Quote:
Originally Posted by Daedalus
SetInt 5 in itself shouldn't cause the guru, but what's likely happening is that Cls isn't completing its action in time to allow the vertical blank interrupt to work properly. I've had to work around issues with Cls (and other large fill commands like BoxF), where they wouldn't complete execution in time for the next operation on the bitmap. Normally Blitz waits for the blitter to be finished automatically before moving onto the next graphical job, but this doesn't appear to be the case for Cls, BoxF and similar commands.
Without knowing what you're running in the interrupt, it's impossible to tell, but that's my suspicion anyway.
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Hi there Daedalus, the only thing running in my interupt was a sprite update for the mouse pointer