68k speed and sound lag through RuninUAE

[paul1981]

Hi,
 
 I'm experimenting with Amiga OS 4.1FE Classic under Amiga Forever.  It works really well except for games running via RuninUAE under 4.1 - the speed is a bit slow and sound is laggy.  Any ideas anyone?  I am using Super Stardust and The Chaos Engine for testing purposes.
 
 Liam

Isn't this running an emulator in an emulator (x86 > ppc > 68k)? Or have I got the wrong end of the stick? If this was WinUAE just emulating  68k Amiga then I'd increase the sound buffers (with the side affect of increased audio lag). If there are no such controls then I think a faster PC is on order.

[paul1981]

Ouch. From your screenies, you are set using a bog standard A4000 with 2MB of chip RAM and no fast RAM.

That's a crappy setting for games compatibility. For older games, try 512KB or 1MB of chip RAM, and 512KB or more of fast RAM.

If you can set Agnus type, 8372 is the magic number for a "classic" 1.3 Amiga, half mega of chip RAM, half megabyte "trapdoor" fast RAM. 8371 or earlier Agnus is half meg chip RAM at most. Rarely a very old game might insist on the older version, 8372 or up is 1MB or more chip RAM (and ECS and other video outputs with a Super Denise).

Bitmap Brothers just LOVED to hit hardware as hard as they could... heh heh... Chaos Engine I think had problems with 1Mb Chip RAM. It was developed on an A3000 (one of the few games that were, successfully) so I'd say very likely it expects some fast RAM. Could be wrong on that.

Or you could use a program called WHDLoad and run all known Amiga games on any Amiga configuration direct from hard drive.