2017-10-16 15:41:48 +00:00
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NEW
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2019-04-10 07:45:09 +00:00
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AUTO 3,1
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2017-10-16 15:41:48 +00:00
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.LIST OFF
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.OP 65C02
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.OR $2000
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2019-04-10 07:45:09 +00:00
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.TF ROOT/UNPAK
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2017-10-16 15:41:48 +00:00
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*--------------------------------------
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2018-07-23 15:28:42 +00:00
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.INB INC/MACROS.I
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.INB INC/A2OSX.I
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.INB INC/LIBPAK.I
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2017-10-16 15:41:48 +00:00
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*--------------------------------------
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2018-02-09 16:02:47 +00:00
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ZPPakHdrPtr .EQ ZPBIN
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ZPPakDataPtr .EQ ZPBIN+2
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ZPPakSrcPtr .EQ ZPBIN+4
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*--------------------------------------
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UNPAK.Mask .EQ ZPBIN+8
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UNPAK.LastByte .EQ ZPBIN+9
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UNPAK.Cnt .EQ ZPBIN+10
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UNPAK.Ofs .EQ ZPBIN+12
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UNPAK.BLOfs .EQ ZPBIN+14
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*--------------------------------------
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2017-10-16 15:41:48 +00:00
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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
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.DA CS.END-CS.START CS
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.DA DS.END-DS.START DS
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.DA #64 SS
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2018-02-09 16:02:47 +00:00
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.DA #16 ZP
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2017-10-16 15:41:48 +00:00
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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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2019-09-20 15:15:06 +00:00
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L.MSG.USAGE .DA MSG.USAGE
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L.MSG.DEBUG .DA MSG.DEBUG
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2018-02-09 16:02:47 +00:00
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L.MSG.UnpakErr .DA MSG.UnpakErr
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L.MSG.DEBUG.S3 .DA MSG.DEBUG.S3
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2017-10-16 15:41:48 +00:00
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.DA 0
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*--------------------------------------
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2019-09-20 15:15:06 +00:00
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CS.INIT clc
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rts
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2018-02-05 16:25:25 +00:00
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*--------------------------------------
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CS.RUN ldy #S.PS.ARGC
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lda (pPs),y
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bne CS.RUN.Pak
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2019-09-20 15:15:06 +00:00
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>PUSHBI 0
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>LDYA L.MSG.USAGE
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>SYSCALL printf
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lda #E.SYN
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sec
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rts
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*--------------------------------------
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.8 sec
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2018-02-05 16:25:25 +00:00
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.9 rts
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.1 >PUSHW.G PAK.Stat+S.PAKSTAT.STORE
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>PUSHW.G PAK.Stat+S.PAKSTAT.S4
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>PUSHW.G PAK.Stat+S.PAKSTAT.S3
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>PUSHW.G PAK.Stat+S.PAKSTAT.REP
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>PUSHW.G PAK.Stat+S.PAKSTAT.BL
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2018-02-08 16:39:56 +00:00
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>PUSHW.G PAK.Stat+S.PAKSTAT.PASS2
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>PUSHW.G PAK.Stat+S.PAKSTAT.PASS1
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2018-02-05 16:25:25 +00:00
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>PUSHW.G PAK.FileSize
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2018-08-23 15:16:20 +00:00
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>PUSHBI 16
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2019-09-20 15:15:06 +00:00
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>LDYA L.MSG.DEBUG
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2018-06-21 15:12:10 +00:00
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>SYSCALL printf
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2018-02-09 16:02:47 +00:00
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*--------------------------------------
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2019-09-20 15:15:06 +00:00
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* Y,A = Ptr to Shunk Header:
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* +0 : Flags
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* 10000000 : LZ8 encoded, 1 byte (ESC) follow
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* 01000000 : BS
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*--------------------------------------
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2018-02-09 16:02:47 +00:00
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CS.RUN.Unpak lda ZPPakHdrPtr
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clc
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adc #S.PAKSTAT
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sta ZPPakDataPtr
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lda ZPPakHdrPtr+1
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adc /S.PAKSTAT
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sta ZPPakDataPtr+1
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lda (ZPPakHdrPtr)
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eor #$ff
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sta UNPAK.Cnt
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2018-02-05 16:25:25 +00:00
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2018-02-09 16:02:47 +00:00
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ldy #1
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lda (ZPPakHdrPtr),y
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eor #$ff
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sta UNPAK.Cnt+1
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lda #$80
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sta UNPAK.Mask
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>LDA.G PAK.hFileBuf
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2018-07-18 15:30:42 +00:00
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>SYSCALL GetMemPtr
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2018-02-09 16:02:47 +00:00
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>STYA ZPPakSrcPtr
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stz UNPAK.Ofs
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stz UNPAK.Ofs+1
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.1 inc UNPAK.Cnt
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bne .2
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inc UNPAK.Cnt+1
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bne .2
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lda #0
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sec
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rts
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.2 lda #'>'
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2018-07-18 15:30:42 +00:00
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>SYSCALL PutChar
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2018-02-09 16:02:47 +00:00
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jsr CS.RUN.UnpakGetBitInC
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bcs .3
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*--------------------------------------
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* SHORT3
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ldx #3
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jsr CS.RUN.UnpakGetXBitInA
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clc
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adc #S.PAKHDR.SHORT3
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tay
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lda (ZPPakHdrPtr),y
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sta UNPAK.LastByte
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jsr DEBUG.S3
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jsr CS.RUN.UnpakCmpA
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bcs .9
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bra .1
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.3 jsr CS.RUN.UnpakGetBitInC
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bcs .4
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*--------------------------------------
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* SHORT4
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ldx #4
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jsr CS.RUN.UnpakGetXBitInA
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clc
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adc #S.PAKHDR.SHORT4
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tay
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lda (ZPPakHdrPtr),y
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sta UNPAK.LastByte
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jsr CS.RUN.UnpakCmpA
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bcs .9
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bra .1
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.4 jsr CS.RUN.UnpakGetBitInC
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bcs .5
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*--------------------------------------
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* REPn
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ldx #4
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jsr CS.RUN.UnpakGetXBitInA
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tay
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tax
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lda UNPAK.LastByte
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.41 jsr CS.RUN.UnpakCmpA
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bcs .9
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dey
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bne .41
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.42 txa
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clc
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adc UNPAK.Cnt
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sta UNPAK.Cnt
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bcc .2
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inc UNPAK.Cnt+1
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bra .2
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.5 jsr CS.RUN.UnpakGetBitInC
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bcs .6
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*--------------------------------------
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* BACKLINK
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ldx #4
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jsr CS.RUN.UnpakGetXBitInA
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sta UNPAK.BLOfs+1
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jsr CS.RUN.UnpakGetByteInA
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sta UNPAK.BLOfs
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jsr CS.RUN.UnpakGetByteInA
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tax
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tay
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.51
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bra .42
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*--------------------------------------
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* STOREn
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.6 ldx #4
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jsr CS.RUN.UnpakGetXBitInA
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tay
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tax
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.61 jsr CS.RUN.UnpakGetByteInA
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dey
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bne .61
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sta UNPAK.LastByte
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bra .42
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.9 >PUSHW UNPAK.Ofs
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2018-08-23 15:16:20 +00:00
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>PUSHBI 2
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2018-02-09 16:02:47 +00:00
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>LDYA L.MSG.UnpakErr
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2018-06-21 15:12:10 +00:00
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>SYSCALL printf
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2018-02-09 16:02:47 +00:00
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2018-02-05 16:25:25 +00:00
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lda #0
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sec
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2018-02-09 16:02:47 +00:00
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rts
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*--------------------------------------
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CS.RUN.UnpakGetByteInA
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ldx #8
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*--------------------------------------
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CS.RUN.UnpakGetXBitInA
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lda #0
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.1 jsr CS.RUN.UnpakGetBitInC
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rol
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dex
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bne .1
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rts
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*--------------------------------------
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CS.RUN.UnpakGetBitInC
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pha
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clc
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lda (ZPPakDataPtr)
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and UNPAK.Mask
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beq .1
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sec
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.1 php
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lsr UNPAK.Mask
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bne .8
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lda #$80
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sta UNPAK.Mask
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inc ZPPakDataPtr
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bne .8
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inc ZPPakDataPtr+1
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.8 plp
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pla
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rts
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*--------------------------------------
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CS.RUN.UnpakCmpA
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cmp (ZPPakSrcPtr)
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bne .9
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inc ZPPakSrcPtr
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bne .1
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inc ZPPakSrcPtr+1
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.1 inc UNPAK.Ofs
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bne .8
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inc UNPAK.Ofs+1
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.8 clc
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rts
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.9 sec
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rts
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*--------------------------------------
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DEBUG.S3 pha
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phx
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phy
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>PUSHA
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2018-08-23 15:16:20 +00:00
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>PUSHBI 1
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2018-02-09 16:02:47 +00:00
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>LDYA L.MSG.DEBUG.S3
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2018-06-21 15:12:10 +00:00
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>SYSCALL printf
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2018-02-09 16:02:47 +00:00
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ply
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plx
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pla
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2017-10-16 15:41:48 +00:00
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rts
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lda #0
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sec
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2017-10-27 14:56:46 +00:00
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rts
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2017-10-16 15:41:48 +00:00
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*--------------------------------------
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CS.DOEVENT sec
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rts
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*--------------------------------------
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2018-02-05 16:25:25 +00:00
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CS.QUIT >LDA.G PAK.hFileName
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beq .1
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2018-07-18 15:30:42 +00:00
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>SYSCALL FreeMem
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2018-02-05 16:25:25 +00:00
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.1 >LDA.G PAK.hFileBuf
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beq .2
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2018-07-18 15:30:42 +00:00
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>SYSCALL FreeMem
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2018-02-05 16:25:25 +00:00
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.2 >LDA.G PAK.hOutBuf
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beq .8
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2018-07-18 15:30:42 +00:00
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>SYSCALL FreeMem
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2018-02-05 16:25:25 +00:00
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2019-09-20 15:15:06 +00:00
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.8 clc
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2017-10-16 15:41:48 +00:00
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rts
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*--------------------------------------
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CS.END
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2019-09-20 15:15:06 +00:00
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MSG.USAGE .AS "Usage : UNPAK Archive [DstDir]\r\n"
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2018-08-23 15:16:20 +00:00
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*--------------------------------------
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2019-09-20 15:15:06 +00:00
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MSG.DEBUG .AS "Src Length : %D\r\n"
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2018-02-08 16:39:56 +00:00
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.AS "Pass #1 : %D\r\n"
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.AS "Pass #2 : %D\r\n"
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2018-02-05 16:25:25 +00:00
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.AS "BL Count : %D\r\n"
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.AS "REP Count : %D\r\n"
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.AS "S3 Count : %D\r\n"
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.AS "S4 Count : %D\r\n"
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.AZ "STO Count : %D\r\n"
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2018-02-09 16:02:47 +00:00
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MSG.UnpakErr .AZ "UnPak Error at Offset : %H\r\n"
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MSG.DEBUG.S3 .AZ "S3:%h\r\n"
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2017-10-16 15:41:48 +00:00
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*--------------------------------------
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|
.DUMMY
|
|
|
|
|
.OR 0
|
|
|
|
|
DS.START
|
2018-02-05 16:25:25 +00:00
|
|
|
|
PAK.hFileName .BS 1
|
|
|
|
|
PAK.FileSize .BS 2
|
|
|
|
|
PAK.hFileBuf .BS 1
|
|
|
|
|
PAK.hOutBuf .BS 1
|
|
|
|
|
PAK.Stat .BS S.PAKSTAT
|
2017-10-16 15:41:48 +00:00
|
|
|
|
DS.END
|
|
|
|
|
.ED
|
|
|
|
|
*--------------------------------------
|
|
|
|
|
MAN
|
2019-04-10 07:45:09 +00:00
|
|
|
|
SAVE BIN/UNPAK.S
|
2017-10-16 15:41:48 +00:00
|
|
|
|
ASM
|