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( icn_to_bmp.tal )
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( )
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( converts ICN files to BMP files. )
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( )
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( USAGE: icn_to_bmp.rom $tile-w $tile-h $in-file $out-file )
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( )
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( EXAMPLE: icn_to_bmp.rom 8 8 icon.icn icon.bmp # convert a 64x64 pixel image )
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@System [ |0f &state $1 ]
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@Console [ |18 &w $1 ]
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|a0 @File1 [ &vec $2 &ok $2 &stat $2 &del $1 &append $1 &name $2 &len $2 &r $2 &w $2 ]
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|b0 @File2 [ &vec $2 &ok $2 &stat $2 &del $1 &append $1 &name $2 &len $2 &r $2 &w $2 ]
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|0000
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@tile-w $2
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@adj-tile-w $2
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@tile-h $2
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@icn-size $2
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@in-file $2
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@out-file $2
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@row-size-bytes $2
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@adj-row-size-bytes $2
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|0100
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;after-args #0000 arg/init BRK
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( load argument parsing )
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~arg.tal
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( exit immediately )
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@exit ( -> BRK )
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#01 .System/state DEO BRK
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( write null-terminated string to stdout )
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@emit ( buf* -> )
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LITr -Console/w ( buf* [dev^] )
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&loop LDAk ?&ok POP2 POPr JMP2r ( )
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&ok LDAk STHkr DEO INC2 !&loop ( buf+1* [dev^] )
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@msg
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&wrote "wrote 20 00
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&bytes-to 20 "bytes 20 "to 20 00
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&invalid-width "Invalid 20 "tile 20 "width 00
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&invalid-height "Invalid 20 "tile 20 "height 00
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&invalid-size "Invalid 20 "size: 20 "ICN 20 "too 20 "large
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&write-error "Failed 20 "to 20 "write 20 "data 00
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&wrong-number-of-args "Wrong 20 "number 20 "of 20 "args; 20 "expected 20 "four 00
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@usage ( reason* -> )
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;usage/error emit emit ;usage/message emit !exit
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&error "ERROR: 20 00
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&message
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0a 0a "USAGE: 20 "icn_to_bmp.rom 20 "WIDTH 20 "HEIGHT 20 "ICN 20 "BMP 0a
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20 20 "WIDTH 20 "and 20 "HEIGHT 20 "are 20 "given 20 "in 20 "tiles 20 "(each 20 "tile 20 "is 20 "8x8 20 "pixels) 0a
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20 20 "maximum 20 "WIDTH/HEIGHT 20 "is 20 "255 20 "tiles 0a
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20 20 "ICN/BMP 20 "should 20 "be 20 "paths 20 "(that 20 "are 20 "readable/writable) 0a
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20 20 "maximum 20 "ICN 20 "size 20 "is 20 "49152 20 "bytes 0a
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0a 00
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@str-to-int ( s* -> n* )
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LIT2r 0000
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&loop LDAk ?&non-null POP2 STH2r JMP2r
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&non-null LDAk LIT "0 SUB DUP #09 GTH ?&bad
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LIT2r 000a MUL2r LITr 00 STH ADD2r INC2 !&loop
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&bad POP2 POP2r #0000 JMP2r
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( emit a short as a decimal )
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@emit-dec2 ( n* -> )
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LITr 00 ( n [0] )
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&read ( n [k] )
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#000a DIV2k STH2k MUL2 SUB2 STH2r INCr ( n%10 n/10 [k+1] )
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DUP2 ORA ,&read JCN
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POP2 ( top element was 0000 )
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&write ( n0 n1 ... nk [k+1] )
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NIP #30 ADD #18 DEO LITr 01 SUBr ( n0 ... n{k-1} [k] )
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STHkr ,&write JCN
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POPr JMP2r
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@after-args ( -> )
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;arg/count LDA #04 EQU ?{ ;msg/wrong-number-of-args !usage }
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#00 arg/read str-to-int .tile-w STZ2
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#01 arg/read str-to-int .tile-h STZ2
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#02 arg/read .in-file STZ2
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#03 arg/read .out-file STZ2
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.tile-w LDZ2 .tile-h LDZ2 MUL2 #30 SFT2 .icn-size STZ2
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.tile-w LDZ2 #30 SFT2 .row-size-bytes STZ2
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.tile-w LDZ2 #0008 MUL2 #001f ADD2 #0020 DIV2 #0004 MUL2 .adj-tile-w STZ2
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.adj-tile-w LDZ2 #30 SFT2 .adj-row-size-bytes STZ2
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validate
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write-header
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read-icn
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write-body
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;msg/wrote emit
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;bmp-header/total-size LDA2 SWP emit-dec2
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;msg/bytes-to emit .out-file LDZ2 emit
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#0a .Console/w DEO
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!exit
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@read-icn ( -> ok^ )
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.in-file LDZ2 .File1/name DEO2
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.icn-size LDZ2 STH2k .File1/len DEO
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;icn-dat .File1/r DEO2
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.File1/ok DEI2 STH2r EQU2 JMP2r
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@convert-tile-row ( src* -> )
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.row-size-bytes LDZ2 ( src* size* )
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OVR2 ADD2 SWP2 LIT2r =bmp-buf ( limit* src* [dst*] )
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&loop ( limit* src* [dst*] )
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DUP2 STH2kr convert-row ( limit* src* [dst*] )
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#0008 ADD2 INC2r ( limit* src+8* [dst+1*] )
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GTH2k ?&loop ( limit* src+8* [dst+1*] )
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POP2 POP2 POP2r JMP2r ( )
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@convert-row ( src* dst* -> )
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LITr -adj-tile-w LDZ2r STH2 ( src* [w* dst*] )
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#0001 SUB2 DUP2 #0008 ADD2 ( lim* src+7* [w* dst*] )
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&loop ( lim* pos* [w* dst*] )
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LDAk STH2kr STA OVR2r ADD2r ( src* pos* [w* dst+w*] ; dst<-pos )
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#0001 SUB2 LTH2k ?&loop ( src* pos-1* [w* dst+w*] )
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POP2 POP2 POP2r POP2r JMP2r ( )
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@write-tile-row ( -> ok^ )
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.adj-row-size-bytes LDZ2 STH2k .File2/len DEO2
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;bmp-buf .File2/w DEO2
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.File2/ok DEI2 STH2r EQU2 JMP2r
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@validate ( -> )
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.tile-w LDZ2 #0001 SUB2 #00ff LTH2 ?&tile-w-ok ;msg/invalid-width !usage &tile-w-ok
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.tile-h LDZ2 #0001 SUB2 #00ff LTH2 ?&tile-h-ok ;msg/invalid-height !usage &tile-h-ok
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.icn-size LDZ2 #c001 LTH2 ?&size-ok ;msg/invalid-size !usage &size-ok
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JMP2r
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( colors are provided in RGB order, written to BMP header in reverse )
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@write-color ( r^ g^ b^ addr* -> )
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STH2k STA INC2r ( ; addr+0<-b )
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STH2kr STA INC2r ( ; addr+1<-g )
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STH2r STA JMP2r ( ; addr+2<-r )
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@write-header ( -> )
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.adj-tile-w LDZ2 .tile-h LDZ2 MUL2 ( aw*h )
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#30 SFT2 #0020 ADD2 ( 32+aw*h*8 )
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SWP ;bmp-header/total-size STA2
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.tile-h LDZ2 #30 SFT2 SWP ;bmp-header/pixel-h STA2 ( )
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.tile-w LDZ2 #30 SFT2 SWP ;bmp-header/pixel-w STA2 ( )
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( these colors are specified in RGB order )
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#ff #ff #ff ;bmp-header/color0 write-color
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#00 #00 #00 ;bmp-header/color1 write-color
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.out-file LDZ2 .File2/name DEO2
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#0020 .File2/len DEO2
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;bmp-header .File2/w DEO2
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.File2/ok DEI2 #0020 EQU2 ?&ok ;msg/write-error !usage
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&ok JMP2r
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@write-body ( -> )
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;icn-dat ( dat* )
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.icn-size LDZ2 OVR2 ADD2 ( dat* dat+size* )
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.row-size-bytes LDZ2 STH2k SUB2 ( dat* dat+size-row* [row*] )
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&loop
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DUP2 convert-tile-row
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write-tile-row ?&ok2 ;msg/write-error !usage &ok2
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STH2kr SUB2 GTH2k ?&done !&loop
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&done POP2r POP2 POP2 JMP2r
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( fields marked "MOD" will be updated; others will stay the same )
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@bmp-header
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"BM ( 0: identify bitmap )
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&total-size 00 00 00 00 ( 2: total file size in bytes, includes header, MOD )
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00 00 ( 6: reserved, zero )
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00 00 ( 8: reserved, zero )
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20 00 00 00 ( 10: pixel data offset, 32 bytes )
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0c 00 00 00 ( 14: header size, 12 bytes )
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&pixel-w 00 00 ( 18: width in pixels, MOD )
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&pixel-h 00 00 ( 20: height in pixels, MOD )
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01 00 ( 22: color planes, 1 )
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01 00 ( 24: bits per pixel, 1 )
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&color0 ff ff ff ( 26: color 0, blue/green/red MOD )
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&color1 00 00 00 ( 29: color 1, blue/green/red MOD )
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( 32: start of pixel data MOD )
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@bmp-buf $7f8
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@icn-dat $c000 ( 48k )
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~d6