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37 lines
637 B
ArmAsm
37 lines
637 B
ArmAsm
;
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; Ullrich von Bassewitz, 06.08.1998
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;
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; void cputsxy (unsigned char x, unsigned char y, char* s);
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; void cputs (char* s);
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;
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.export _cputsxy, _cputs
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.import popa, _gotoxy, _cputc
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.importzp ptr1, tmp1
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_cputsxy:
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sta ptr1 ; Save s for later
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stx ptr1+1
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jsr popa ; Get Y
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jsr _gotoxy ; Set cursor, pop x
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jmp L0 ; Same as cputs...
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_cputs: sta ptr1 ; Save s
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stx ptr1+1
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L0: ldy #0
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L1: lda (ptr1),y
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beq L9 ; Jump if done
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iny
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sty tmp1 ; Save offset
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jsr _cputc ; Output char, advance cursor
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ldy tmp1 ; Get offset
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bne L1 ; Next char
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inc ptr1+1 ; Bump high byte
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bne L1
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; Done
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L9: rts
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