80 lines
1.5 KiB
Tal
80 lines
1.5 KiB
Tal
|00 @System &vector $2 &expansion $2 &wst $1 &rst $1 &metadata $2 &r $2 &g $2 &b $2 &debug $1 &state $1
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|10 @Console &vector $2 &read $1 &pad $4 &type $1 &write $1 &error $1
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|20 @Screen &vector $2 &width $2 &height $2 &auto $1 &pad $1 &x $2 &y $2 &addr $2 &pixel $1 &sprite $1
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|0000
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@id $2
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@buf $40
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|0100
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@on-reset ( -> )
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#f07f .System/r DEO2
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#f0d6 .System/g DEO2
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#f0b2 .System/b DEO2
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#0000 DUP2 .Screen/x DEO2
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.Screen/y DEO2
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;on-console .Console/vector DEO2
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#15 .Screen/auto DEO
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BRK
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@on-console ( -> )
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.Console/read DEI
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( linebreak ) DUP #0a NEQ ?{ POP parse-line BRK }
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( append ) #00 ;buf scap/ STA2
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( #010e DEO ) BRK
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@parse-line ( -- )
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;buf is-pixels ?new-pixels
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( >> )
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@new-glyph ( -- )
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.id LDZ2 #0001 SUB2 <draw-glyph>
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.id LDZ2 <phex>
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#2018 DEO
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;buf <pstr>
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#0a18 DEO
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( clean ) #0000 ;buf STA2
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.id LDZ2 INC2 .id STZ2
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#0000 ;new-pixels/row STA2
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JMP2r
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@new-pixels ( -- )
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#ff .id LDZ2 #40 SFT2 ;glyphs ADD2 [ LIT2 &row $2 ] INC2k ,&row STR2
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ADD2 STA
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( clean ) #0000 ;buf STA2
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JMP2r
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@is-pixels ( buf* -- f )
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LDA DUP [ LIT "0 ] EQU SWP [ LIT "1 ] EQU ORA JMP2r
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@<draw-glyph> ( id* -- )
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#40 SFT2 ;glyphs ADD2 .Screen/addr DEO2
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#07 .Screen/sprite DEO
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JMP2r
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(
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@|stdlib )
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@scap ( str* -- end* )
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INC2 & LDAk ?scap
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JMP2r
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@<pstr> ( str* -- )
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LDAk #18 DEO
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INC2 & LDAk ?<pstr>
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POP2 JMP2r
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@<phex> ( short* -- )
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SWP <phex>/b
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&b ( -- )
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DUP #04 SFT <phex>/c
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&c ( -- )
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#0f AND DUP #09 GTH #27 MUL ADD [ LIT "0 ] ADD #18 DEO
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JMP2r
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@glyphs
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