mirror of
https://github.com/cc65/cc65.git
synced 2024-12-26 08:32:00 +00:00
35 lines
983 B
ArmAsm
35 lines
983 B
ArmAsm
;
|
|
; 2020-04-30, Greg King
|
|
;
|
|
; unsigned char cpeekcolor (void);
|
|
; /* Return the colors from the current cursor position. */
|
|
;
|
|
|
|
.export _cpeekcolor
|
|
|
|
.include "cx16.inc"
|
|
|
|
|
|
_cpeekcolor:
|
|
php
|
|
lda CURS_FLAG ; is the cursor currently off?
|
|
bne @L1
|
|
sei ; don't let cursor blinking interfere
|
|
ldx CURS_STATE ; is cursor currently displayed?
|
|
beq @L1 ; jump if not
|
|
lda CURS_COLOR ; get color under cursor
|
|
bra @L2
|
|
|
|
@L1: stz VERA::CTRL ; use port 0
|
|
lda CURS_Y
|
|
sta VERA::ADDR+1 ; set row number
|
|
stz VERA::ADDR+2
|
|
lda CURS_X ; get character column
|
|
sec ; color attribute is second byte
|
|
rol a
|
|
sta VERA::ADDR
|
|
lda VERA::DATA0 ; get color of character
|
|
@L2: plp
|
|
ldx #>$0000
|
|
rts
|