I'm mostly happy with the performance of my rig. I am, however, having some performance issues with some games. Examples of games that are misbehaving are Turrican 2 and Cybercon III. In Turrican's case the symptoms are choppy scrolling/animation and slower music. In the case of Cybercon III the frame rate is darn near 2 fps.
Without the CSPPC the machine is running a 030/16 and both of these games run great. I've been back and forth with Bert Jahn (the author of WHDLoad) who indicates that this has to do with the "cachebility" of chip-memory. Here's a chunk of our conversation:
On Tue, May 01, 2007 at 02:14:45PM +0200, Bert Jahn wrote:
> the reason for running slower is probably that your csppc board does
> not support the cachebility of chipmem. In that case you should use
> the option ChipNoCache in s:whdload.prefs. With that it should run a
> bit faster but maybe not as fast as on your 68030.
> there is nothing more I can do because of that, sorry.
He's right! Adding ChipNoCache to my whdload.prefs changed the symptoms. Turrican 2 is now running at full speed. Cybercon III is better, but on my 060/60 it's still running a third the speed of the naked A3000 (030/16).
I've spent many months lurking and am quite impressed by how "hardware inclined" much of the Amiga community is.
I guess I'm curious why only some CSPPC boards have this defect. Could there be some sort of hardware or software fix to this issue; something as easy as an INT2 mod, maybe? :shrug:
