2014-04-25 01:02:44 +00:00
|
|
|
;
|
|
|
|
|
; adapted from Atari version
|
|
|
|
|
; Christian Groessler, 2014
|
|
|
|
|
;
|
|
|
|
|
; void cputcxy (unsigned char x, unsigned char y, char c);
|
|
|
|
|
; void cputc (char c);
|
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
.include "atari5200.inc"
|
|
|
|
|
|
|
|
|
|
.export _cputcxy, _cputc
|
|
|
|
|
.export plot, cputdirect, putchar
|
|
|
|
|
.import popa, _gotoxy, mul20
|
|
|
|
|
.importzp ptr4
|
|
|
|
|
.import setcursor
|
|
|
|
|
|
2014-05-28 21:39:31 +00:00
|
|
|
.constructor screen_setup, 26
|
|
|
|
|
.import screen_setup_20x24
|
|
|
|
|
screen_setup = screen_setup_20x24
|
2014-04-25 01:02:44 +00:00
|
|
|
|
|
|
|
|
|
|
|
|
|
_cputcxy:
|
|
|
|
|
pha ; Save C
|
|
|
|
|
jsr popa ; Get Y
|
|
|
|
|
jsr _gotoxy ; Set cursor, drop x
|
|
|
|
|
pla ; Restore C
|
|
|
|
|
|
|
|
|
|
_cputc:
|
|
|
|
|
cmp #$0D ; CR
|
|
|
|
|
bne L4
|
|
|
|
|
lda #0
|
|
|
|
|
sta COLCRS_5200
|
|
|
|
|
beq plot ; return
|
|
|
|
|
|
|
|
|
|
L4: cmp #$0A ; LF
|
|
|
|
|
beq newline
|
|
|
|
|
cmp #ATEOL ; Atari-EOL?
|
|
|
|
|
beq newline
|
|
|
|
|
|
|
|
|
|
tay
|
|
|
|
|
rol a
|
|
|
|
|
rol a
|
|
|
|
|
rol a
|
|
|
|
|
rol a
|
|
|
|
|
and #3
|
|
|
|
|
tax
|
|
|
|
|
tya
|
|
|
|
|
and #$9f
|
|
|
|
|
ora ataint,x
|
|
|
|
|
|
|
|
|
|
cputdirect: ; accepts screen code
|
|
|
|
|
jsr putchar
|
|
|
|
|
|
|
|
|
|
; advance cursor
|
|
|
|
|
inc COLCRS_5200
|
|
|
|
|
lda COLCRS_5200
|
2014-05-16 00:10:19 +00:00
|
|
|
cmp #20
|
2014-04-25 01:02:44 +00:00
|
|
|
bcc plot
|
|
|
|
|
lda #0
|
|
|
|
|
sta COLCRS_5200
|
|
|
|
|
|
|
|
|
|
.export newline
|
|
|
|
|
newline:
|
|
|
|
|
inc ROWCRS_5200
|
|
|
|
|
lda ROWCRS_5200
|
|
|
|
|
cmp #24
|
|
|
|
|
bne plot
|
|
|
|
|
lda #0
|
|
|
|
|
sta ROWCRS_5200
|
|
|
|
|
plot: jsr setcursor
|
|
|
|
|
ldy COLCRS_5200
|
|
|
|
|
ldx ROWCRS_5200
|
|
|
|
|
rts
|
|
|
|
|
|
|
|
|
|
putchar:
|
|
|
|
|
pha ; save char
|
|
|
|
|
|
|
|
|
|
lda ROWCRS_5200
|
|
|
|
|
jsr mul20 ; destroys tmp4
|
|
|
|
|
clc
|
|
|
|
|
adc SAVMSC ; add start of screen memory
|
|
|
|
|
sta ptr4
|
|
|
|
|
txa
|
|
|
|
|
adc SAVMSC+1
|
|
|
|
|
sta ptr4+1
|
|
|
|
|
pla ; get char again
|
|
|
|
|
|
|
|
|
|
ldy COLCRS_5200
|
|
|
|
|
sta (ptr4),y
|
|
|
|
|
jmp setcursor
|
|
|
|
|
|
|
|
|
|
.rodata
|
|
|
|
|
ataint: .byte 64,0,32,96
|
|
|
|
|
|
