Author Topic: Cv1000 slowdown accuracy tweaks  (Read 28998 times)

Offline F8L

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Re: Cv1000 slowdown accuracy tweaks
« Reply #30 on: May 13, 2024, 11:54:19 AM »
Just for clarification, should these Blitter Delay numbers be used with the "Antiquity" Blitter Timing, or the new "Accurate (Buffis)" Blitter Timing?  I am not sure if the newer "Accurate (Buffis)" Blitter Timing would change the Blitter Delay number needed, or even the CPU % for that matter.

Thank you in advance for your response and for all your hard work on this!
« Last Edit: May 13, 2024, 11:56:25 AM by F8L »

Offline barbudreadmon

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Re: Cv1000 slowdown accuracy tweaks
« Reply #31 on: May 14, 2024, 09:37:16 AM »
The blitter delay numbers are for the old inaccurate blitter timing method.
I heard the CPU% numbers are wrong too with the accurate blitter timing method.

Offline dink

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Re: Cv1000 slowdown accuracy tweaks
« Reply #32 on: May 14, 2024, 09:45:38 AM »
Hi,
There's a reason the old blitter delay is still supported: there's a bug in the new "accurate blitter timing" code that isn't very accurate.  We presented buffi (author of the new timing code) a few scenarios where the speed doesn't line up with hw, but it proved too difficult to debug the hw so deep into the game (where the problems lay)

In short, setting the blitter delay manually along with cpu is a much better option for CV-1000 super fans (hi el_rika!) :)

best regards,
- dink

Offline el_rika

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Re: Cv1000 slowdown accuracy tweaks
« Reply #33 on: May 14, 2024, 04:24:01 PM »
What they said ^

(hi dink! :D )