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18 lines
362 B
Plaintext
18 lines
362 B
Plaintext
;Screen Control Assembly Lanuage Routines for Apple 1
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;Clear the Screen
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CLRSCR: RTS ;Do Nothing (Drop to RTS)
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;Move Cursor to Specified Coordinates
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SETPOS EQU CLRSCR ;No Action
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;Get Cursor Position
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GETPOS: LDA #$FF ;Return Error
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TAY
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RTS
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;Get Screen Size
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GETSIZ: LDA #40 ;40 Columns
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LDY #24 ;24 Lines
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RTS
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