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cc65/libsrc/c64/soft80_cvline.s
2015-09-27 18:12:25 +02:00

29 lines
885 B
ArmAsm

;
; void cvlinexy (unsigned char x, unsigned char y, unsigned char length);
; void cvline (unsigned char length);
;
.export soft80_cvline, soft80_cvlinexy
.import popa, _gotoxy, putchar, newline ; CHECK/FIX
.importzp tmp1
soft80_cvlinexy:
pha ; Save the length
jsr popa ; Get y
jsr _gotoxy ; Call this one, will pop params
pla ; Restore the length and run into soft80_cvlinexy
soft80_cvline:
cmp #0 ; Is the length zero?
beq L9 ; Jump if done
sta tmp1
L1: lda #125 ; Vertical bar
jsr putchar ; Write, no cursor advance
jsr newline ; Advance cursor to next line
dec tmp1
bne L1
L9: rts