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cc65/libsrc/osic1p/gotoxy.s
Oliver Schmidt 13482984ca Introduced internal gotoxy that pops both parameters.
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.
2016-06-05 14:58:38 +02:00

21 lines
492 B
ArmAsm

;
; copied from CBM implementation
;
; originally by:
; Ullrich von Bassewitz, 06.08.1998
;
; void gotoxy (unsigned char x, unsigned char y);
;
.export gotoxy, _gotoxy
.import popa, plot
.include "extzp.inc"
gotoxy:
jsr popa ; Get Y
_gotoxy:
sta CURS_Y ; Set Y
jsr popa ; Get X
sta CURS_X ; Set X
jmp plot ; Set the cursor position