mirror of https://git.sr.ht/~rabbits/uxn
138 lines
3.5 KiB
Tal
138 lines
3.5 KiB
Tal
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( mandelbrot )
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%+ { ADD } %- { SUB } %* { MUL } %/ { DIV }
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%< { LTH } %> { GTH } %= { EQU } %! { NEQ }
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%++ { ADD2 } %-- { SUB2 } %** { MUL2 } %// { DIV2 }
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%<< { LTH2 } %>> { GTH2 } %== { EQU2 } %!! { NEQ2 }
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%AUTO-X { #01 .Screen/auto DEO }
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%NEXT-LINE { #0000 .Screen/x DEO2 .Screen/y DEI2k INC2 ROT DEO2 }
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%XMIN { #de69 } ( -8601 )
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%XMAX { #0b33 } ( 2867 )
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%YMIN { #ecc7 } ( -4915 )
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%YMAX { #1333 } ( 4915 )
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%MAXI { #20 } ( 32 )
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%DX { XMAX XMIN -- #004f // } ( (XMAX-XMIN)/79 )
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%DY { YMAX YMIN -- #0018 // } ( (YMAX-YMIN)/24 )
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%X { .x LDZ2 } %Y { .y LDZ2 }
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%X2 { .x2 LDZ2 } %Y2 { .y2 LDZ2 }
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%GTS2 { #8000 ++ SWP2 #8000 ++ << }
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%HALT { #010f DEO }
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%EMIT { #18 DEO }
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%PRINT { ;print-str JSR2 #0a EMIT }
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%DEBUG { ;print-hex/byte JSR2 #0a EMIT }
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%DEBUG2 { ;print-hex JSR2 #0a EMIT }
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|00 @System &vector $2 &wst $1 &rst $1 &eaddr $2 &ecode $1 &pad $1 &r $2 &g $2 &b $2 &debug $1 &halt $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 ( zero-page )
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@x $2 @y $2
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@x2 $2 @y2 $2
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|0100 ( -> )
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( theme )
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#048c .System/r DEO2
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#048c .System/g DEO2
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#048c .System/b DEO2
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#0280 .Screen/width DEO2 ( 640 )
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#01e0 .Screen/height DEO2 ( 480 )
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#0000 .Screen/x DEO2
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#0000 .Screen/y DEO2
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AUTO-X
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;draw-mandel JSR2
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BRK
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@draw-mandel ( -- )
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YMAX YMIN
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&ver
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DUP2 ,&y STR2
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XMAX XMIN
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&hor
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DUP2 ,&x STR2
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#0000 DUP2 DUP2 DUP2 .x STZ2 .y STZ2 .x2 STZ2 .y2 STZ2
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MAXI #00
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&loop
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X Y ;smul2 JSR2 #0b SFT2 [ LIT2 &y $2 ] ++ .y STZ2
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X2 Y2 -- [ LIT2 &x $2 ] ++ .x STZ2
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X X ;smul2 JSR2 #0c SFT2 .x2 STZ2
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Y Y ;smul2 JSR2 #0c SFT2 .y2 STZ2
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X2 Y2 ++ >> #4000 ,&end JCN
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INC GTHk ,&loop JCN
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&end
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NIP POP #03 .Screen/pixel DEO
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DX ++ OVR2 OVR2 GTS2 ;&hor JCN2
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POP2 POP2
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NEXT-LINE
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DY ++ OVR2 OVR2 GTS2 ;&ver JCN2
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POP2 POP2
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JMP2r
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@print-hex ( value* -- )
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SWP ,&byte JSR
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&byte ( byte -- )
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STHk #04 SFT ,&parse JSR #18 DEO
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STHr #0f AND ,&parse JSR #18 DEO
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JMP2r
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&parse ( byte -- char ) DUP #09 GTH ,&above JCN #30 ADD JMP2r
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&above #57 ADD JMP2r
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JMP2r
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@smul2 ( a* b* -- c* )
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OVR2 POP #80 AND #07 SFT STH
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OVR #80 AND #07 SFT STHr ADD #01 AND ,&sign STR
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#10 SFT2 #01 SFT2
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SWP2
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#10 SFT2 #01 SFT2
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MUL2
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,&sign LDR ,&flip JCN
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JMP2r
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&flip
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#0000 SWP2 --
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JMP2r
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&sign $1
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@sprites
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0000 0000 0000 0000 0000 0000 0000 0000
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0000 0018 1800 0000 0000 0000 0000 0000
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0000 183c 3c18 0000 0000 0000 0000 0000
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0018 3c7e 7e3c 1800 0000 0000 0000 0000
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183c 7eff ff7e 3c18 0000 0000 0000 0000
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3c7e ffff ffff 7e3c 0000 0000 0000 0000
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7eff ffff ffff ff7e 0000 0000 0000 0000
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ffff ffff ffff ffff 0000 0000 0000 0000
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ffff ffe7 e7ff ffff 0000 0018 1800 0000
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ffff e7c3 c3e7 ffff 0000 183c 3c18 0000
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ffe7 c381 81c3 e7ff 0018 3c7e 7e3c 1800
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e7c3 8100 0081 c3e7 183c 7eff ff7e 3c18
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c381 0000 0000 81c3 3c7e ffff ffff 7e3c
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8100 0000 0000 0081 7eff ffff ffff ff7e
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0000 0000 0000 0000 ffff ffff ffff ffff
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0000 0018 1800 0000 ffff ffff ffff ffff
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0000 183c 3c18 0000 ffff ffff ffff ffff
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0018 3c7e 7e3c 1800 ffff ffff ffff ffff
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183c 7eff ff7e 3c18 ffff ffff ffff ffff
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3c7e ffff ffff 7e3c ffff ffff ffff ffff
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7eff ffff ffff ff7e ffff ffff ffff ffff
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ffff ffff ffff ffff ffff ffff ffff ffff
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ffff ffe7 e7ff ffff ffff ffe7 e7ff ffff
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ffff e7c3 c3e7 ffff ffff e7c3 c3e7 ffff
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ffe7 c381 81c3 e7ff ffe7 c381 81c3 e7ff
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e7c3 8100 0081 c3e7 e7c3 8100 0081 c3e7
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c381 0000 0000 81c3 c381 0000 0000 81c3
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8100 0000 0000 0081 8100 0000 0000 0081
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