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cc65/libsrc/tgi/tgi_setcolor.s

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;
; Ullrich von Bassewitz, 21.06.2002
;
; void __fastcall__ tgi_setcolor (unsigned char color);
; /* Set the current drawing color */
.include "tgi-kernel.inc"
.proc _tgi_setcolor
cmp _tgi_colorcount ; Compare to available colors
bcs @L1
sta _tgi_color ; Remember the drawing color
jmp tgi_setcolor ; Call the driver
@L1: jmp tgi_inv_arg ; Invalid argument
.endproc