2021-07-04 21:09:08 +00:00
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NEW
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AUTO 3,1
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.LIST OFF
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.OP 65C02
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.OR $2000
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.TF bin/nl
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*--------------------------------------
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.INB inc/macros.i
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.INB inc/a2osx.i
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.INB inc/kernel.i
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.INB inc/mli.i
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.INB inc/mli.e.i
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*--------------------------------------
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.DUMMY
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.OR ZPBIN
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ZS.START
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ArgIndex .BS 1
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ArgPattern .BS 1
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ZPPtr1 .BS 2
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ZPBufPtr .BS 2
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hFile .BS 1
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hBuf .BS 1
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char .BS 1
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LineCount .BS 2
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bPause .BS 1
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bPipe .BS 1
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bIsTTY .BS 1
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bNewLine .BS 1
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bDummy .BS 1
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ZS.END .ED
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*--------------------------------------
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* File Header (16 Bytes)
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*--------------------------------------
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CS.START cld
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jmp (.1,x)
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.DA #$61 6502,Level 1 (65c02)
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.DA #1 BIN Layout Version 1
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.DA #0 S.PS.F.EVENT
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.DA #0
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.DA CS.END-CS.START Code Size (without Constants)
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.DA DS.END-DS.START Data Segment Size
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.DA #16 Stack Size
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.DA #ZS.END-ZS.START Zero Page Size
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.DA 0
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*--------------------------------------
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* Relocation Table
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*--------------------------------------
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.1 .DA CS.INIT
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.DA CS.RUN
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.DA CS.DOEVENT
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.DA CS.QUIT
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L.MSG.USAGE .DA MSG.USAGE
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L.MSG.CRLF .DA MSG.CRLF
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L.MSG.LINENUM .DA MSG.LINENUM
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.DA 0
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*--------------------------------------
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CS.INIT clc
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rts
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*--------------------------------------
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CS.RUN stz bPipe
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stz bIsTTY
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stz bNewLine
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inc bNewLine
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jsr CS.RUN.ISATTY
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jsr CS.RUN.CheckArgs
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bcs CS.RUN.LOOP.RTS
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stz LineCount
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stz LineCount+1
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inc LineCount
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CS.RUN.LOOP lda bPipe If reading from pipe
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bne .2 No ^C/^S handling
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ldy #S.PS.hStdIn
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lda (pPS),y
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>SYSCALL FEOF
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bcs .9 I/O Error
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tay
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bne .1 No char
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>SYSCALL GetChar
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bcs .9 I/O error
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cmp #$03 Ctrl-C
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beq .9
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cmp #$13 Ctrl-S
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bne .1
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lda bPause
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eor #$ff
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sta bPause
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bne CS.RUN.LOOP
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.1 lda bPause
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bne CS.RUN.LOOP
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.2 >SLEEP
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lda hFile
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>SYSCALL GetC
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bcs .7
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jsr CS.RUN.PRINTBYTE
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bra CS.RUN.LOOP
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.7 cmp #MLI.E.EOF
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bne .9
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.8 lda #0 Exit with no Error
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.9 sec
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CS.RUN.LOOP.RTS rts
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*--------------------------------------
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CS.RUN.CheckArgs jsr CS.RUN.NextArg
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bcs .4
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lda (ZPPtr1)
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cmp #'-'
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beq .1
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.11 lda hFile
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bne .97
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>LDYA ZPPtr1
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jsr CS.RUN.OPEN
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bcs .9
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sta hFile
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bra CS.RUN.CheckArgs
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.1 ldy #1
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lda (ZPPtr1),y
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ldx #OptionList.Cnt-1
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.2 cmp OptionList,x
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beq .3
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dex
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bpl .2
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bra .97
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.3 txa
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lsr
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beq .98
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tax
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lda #$80
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sta bDummy-1,x
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bra CS.RUN.CheckArgs
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.4 lda hFile
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bne .80
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ldy #S.PS.hStdIn
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lda (pPS),y
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tax
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2021-07-24 20:42:23 +00:00
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lda hFDs-1,x
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2021-07-04 21:09:08 +00:00
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>SYSCALL GetMemPtr
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>STYA ZPPtr1
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lda (ZPPtr1)
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cmp #S.FD.T.PIPE
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bne .97
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ldy #S.PS.hStdIn
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lda (pPS),y
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sta hFile
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inc bPipe
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.80 >LDYAI 256
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>SYSCALL GetMem
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bcs .9
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>STYA ZPBufPtr
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stx hBuf
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* clc
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.9 rts
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.97 lda #E.SYN
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.98 pha
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>PUSHW L.MSG.USAGE
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>PUSHBI 0
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>SYSCALL PrintF
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pla
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sec
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rts
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*--------------------------------------
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CS.RUN.NextArg inc ArgIndex
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lda ArgIndex
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>SYSCALL ArgV
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bcs .9
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>STYA ZPPtr1
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.9 rts
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*--------------------------------------
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CS.RUN.OPEN >PUSHYA
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>PUSHBI O.RDONLY+O.TEXT
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>PUSHBI S.FI.T.TXT
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>PUSHWZ Aux type
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>SYSCALL FOpen
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bcs .9
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sta hFile
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.9 rts
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*--------------------------------------
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CS.RUN.ISATTY ldy #S.PS.hStdOut
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lda (pPS),y
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tax
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2021-07-24 20:42:23 +00:00
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lda hFDs-1,x
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2021-07-04 21:09:08 +00:00
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>SYSCALL GetMemPtr
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>STYA ZPPtr1
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lda (ZPPtr1)
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beq .9
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inc bIsTTY
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.9 rts
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*--------------------------------------
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CS.QUIT lda hFile
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beq .1
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>SYSCALL FClose
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.1 lda hBuf
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beq .8
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>SYSCALL FreeMem
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.8 clc
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rts
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*--------------------------------------
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CS.RUN.PRINTBYTE pha
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lda bNewLine
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beq .2
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stz bNewLine
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>PUSHW L.MSG.LINENUM
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>PUSHW LineCount
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>PUSHBI 2
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>SYSCALL PrintF
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.2 pla
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pha
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>SYSCALL PutChar
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pla
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cmp #C.CR
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bne .9
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lda bIsTTY
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beq .4
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lda #C.LF
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>SYSCALL PutChar
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.4 inc bNewLine
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inc LineCount
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bne .9
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inc LineCount+1
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.9 rts
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*--------------------------------------
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CS.DOEVENT sec
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rts
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*--------------------------------------
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CS.END
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*--------------------------------------
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OptionList .AS "x"
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OptionList.Cnt .EQ *-OptionList
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*--------------------------------------
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MSG.USAGE .AS "Usage : NL <File> or CMD|NL"
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MSG.CRLF .AZ "\r\n"
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MSG.LINENUM .AZ "%5D "
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*--------------------------------------
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.DUMMY
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.OR 0
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DS.START
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DS.END .ED
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*--------------------------------------
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MAN
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SAVE usr/src/bin/nl.s
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ASM
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