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Midway Zeus 2 strange slowdown
#381891 - 04/09/19 08:35 PM
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does anyone know what happened with the zeus 2 driver ?
I can run both games, Cruis'n Exotica & The Grid, unthrottled at 300% (4.8ghz cpu) but for some reason they run at very low fps throttled even if MAME shows 100%.
I tried an older version of Mame (0.200) and they ran fine...
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Re: Midway Zeus 2 strange slowdown
[Re: Sky25]
#381893 - 04/09/19 09:38 PM
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Edit: Timing issue, not performance. I probably need to look into this sometime. It looks like the OP is saying the games are running slower than they should be.
Glad you said something here instead of MT (they are a bit picky when it comes to regressions in games marked as not working).
Edited by Hydreigon (04/09/19 09:56 PM)
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Re: Midway Zeus 2 strange slowdown
[Re: Sky25]
#381895 - 04/10/19 12:58 AM
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There have not been any major changes to the zeus2 driver in quite a while.
There has been some performance issues reported for 0.208:
https://mametesters.org/view.php?id=7275
Could you try with 0.207 and see if the issue is there.
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Re: Midway Zeus 2 strange slowdown
[Re: tedgreen]
#381897 - 04/10/19 03:35 AM
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Ok. Tested. The last version that worked right was 0.201.
The issue starts from ver. 0.202 onwards.
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Re: Midway Zeus 2 strange slowdown
[Re: Hydreigon]
#381898 - 04/10/19 03:39 AM
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Many thanks to all for your hard work.
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Re: Midway Zeus 2 strange slowdown
[Re: Sky25]
#381900 - 04/10/19 07:10 AM
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It's probably this change:
- MCFG_DEVICE_ADD("zeus2", ZEUS2, ZEUS2_VIDEO_CLOCK)
- MCFG_ZEUS2_IRQ_CB(WRITELINE(*this, midzeus2_state, zeus_irq))
+ ZEUS2(config, m_zeus, ZEUS2_VIDEO_CLOCK);
+ m_zeus->vblank_callback().set(FUNC(midzeus2_state::zeus_irq));
The irq callback was changed to a vblank_callback, probaby for a copy-paste error.
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Re: Midway Zeus 2 strange slowdown
[Re: Sky25]
#381901 - 04/10/19 08:36 AM
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> Many thanks to all for your hard work.
What hard work?
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Another irq vlbank related slowdown
[Re: Osso1]
#381903 - 04/10/19 03:13 PM
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Re: Midway Zeus 2 strange slowdown
[Re: MooglyGuy]
#381904 - 04/10/19 03:31 PM
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Re: Midway Zeus 2 strange slowdown
[Re: tedgreen]
#381905 - 04/10/19 04:40 PM
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Re: Midway Zeus 2 strange slowdown
[Re: Sky25]
#382132 - 04/25/19 03:20 PM
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Currently, 0.209, the Zeus II games have a timing related issue. In Cruis'n Exotica, attract mode runs at half speed even if MAME shows it as 100%. In game, it would run at 80-90% speed but for some reason runs above 100% when throttled (at least on my machine). Maybe on a faster pc, it will run above 100% unthrottled
Edited by Hydreigon (04/25/19 03:20 PM)
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Re: Midway Zeus 2 strange slowdown
[Re: Hydreigon]
#382136 - 04/26/19 02:48 AM
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> Currently, 0.209, the Zeus II games have a timing related issue. In Cruis'n Exotica,
> attract mode runs at half speed even if MAME shows it as 100%. In game, it would run
> at 80-90% speed but for some reason runs above 100% when throttled (at least on my
> machine). Maybe on a faster pc, it will run above 100% unthrottled
That's odd because it's the opposite of that on my computer. Attract mode appears to run at full speed in 0.209 but much more sluggish in 0.208 and eariler.
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View my gameplay videos:
Light Gun Games with Aimtrak
Trackball Games with X-Arcade Trackball
Star Wars Episode 1 Racer with Dual Throttle Controls
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Re: Midway Zeus 2 strange slowdown
[Re: DarthMarino]
#382143 - 04/26/19 03:17 PM
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> That's odd because it's the opposite of that on my computer. Attract mode appears to
> run at full speed in 0.209 but much more sluggish in 0.208 and eariler.
The slowness in attract mode happens during the gameplay sections. It doesn't exactly run sluggish in earlier versions but more of a frameskip. Maybe it depends on the video mode because I always set mine to bgfx.
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