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cc65/libsrc/tgi/tgi_setpixel.s

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;
; Ullrich von Bassewitz, 21.06.2002
;
; void __fastcall__ tgi_setpixel (int x, int y);
; /* Plot a point in the current drawing color */
.include "tgi-kernel.inc"
.import popax
.importzp ptr1, ptr2
.export _tgi_setpixel
_tgi_setpixel:
sta ptr2 ; Get the coordinates
stx ptr2+1
jsr popax
sta ptr1
stx ptr1+1
jmp tgi_setpixel ; Call the driver