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cc65/libsrc/tgi/tgi_emu_bar.s
cuz e2f95ebca5 Add tgi_horline
git-svn-id: svn://svn.cc65.org/cc65/trunk@1336 b7a2c559-68d2-44c3-8de9-860c34a00d81
2002-07-07 11:12:41 +00:00

79 lines
1.2 KiB
ArmAsm

;
; Ullrich von Bassewitz, 22.06.2002
;
; Emulation for tgi_bar.
;
.include "tgi-kernel.inc"
.importzp ptr1, ptr2, ptr3, ptr4
.export tgi_emu_bar
tgi_emu_bar:
lda ptr4
sta Y2
lda ptr4+1
sta Y2+1
lda ptr3
sta X2
lda ptr3+1
sta X2+1
lda ptr2
sta ptr4
sta Y1
lda ptr2+1
sta ptr4+1
sta Y1+1
lda ptr1
sta X1
lda ptr1+1
sta X1+1
@L1: jsr tgi_horline
lda Y1
cmp Y2
bne @L2
lda Y1
cmp Y2
beq @L4
@L2: inc Y1
bne @L3
inc Y1+1
@L3: lda Y1
sta ptr2
lda Y1+1
sta ptr2+1
lda X1
sta ptr1
lda X1+1
sta ptr1+1
lda X2
sta ptr3
lda X2+1
sta ptr3+1
jmp @L1
@L4: rts
;-----------------------------------------------------------------------------
; Data
.bss
DY: .res 2
X1: .res 2
X2: .res 2
Y1: .res 2
Y2: .res 2