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13482984ca
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.
26 lines
534 B
ArmAsm
26 lines
534 B
ArmAsm
;
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; Ullrich von Bassewitz, 06.08.1998
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;
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; void __fastcall__ gotoxy (unsigned char x, unsigned char y);
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; void __fastcall__ gotox (unsigned char x);
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;
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.export gotoxy, _gotoxy, _gotox
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.import popa, VTABZ
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.include "apple2.inc"
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gotoxy:
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jsr popa ; Get Y
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_gotoxy:
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clc
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adc WNDTOP
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sta CV ; Store Y
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jsr VTABZ
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jsr popa ; Get X
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_gotox:
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sta CH ; Store X
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rts
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