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cc65/libsrc/c64/soft80_cvline.s
2015-10-12 14:40:12 +02:00

34 lines
1004 B
ArmAsm

;
; Groepaz/Hitmen, 12.10.2015
;
; void cvlinexy (unsigned char x, unsigned char y, unsigned char length);
; void cvline (unsigned char length);
;
.export soft80_cvline, soft80_cvlinexy
.import popa, _gotoxy, soft80_putchar, soft80_newline
.importzp tmp1
.include "c64.inc"
.include "soft80.inc"
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 #CH_VLINE ; Vertical bar, petscii code
jsr soft80_putchar ; Write, no cursor advance
jsr soft80_newline ; Advance cursor to next line
dec tmp1
bne L1
L9: rts