(system.tal) Made example dynamic
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|00 @System &vector $2 &wst $1 &rst $1 &pad $4 &r $2 &g $2 &b $2 &debug $1 &halt $1
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|10 @Console &vector $2 &read $1 &pad $5 &write $1
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|0100
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;on-halt .System/vector DEO2
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( divzero ) #02 #00 DIV
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( underflow ) POP
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( overflow ) #00 &l #ffff ROT INC DUP ?&l POP
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#80 .System/halt DEO
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;on-console .Console/vector DEO2
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;dict/instruction pstr
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BRK
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@on-console ( -> )
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[ LIT2 &id =tests ] INC2k INC2 ,&id STR2 LDA2 JSR2
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BRK
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@tests
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=try-divzero
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=try-underflow
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=try-overflow
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=exit
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@try-divzero ( -- ) #02 #00 DIV JMP2r
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@try-underflow ( -- ) POP JMP2r
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@try-overflow ( -- ) #00 &l #ffff ROT INC DUP ?&l POP JMP2r
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@exit ( -- ) #0000 .Console/vector DEO2 #800f DEO BRK
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@on-halt ( addr* inst code -> )
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#00 SWP DUP ADD ;err ADD2 LDA2 pstr
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;dict/error pstr
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print-opcode
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;dict/at pstr
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phex LIT2 0a ". #18 DEO #18 DEO
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#01 .System/halt DEO
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phex LIT ". #18 DEO
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BRK
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@ -51,10 +64,12 @@ JMP2r
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JMP2r
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@pstr ( str* -- )
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&w
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LDAk #18 DEO
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INC2 LDAk ,&w JCN
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INC2 LDAk ?&w
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POP2
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JMP2r
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@err
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@ -64,12 +79,13 @@ JMP2r
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=dict/divzero
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@dict
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&error "Error, 20 "during 20 $1
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&error "error, 20 "during 20 $1
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&unknown "Unkown 20 $1
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&underflow "Underflow 20 $1
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&overflow "Overflow 20 $1
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&divzero "Division 20 "by 20 "zero 20 $1
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&at ", 20 "at 20 "# $1
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&instruction "Press 20 "enter 20 "to 20 "test 20 "each 20 "error. 0a $1
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@opcodes
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"LIT $1 "INC $1 "POP $1 "NIP $1 "SWP $1 "ROT $1 "DUP $1 "OVR $1
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