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( nametable )
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|10 @Console &vector $2 &read $1 &pad $5 &write $1 &error $1
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|a0 @File1 &vector $2 &success $2 &stat $2 &delete $1 &append $1 &name $2 &length $2 &read $2 &write $2
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|b0 @File2 &vector $2 &success $2 &stat $2 &delete $1 &append $1 &name $2 &length $2 &read $2 &write $2
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|0000
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@id $2
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@src $40
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@dst $40
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@buf $10
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@length $2
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|0100 ( -> )
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;on-console .Console/vector DEO2
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BRK
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@on-console ( -> )
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;src STH2
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( read source )
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.Console/read DEI
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DUP #20 LTH OVR #7f GTH ORA ,&end JCN
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STH2kr ;slen JSR2 #003f GTH2 ,&end JCN
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STH2r ;sput JSR2 BRK
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&end
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POP
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( prep destination )
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;src ;dst ;scpy JSR2
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;&nmt-ext ;dst ;scat JSR2
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;dst .File2/name DEO2
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STH2r ,parse-chr JSR
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( export compressed spritesheet )
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;src .File2/name DEO2
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.length LDZ2 .File2/length DEO2
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;spritesheet .File2/write DEO2
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( halt )
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#010f DEO
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BRK
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&nmt-ext ".nmt $1
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@parse-chr ( file* -- )
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.File1/name DEO2
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#0010 .File1/length DEO2
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&stream
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;buf .File1/read DEO2
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( save addr )
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#0002 .File2/length DEO2
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;buf ;add-tile JSR2 ,&addr STR2
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;&addr .File2/write DEO2
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( save color )
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#0001 .File2/length DEO2
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;&color .File2/write DEO2
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.id LDZ2k INC2 ROT STZ2
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.File1/success DEI2 ORA ,&stream JCN
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JMP2r
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&addr $2
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&color 81
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@add-tile ( tile* -- addr* )
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DUP2 ;tile-exists JSR2 DUP2 #ffff EQU2 ,&create JCN
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NIP2 JMP2r
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&create
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POP2
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( create )
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.length LDZ2 STH2k ;spritesheet ADD2 #0010 ;mcpy JSR2
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STH2kr #0010 ADD2 .length STZ2
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STH2r
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JMP2r
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@tile-exists ( tile* -- tile* )
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,&target STR2
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.length LDZ2 #0000
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&loop
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DUP2 ;spritesheet ADD2 [ LIT2 &target $2 ] ;tile-equal JSR2 #00 EQU ,&continue JCN
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NIP2 JMP2r
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&continue
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INC2 GTH2k ,&loop JCN
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POP2 POP2
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#ffff
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JMP2r
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@tile-equal ( a* b* -- flag )
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,&a STR2
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,&b STR2
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#1000
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&loop
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#00 OVRk [ LIT2 &a $2 ] ADD2 LDA
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ROT ROT [ LIT2 &b $2 ] ADD2 LDA
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EQU ,&continue JCN
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POP2 #00 JMP2r
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&continue
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INC GTHk ,&loop JCN
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POP2
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#01
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JMP2r
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( stdlib )
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@slen ( str* -- len* )
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DUP2 ,scap JSR SWP2 SUB2
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JMP2r
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@scap ( str* -- end* )
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LDAk #00 NEQ JMP JMP2r
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&while INC2 LDAk ,&while JCN
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JMP2r
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@sput ( char str* -- )
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,scap JSR STA
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JMP2r
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@scat ( src* dst* -- )
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DUP2 ,slen JSR ADD2
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@scpy ( src* dst* -- )
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STH2
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&while
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LDAk STH2kr STA INC2r
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INC2 LDAk ,&while JCN
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POP2
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#00 STH2r STA
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JMP2r
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@mcpy ( src* dst* len* -- )
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SWP2 STH2
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OVR2 ADD2 SWP2
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&loop
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LDAk STH2kr STA INC2r
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INC2 GTH2k ,&loop JCN
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POP2 POP2
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POP2r
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JMP2r
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@spritesheet
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