2023-02-06 18:54:12 -05:00
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( decompressor )
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|10 @Console &vector $2 &read $1 &pad $5 &write $1 &err $1
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2023-11-14 23:30:09 -05:00
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|a0 @File &vector $2 &success $2 &stat $2 &delete $1 &append $1 &name $2 &length $2 &read $2 &write $2
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2023-02-06 18:54:12 -05:00
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|0000
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@input-size $2
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@src $30
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@dst $30
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@ptr $1
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|0100
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(
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@|vectors )
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@ready-src ( -> ) ;&await .Console/vector DEO2 BRK
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&await ( -> ) .Console/read DEI .src skey ?ready-dst BRK
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@ready-dst ( -> ) ;&await .Console/vector DEO2 BRK
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&await ( -> ) .Console/read DEI .dst skey ?on-ready BRK
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@on-ready ( -> )
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;src decompress
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2023-11-14 23:12:28 -05:00
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( ;mem pstr #0a18 DEO )
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( debug #800e DEO )
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( write )
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2023-11-14 23:30:09 -05:00
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;dst .File/name DEO2
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;mem .ptr LDZ2 SUB2 .File/length DEO2
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;mem .File/write DEO2
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2023-11-14 23:12:28 -05:00
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( halt ) #800f DEO
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2023-02-06 18:54:12 -05:00
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BRK
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@decompress ( str* -- )
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;mem .ptr STZ2
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2023-11-14 23:30:09 -05:00
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.File/name DEO2
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2023-02-06 18:54:12 -05:00
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#0001 .input-size STZ2
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&stream
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2023-11-14 23:30:09 -05:00
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.input-size LDZ2 .File/length DEO2
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2023-02-06 18:54:12 -05:00
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;&b
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2023-11-14 23:30:09 -05:00
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DUP2 .File/read DEO2
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.File/success DEI2 #0000 EQU2 ?&eof
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2023-02-06 18:54:12 -05:00
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LDA decompress/run
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2023-11-14 23:30:09 -05:00
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.File/success DEI2 ORA ?&stream
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2023-02-06 18:54:12 -05:00
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JMP2r
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2023-11-14 22:53:02 -05:00
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&eof POP2 JMP2r
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2023-02-06 18:54:12 -05:00
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&b $1
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&run ( byte -- )
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DUP #80 AND ?&dict
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( literal )
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#00 SWP INC2 !do-literal
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&dict ( byte -- )
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#7f AND
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DUP #40 AND ?&dict3
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( 1 byte )
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#00 SWP #0004 ADD2
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( offset )
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2023-11-14 23:30:09 -05:00
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;&b .File/read DEO2
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2023-02-06 18:54:12 -05:00
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;&b LDA INC
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!do-copy
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&dict3 ( byte -- )
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( hb )
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#3f AND
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( lb )
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2023-11-14 23:30:09 -05:00
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#0001 .File/length DEO2
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;&b .File/read DEO2
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2023-02-06 18:54:12 -05:00
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;&b LDA #0004 ADD2
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( offset )
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2023-11-14 23:30:09 -05:00
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;&b .File/read DEO2
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2023-02-06 18:54:12 -05:00
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;&b LDA INC
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!do-copy
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@do-copy ( length* offset -- )
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#00 SWP #0000 SWP2 SUB2 .ptr LDZ2 ADD2 STH2
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#0000
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&l
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DUP2 STH2kr ADD2 LDA do-append
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INC2 GTH2k ?&l
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POP2 POP2
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POP2r
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JMP2r
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@do-append ( byte -- )
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.ptr LDZ2 STH2k STA
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STH2r INC2 .ptr STZ2
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JMP2r
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@do-literal ( length* -- )
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2023-11-14 23:30:09 -05:00
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DUP2 .File/length DEO2
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2023-02-06 18:54:12 -05:00
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.ptr LDZ2
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2023-11-14 23:30:09 -05:00
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DUP2 .File/read DEO2
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2023-02-06 18:54:12 -05:00
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ADD2 .ptr STZ2
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JMP2r
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(
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@|stdlib )
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@pstr ( str* -- ) LDAk ?&w POP2 JMP2r &w LDAk #18 DEO INC2 LDAk ?&w POP2 JMP2r
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@skey ( key buf -- proc ) OVR #21 LTH ?&eval #00 SWP sput #00 JMP2r &eval POP2 #01 JMP2r
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@scap ( str* -- end* ) LDAk ?&w JMP2r &w INC2 LDAk ?&w JMP2r
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@sput ( chr str* -- ) scap INC2k #00 ROT ROT STA STA JMP2r
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@mem
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