mirror of
https://github.com/cc65/cc65.git
synced 2024-10-31 20:06:11 +00:00
53dd513176
which included commits to RCS files with non-trunk default branches. git-svn-id: svn://svn.cc65.org/cc65/trunk@3 b7a2c559-68d2-44c3-8de9-860c34a00d81
86 lines
1.1 KiB
ArmAsm
86 lines
1.1 KiB
ArmAsm
;
|
|
; Ullrich von Bassewitz, 06.08.1998
|
|
;
|
|
; void cputcxy (unsigned char x, unsigned char y, char c);
|
|
; void cputc (char c);
|
|
;
|
|
|
|
.export _cputcxy, _cputc
|
|
.export _gotoxy, cputdirect
|
|
.export newline, putchar
|
|
|
|
.import popa
|
|
|
|
.include "apple2.inc"
|
|
|
|
; Plot a character - also used as internal function
|
|
|
|
_cputcxy:
|
|
pha ; Save C
|
|
jsr popa ; Get Y
|
|
jsr _gotoxy
|
|
pla ; Restore C
|
|
|
|
_cputc:
|
|
cmp #$0D ; Test for \r = carrage return
|
|
bne L1
|
|
lda #$00 ; Goto left edge of screen
|
|
sta CH
|
|
rts ; That's all we do
|
|
L1:
|
|
cmp #$0A ; Test for \n = line feed
|
|
beq newline
|
|
|
|
cputdirect:
|
|
jsr putchar
|
|
;; Bump to next column
|
|
inc CH
|
|
lda CH
|
|
cmp MAX_X
|
|
bne return
|
|
lda #$00
|
|
sta CH
|
|
return:
|
|
rts
|
|
|
|
putchar:
|
|
ora #$80 ; Turn on high bit
|
|
and TEXTTYP ; Apply normal, inverse, flash
|
|
ldy CH
|
|
ldx RD80COL ; In 80 column mode?
|
|
bpl col40 ; No, in 40 cols
|
|
pha
|
|
tya
|
|
lsr ; Div by 2
|
|
tay
|
|
pla
|
|
bcs col40 ; odd cols go in 40 col memory
|
|
sta PG2ON
|
|
col40: sta (BASL),Y
|
|
sta PG2OFF
|
|
rts
|
|
|
|
newline:
|
|
lda CH
|
|
pha
|
|
inc CV
|
|
lda CV
|
|
cmp MAX_Y
|
|
bne L2
|
|
lda #$00
|
|
sta CV
|
|
L2:
|
|
jsr VTABZ
|
|
pla
|
|
sta CH
|
|
rts
|
|
|
|
_gotoxy:
|
|
sta CV ; Store Y
|
|
jsr VTABZ
|
|
jsr popa ; Get X
|
|
sta CH ; Store X
|
|
rts
|
|
|
|
|