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About all CONIO functions offering a <...>xy variant call popa _gotoxy By providing an internal gotoxy variant that starts with a popa all those CONIO function can be shortened by 3 bytes. As soon as program calls more than one CONIO function this means an overall code size reduction.
21 lines
483 B
ArmAsm
21 lines
483 B
ArmAsm
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; Christian Groessler, 13-Mar-2014
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; void gotoxy (unsigned char x, unsigned char y);
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;
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.include "atari5200.inc"
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.export gotoxy, _gotoxy
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.import popa
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.import setcursor
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gotoxy:
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jsr popa ; Get Y
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_gotoxy: ; Set the cursor position
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sta ROWCRS_5200 ; Set Y
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jsr popa ; Get X
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sta COLCRS_5200 ; Set X
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jmp setcursor
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