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+--- Thread: Hiding the cursor (/thread-478.html)
Hiding the cursor - Under4Mhz - 06-05-2022
How do I hide the cursor?
It's kind of distracting during game play.
RE: Hiding the cursor - ChickenMan - 06-05-2022
Try a call to A78Eh (42925).
RE: Hiding the cursor - someone - 06-05-2022
Or reprogram the CRTC so that the cursor is off the screen or blank.
This removes any reliance upon ROM calls.
The Synertek R6545 datasheet explains it all.
RE: Hiding the cursor - Under4Mhz - 06-05-2022
Thanks, I didn't realise it used a specific chip for its crt functions
The below code works to hide the cursor, if avoiding rom calls
Code:
void vdu_cursor_hide() {
__asm
ld b, #0xff
ld c, #0x0d
ld a, #14
out (#0x0c),a
out (c),b
ld a, #15
out (#0x0c),a
out (c),b
__endasm;
}The CRT datasheet can be found at:
https://datasheetspdf.com/datasheet/R6545.html