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Old 23 October 2019, 13:48   #6
Antiriad_UK
OCS forever!

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Join Date: Mar 2019
Location: Birmingham, UK
Posts: 210
Interesting. I'd been experimenting with a copper interrupt instead of VBlank recently but I was triggering the interrupt at the last line of bitplane display instead (like HWRM description). Most of my routines are setup as this order
- Start blitter screen clear
- big cpu tasks
- If any CPU free help blitter clear
- Some more blitter/cpu tasks interleaved as best as possible

Not sure if changing interrupt to first line of bitplane dma would help me but I'll try anything once

Agree with the blitter nasty tip. All my old code just turned blit nasty on at the start and then left it (think I read aboout that in Menace coding article and took it as gospel). Since starting coding again I'm finding it's 99% best to leave it off all the time except when doing blitwaits.
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