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Old 12 October 2016, 18:32   #221
Toni Wilen
WinUAE developer
 
Join Date: Aug 2001
Location: Hämeenlinna/Finland
Age: 49
Posts: 26,506
Quote:
Originally Posted by NorthWay View Post
Thx. (I'm (still/again) trying to do a Gauntlet style split for a right hand side info panel and I think the numbers add up for it being possible.)

When you increase bplcon1 scroll delay values during active display, what is shown in the "gap" that you create? Is it DFF180, last pixel stretch, pixels repeated, or something else?
(Yeah, I can't wait to get my 4000 back so I can test stuff like this...)
Zero bits. Check also http://eab.abime.net/showthread.php?t=71437

Quote:
Do the Amiga chips have any internal logic that behaves in a similar fashion to the Atari ST chips (see for example the talk here [ Show youtube player ]) so that they can be manipulated to do be "confused" and do things they weren't intended to?
(Basically using strict timing to force unintended internal states from my understanding.)
AFAIK only blitter can get confused. (by modifying BLTCON0 when blitter is active)

EDIT: and it is possible to force bitplane dma overrun, causing refresh cycle conflicts that messes up graphics.

Last edited by Toni Wilen; 12 October 2016 at 18:53.
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