a1200 ham mode question

[Karlos]

By virtue of how HAM works, its possible too see some corruption to the right hand side of anything moving on the image (an effect called fringing). Good old DPaint in ham mode was a classic for this, especially the cross hairs and stuff.

However, this shouldn't affect your mouse pointer (AFAIK) since it is a hardware sprite and not rendered "into" the image, just drawn by the amiga's chipset "on the fly"...

[Karlos]

KThunder wrote:
if you have a ham mode screen up and you move the mouse around you dont see anything but the same pointer that is on workbench right?

Correct - as far as I recall (havent seen a genuine native screen in years :-( ). The pointer is a hardware sprite that is independent of the screen itself.

[Karlos]

It's a bit of a longshot, but maybe you should check your custom chips for hotspots.

A friend used to get a lot of corruption when using the dblpal modes and stuff, which was due to one of the chips getting a bit hot. We stuck a passive heatsink on it with some thermal paste and it was fine afterwards.