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Added chline and cvline implementation from CBM implementation.

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This commit is contained in:
Stephan Mühlstrasser 2014-11-29 22:13:07 +01:00
parent 67707f342d
commit 9b9622d09a
2 changed files with 61 additions and 0 deletions
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29
libsrc/c1p/chline.s Normal file
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;
; based on CBM implementation
;
; originally by:
; Ullrich von Bassewitz, 08.08.1998
;
; void chlinexy (unsigned char x, unsigned char y, unsigned char length);
; void chline (unsigned char length);
;
.export _chlinexy, _chline
.import popa, _gotoxy, cputdirect
.importzp tmp1
_chlinexy:
pha ; Save the length
jsr popa ; Get y
jsr _gotoxy ; Call this one, will pop params
pla ; Restore the length
_chline:
cmp #0 ; Is the length zero?
beq L9 ; Jump if done
sta tmp1
L1: lda #$94 ; Horizontal line, screen code
jsr cputdirect ; Direct output
dec tmp1
bne L1
L9: rts

32
libsrc/c1p/cvline.s Normal file
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;
; based on CBM version
; originally by:
; Ullrich von Bassewitz, 08.08.1998
;
; void cvlinexy (unsigned char x, unsigned char y, unsigned char length);
; void cvline (unsigned char length);
;
.export _cvlinexy, _cvline
.import popa, _gotoxy, putchar, newline
.importzp tmp1
_cvlinexy:
pha ; Save the length
jsr popa ; Get y
jsr _gotoxy ; Call this one, will pop params
pla ; Restore the length and run into _cvline
_cvline:
cmp #0 ; Is the length zero?
beq L9 ; Jump if done
sta tmp1
L1: lda #$95 ; Vertical bar
jsr putchar ; Write, no cursor advance
jsr newline ; Advance cursor to next line
dec tmp1
bne L1
L9: rts