Amiga 500 Emulation Problems

My PC (1.6 Ghz Pentium 4, 1 GB RAM, Win2K SP4, Geforce 4Ti 4600) can't emulate a simple Amiga 500 with WinUAE. Just booting into Workbench 1.3 sets the win UAE CPU usage to about 80%, while trying to play games or demos sends things skyrocketing into the 120-140% (as based on the WinUAE status bar) range, with all the slowdown and sound choppiness that comes with that territory. My old 2 GHz laptop (which only had 512MB ram and shitty on-board graphics) would use about 20-30% with the same settings and people with much slower computers than mine seem to have no problems emulating A500. What could possibly be wrong and is it fixable?

Note that I use the "max compatability" and match a500 speed options.

[Toni Wilen]

Does disabling/adjusting sound settings help? (sound card and driver version?)

Same problem in fullscreen and windowed mode?

Yes, I have the same problems in Windowed and Fullscreen. Changing the sound output options doesn't do much, but changing the sound accuracy helps a tad (but not enough to really matter) I'm really just looking forward to the day my a2500 arrives and I no longer need to put up with all these emulation problems.

[DDNI]

Odd, with your spec you should be flying along.
I get no issues on a 1.2ghz PIII thinkpad with 512mb ram.
A500,A1200, OCS, ECS, AGA, 040, FPU, all seem fine.
Playing TFX all maxed out as I speak...

What else is running in the bacground?
What priority are you giving WINUAE?

[Rick Dangerous]

Originally Posted by madcrow

with all the slowdown and sound choppiness

I have this problem when the Disk-Drive-Speed is not 100%.

Cheers, Rick

[andreas]

Sound choppiness can be improved by tweaking the sound buffer slider. On my old Win9x OSes I needed setting "4", but now with 2k/XP, it is even making things worse (have "2" atm)

[Toni Wilen]

This problem could be caused by hyperthreading. I think there were either bios or windows CPU driver versions that had HT bug which can cause timing errors in some cases. BIOS and/or Windows driver update fixed it.

Can you send your winuaebootlog.txt? Also can you temporarily disable HT (bios setting usually)

All critical/driver updates from windowsupdate installed?

I don't have hyperthreading at all as far as I can tell. As far as background tasks, I don't have that much going on (my baseline CPU usage runs about 1%) and I can emulate 040 AGA and GFX card stuff fine with no slowdowns or anything. It's JUST A500 that seems to cause problems. At the moment, I get around the problem by using WinFellow to do my a500 emulation, but it's not quite as good and I'd really like to stick to using one program. I've attached the bootlog