                  ;		.word 5
   745                                  ;; ---------------------------------------------------------------------------
   746                                  ;		br	write_next_page
   747                                  ;; ---------------------------------------------------------------------------
   748                                  ;
   749                                  ;intr_loc:				
   750                                  ;					
   751                                  ;		tst	chmodflg
   752                                  ;		beq	_exit
   753                                  ;		trap	17
   754                                  ;; ---------------------------------------------------------------------------
   755                                  ;		.word ttyx		; "/dev/tty0"
   756                                  ;		.word 15
   757                                  ;; ---------------------------------------------------------------------------
   758                                  ;
   759                                  ;_exit:					
   760                                  ;		trap	1
   761                                  ;
   762                                  ;; =============== SUBROUTINE ================================================
   763                                  ;
   764                                  ;
   765                                  ;write_pg_num:				
   766                                  ;					
   767                                  ;		clr	@#word_177302
   768                                  ;		mov	#10., @#word_177300
   769                                  ;		mov	@#word_177302, -(SP)
   770                                  ;		tst	@#word_177304
   771                                  ;		beq	wrt_pg_num_1
   772                                  ;		call	write_pg_num
   773                                  ;
   774                                  ;wrt_pg_num_1:				
   775                                  ;		mov	(SP)+, R0
   776                                  ;		add	#60, R0	; '0'
   777                                  ;
   778                                  ;write_char:				
   779                                  ;		mov	R0, pn_chr
   780                                  ;		mov	#1, R0
   781                                  ;		trap	4
   782                                  ;; End of function write_pg_num
   783                                  ;
   784                                  ;; ---------------------------------------------------------------------------
   785                                  ;		.word pn_chr
   786                                  ;		.word 1
   787                                  ;; ---------------------------------------------------------------------------
   788                                  ;		mov	pn_chr, R0
   789                                  ;		return
   790                                  ;
   791                                  ;; =============== SUBROUTINE ================================================
   792                                  ;
   793                                  ;
   794                                  ;get_char:				
   795                                  ;					
   796                                  ;		mov	cchar, R0
   797                                  ;		beq	get_char_1
   798                                  ;		clr	cchar
   799                                  ;		return
   800                                  ;; ---------------------------------------------------------------------------
   801                                  ;
   802                                  ;get_char_1:				
   803                                  ;		tst	eof
   804                                  ;		beq	get_next_char
   805                                  ;		mov	#10., R0
   806                                  ;		return
   807                                  ;; ---------------------------------------------------------------------------
   808                                  ;
   809                                  ;get_next_char:				
   810                                  ;		jsr	R5, getc
   811                                  ;; End of function get_char
   812                                  ;
   813                                  ;; ---------------------------------------------------------------------------
   814                                  ;		.word fnum
   815                                  ;; ---------------------------------------------------------------------------
   816                                  ;		bcc	getc_ok
   817                                  ;		mov	PC, eof
   818                                  ;		br	get_char
   819                                  ;; ---------------------------------------------------------------------------
   820                                  ;
   821                                  ;getc_ok:				
   822                                  ;		return
   823                                  ;
   824                                  ;; =============== SUBROUTINE ================================================
   825                                  ;
   826                                  ;
   827                                  ;readf:				
   828                                  ;		call	get_char
   829                                  ;		mov	R0, cchar
   830                                  ;		tst	eof
   831                                  ;		bne	readf_err
   832                                  ;		add	#2, @SP
   833                                  ;
   834                                  ;readf_err:				
   835                                  ;		return
   836                                  ;; End of function readf
   837                                  ;
   838                                  ;; ---------------------------------------------------------------------------
   839                                  ;EmptyLines:	.ascii <12>		
   840                                  ;		.ascii <12>
   841                                  ;		.ascii <12>
   842                                  ;		.ascii <12><12>
   843                                  ;PageHeader:	.ascii \   Page \       
   844                                  ;ttyx:		.ascii \/dev/tty0\<0>   
   845                                  ;		.byte	 0 ;
   846                                  ;rows:		.word 102		
   847                                  ;mtime_l:	.word 0			
   848                                  ;mtime_h:	.word 0			
   849                                  ;argc:		.word 0			
   850                                  ;					
   851                                  ;eof:		.word 0			
   852                                  ;					
   853                                  ;cchar:		.word 0			
   854                                  ;pn_chr:	.word 0			
   855                                  ;					
   856                                  ;pagenumber:	.word 0			
   857                                  ;					
   858                                  ;fnum:		.word 0			
   859                                  ;statbuf:	.word 0			
   860                                  ;		.word 0
   861                                  ;		.word 0
   862                                  ;		.word 0
   863                                  ;fstatbuf:	.word 0			
   864                                  ;		.word 0
   865                                  ;		.word 0
   866                                  ;		.word 0
   867                                  ;		.word 0
   868                                  ;		.word 0
   869                                  ;		.word 0
   870                                  ;		.word 0
   871                                  ;		.word 0
   872                                  ;		.word 0
   873                                  ;		.word 0
   874                                  ;		.word 0
   875                                  ;		.word 0
   876                                  ;		.word 0
   877                                  ;i_mtime_h:	.word 0			
   878                                  ;i_mtime_l:	.word 0			
   879                                  ;i_rsvd:	.word 0
   880                                  ;		.array of .bytes cnt=132 val=0
   881                                  ;chmodflg:	.word 0			
   882                                  ;fname_ptr:	.word 0			
   883                                  ;					
   884                                  ;cdateflg:	.word 0			
   885                                  ;; ---------------------------------------------------------------------------
   886                                  ;
   887                                  ;write_hdr_date:				
   888                                  ;		mov	R1, -(SP)
   889                                  ;		sub	#20, SP
   890                                  ;		mov	R0, R1
   891                                  ;		mov	SP, R0
   892                                  ;		call	calc_date
   893                                  ;		mov	R0, datebufptr
   894                                  ;		mov	R1, R0
   895                                  ;		trap	4
   896                                  ;; ---------------------------------------------------------------------------
   897                                  ;datebufptr:	.word 40000		
   898                                  ;		.word 15.
   899                                  ;; ---------------------------------------------------------------------------
   900                                  ;		add	#16., SP
   901                                  ;		mov	(SP)+, R1
   902                                  ;		return
   903                                  ;; ---------------------------------------------------------------------------
   904                                  ;
   905                                  ;calc_date:				
   906                                  ;		mov	R2, -(SP)
   907                                  ;		mov	R3, -(SP)
   908                                  ;		cmp	@#word_177302, word_41700
   909                                  ;		bcs	loc_41372
   910                                  ;		bhi	loc_41340
   911                                  ;		cmp	@#word_177304, word_41702
   912                                  ;		bcs	loc_41372
   913                                  ;
   914                                  ;loc_41340:				
   915                                  ;		mov	@#word_177302, -(SP)
   916                                  ;		sub	word_41702, @#word_177304
   917                                  ;		sbc	@SP
   918                                  ;		sub	word_41700, @SP
   919                                  ;		mov	(SP)+, @#word_177302
   920                                  ;		mov	#29., february
   921                                  ;
   922                                  ;loc_41372:				
   923                                  ;		mov	#-4, @#word_177314
   924                                  ;		mov	#32274,	@#word_177300
   925                                  ;		mov	@#word_177304, R3
   926                                  ;		mov	@#word_177302, @#word_177304
   927                                  ;		mov	#2, @#word_177314
   928                                  ;		mov	#15., @#word_177300
   929                                  ;		add	#15., R0
   930                                  ;		jsr	R5, divide
   931                                  ;; ---------------------------------------------------------------------------
   932                                  ;		.word 10.
   933                                  ;; ---------------------------------------------------------------------------
   934                                  ;		jsr	R5, divide
   935                                  ;		.word 6
   936                                  ;; ---------------------------------------------------------------------------
   937                                  ;		movb	#72, -(R0) ; ':'
   938                                  ;		jsr	R5, divide
   939                                  ;; ---------------------------------------------------------------------------
   940                                  ;		.word 10.
   941                                  ;; ---------------------------------------------------------------------------
   942                                  ;		jsr	R5, divide
   943                                  ;; ---------------------------------------------------------------------------
   944                                  ;		.word 6
   945                                  ;; ---------------------------------------------------------------------------
   946                                  ;		movb	#72, -(R0) ; ':'
   947                                  ;		mov	R3, @#word_177304
   948                                  ;		mov	#30, @#word_177300
   949                                  ;		mov	@#word_177304, R3
   950                                  ;		mov	@#word_177302, @#word_177304
   951                                  ;		jsr	R5, divide
   952                                  ;; ---------------------------------------------------------------------------
   953                                  ;		.word 10.
   954                                  ;; ---------------------------------------------------------------------------
   955                                  ;		jsr	R5, divide
   956                                  ;; ---------------------------------------------------------------------------
   957                                  ;		.word 10.
   958                                  ;; ---------------------------------------------------------------------------
   959                                  ;		mov	#mdays,	R2
   960                                  ;
   961                                  ;loc_41544:
   962                                  ;		cmp	@R2, R3
   963                                  ;		bgt	loc_41554
   964                                  ;		sub	(R2)+, R3
   965                                  ;		br	loc_41544
   966                                  ;; ---------------------------------------------------------------------------
   967                                  ;
   968                                  ;loc_41554:
   969                                  ;		movb	#40, -(R0) ; ' '
   970                                  ;		sub	#mdays,	R2
   971                                  ;		asl	R2
   972                                  ;		add	#byte_41740, R2
   973                                  ;		inc	R3
   974                                  ;		mov	R3, @#word_177304
   975                                  ;		jsr	R5, divide
   976                                  ;; ---------------------------------------------------------------------------
   977                                  ;		.word 10.
   978                                  ;; ---------------------------------------------------------------------------
   979                                  ;		tst	@#word_177304
   980                                  ;		beq	loc_41630
   981                                  ;		add	#60, @#word_177304 ; '0'
   982                                  ;		movb	@#word_177304, -(R0)
   983                                  ;		br	loc_41634
   984                                  ;; ---------------------------------------------------------------------------
   985                                  ;
   986                                  ;loc_41630:				
   987                                  ;		movb	#40, -(R0) ; ' '
   988                                  ;
   989                                  ;loc_41634:				
   990                                  ;		movb	#40, -(R0) ; ' '
   991                                  ;		movb	-(R2), -(R0)
   992                                  ;		movb	-(R2), -(R0)
   993                                  ;		movb	-(R2), -(R0)
   994                                  ;		mov	(SP)+, R3
   995                                  ;		mov	(SP)+, R2
   996                                  ;		return
   997                                  ;
   998                                  ;; =============== SUBROUTINE ================================================
   999                                  ;
  1000                                  ;
  1001                                  ;divide:					
  1002                                  ;		clr	@#word_177302
  1003                                  ;		mov	(R5)+, @#word_177300
  1004                                  ;		add	#60, @#word_177302 ; '0'
  1005                                  ;		movb	@#word_177302, -(R0)
  1006                                  ;		rts	R5
  1007                                  ;; End of function divide
  1008                                  ;
  1009                                  ;; ---------------------------------------------------------------------------
  1010                                  ;word_41700:	.word 70310		
  1011                                  ;word_41702:	.word 11000		
  1012                                  ;mdays:		.word 31.
  1013                                  ;february:	.word 28.		
  1014                                  ;		.word 31.
  1015                                  ;		.word 30.
  1016                                  ;		.word 31.
  1017                                  ;		.word 30.
  1018                                  ;		.word 31.
  1019                                  ;		.word 31.
  1020                                  ;		.word 30.
  1021                                  ;		.word 31.
  1022                                  ;		.word 30.
  1023                                  ;		.word 999.
  1024                                  ;		.byte 0
  1025                                  ;Jan:		.ascii \Jan;byte_41740:	.byte 0
  1027                                  ;Feb:		.ascii \Feb\<0>
  1028                                  ;Mar:		.ascii \Mar\<0>
  1029                                  ;Apr:		.ascii \Apr\<0>
  1030                                  ;May:		.ascii \May\<0>
  1031                                  ;Jun:		.ascii \Jun\<0>
  1032                                  ;Jul:		.ascii \Jul\<0>
  1033                                  ;Aug:		.ascii \Aug\<0>
  1034                                  ;Sep:		.ascii \Sep\<0>
  1035                                  ;Oct:		.ascii \Oct\<0>
  1036                                  ;Nov:		.ascii \Nov\<0>
  1037                                  ;Dec:		.ascii \Dec;; ---------------------------------------------------------------------------
  1039                                  ;
  1040                                  ;fopen:					
  1041                                  ;		mov	R1, -(SP)
  1042                                  ;		mov	(R5)+, R1
  1043                                  ;		mov	R0, fnameptr
  1044                                  ;		trap	5
  1045                                  ;; ---------------------------------------------------------------------------
  1046                                  ;fnameptr:	.word 40000		
  1047                                  ;		.word 0
  1048                                  ;; ---------------------------------------------------------------------------
  1049                                  ;		bcs	fopen_err
  1050                                  ;		mov	R0, (R1)+
  1051                                  ;		clr	(R1)+
  1052                                  ;		mov	(SP)+, R1
  1053                                  ;		rts	R5
  1054                                  ;; ---------------------------------------------------------------------------
  1055                                  ;
  1056                                  ;fopen_err:				
  1057                                  ;		mov	#-1, @R1
  1058                                  ;		mov	(SP)+, R1
  1059                                  ;		sec
  1060                                  ;		rts	R5
  1061                                  ;; ---------------------------------------------------------------------------
  1062                                  ;		mov	@R5, fbuf
  1063                                  ;		mov	(R5)+, word_42072
  1064                                  ;		jsr	R5, getc
  1065                                  ;; ---------------------------------------------------------------------------
  1066                                  ;word_42072:	.word 40000		
  1067                                  ;; ---------------------------------------------------------------------------
  1068                                  ;		bcc	getw
  1069                                  ;		rts	R5
  1070                                  ;; ---------------------------------------------------------------------------
  1071                                  ;
  1072                                  ;getw:					
  1073                                  ;		mov	R0, -(SP)
  1074                                  ;		jsr	R5, getc
  1075                                  ;; ---------------------------------------------------------------------------
  1076                                  ;fbuf:		.word 40000		
  1077                                  ;; ---------------------------------------------------------------------------
  1078                                  ;		swab	R0
  1079                                  ;		bis	(SP)+, R0
  1080                                  ;		rts	R5
  1081                                  ;; ---------------------------------------------------------------------------
  1082                                  ;
  1083                                  ;getc:					
  1084                                  ;					
  1085                                  ;		mov	R1, -(SP)
  1086                                  ;		mov	(R5)+, R1
  1087                                  ;		dec	2(R1)
  1088                                  ;		bge	getcbuf
  1089                                  ;		mov	R1, R0
  1090                                  ;		add	#6, R0
  1091                                  ;		mov	R0, bufoff
  1092                                  ;		mov	R0, 4(R1)
  1093                                  ;		mov	@R1, R0
  1094                                  ;		trap	3
  1095                                  ;; ---------------------------------------------------------------------------
  1096                                  ;bufoff:	.word 40000		
  1097                                  ;		.word 128.
  1098                                  ;; ---------------------------------------------------------------------------
  1099                                  ;		bcs	getw_err
  1100                                  ;		tst	R0
  1101                                  ;		bne	getw_ok
  1102                                  ;
  1103                                  ;getw_err:				
  1104                                  ;		mov	(SP)+, R1
  1105                                  ;		sec
  1106                                  ;		rts	R5
  1107                                  ;; ---------------------------------------------------------------------------
  1108                                  ;
  1109                                  ;getw_ok:				
  1110                                  ;		dec	R0
  1111                                  ;		mov	R0, 2(R1)
  1112                                  ;
  1113                                  ;getcbuf:				
  1114                                  ;		clr	R0
  1115                                  ;		bisb	@4(R1),	R0
  1116                                  ;		inc	4(R1)
  1117                                  ;		mov	(SP)+, R1
  1118                                  ;		rts	R5
  1119                                  ;; ---------------------------------------------------------------------------
  1120                                  ;
  1121                                  ;; end of 'RAM'
  1122                                  ;
  1123                                  ;		.END
