mirror of
https://github.com/cc65/cc65.git
synced 2024-11-03 10:07:02 +00:00
39 lines
778 B
ArmAsm
39 lines
778 B
ArmAsm
|
|
;
|
|
; Maciej 'YTM/Elysium' Witkowiak
|
|
;
|
|
; 27.10.2001, 23.12.2002
|
|
|
|
; unsigned char cursor (unsigned char onoff);
|
|
|
|
.exportzp cursor_x, cursor_y, cursor_flag
|
|
.exportzp cursor_c, cursor_r
|
|
.export _cursor
|
|
.import update_cursor
|
|
.include "../inc/jumptab.inc"
|
|
.include "../inc/geossym.inc"
|
|
|
|
_cursor:
|
|
|
|
tay ; onoff into Y
|
|
ldx #0 ; High byte of result
|
|
lda cursor_flag ; Get old value
|
|
pha
|
|
sty cursor_flag ; Set new value
|
|
tya
|
|
beq L1
|
|
lda curHeight ; prepare cursor
|
|
jsr InitTextPrompt
|
|
jsr update_cursor ; place it on screen
|
|
L1: pla
|
|
rts
|
|
|
|
.zeropage
|
|
|
|
cursor_x: .res 2 ; Cursor column (word)
|
|
cursor_y: .res 1 ; Cursor row
|
|
cursor_flag: .res 1 ; Cursor on/off (0-off)
|
|
|
|
cursor_c: .res 1 ; Cursor column (0-39/79)
|
|
cursor_r: .res 1 ; Cursor row (0-24)
|