CompuServe Messages

I've never tried the CSA board with or without external memory, but I can guess at a few possible problems it might be causing. (1) Bus loading: The 86 pin connector on the side of the Amiga is speced to be able to supply 1 "F" type load on each output pin. If the CSA board is presenting any unusual load to the unbuffered 68020 outputs, this may be causing problems. (2) Buffering: Does the CSA board buffer anything coming from or going to the 68020. I suspect that it does. This could cause some timing problems with the external boards. Some of the Amiga's bus timings get pretty critical. (3) On-Board Memory: Does the CSA board have any memory or other item on it that might have to be placed in Amiga memory, say via some command in the Startup-Sequence? If you've got an auto-config board hooked up, the OS might just place it in an area that conflicts with the resources of the CSA board. Unless a memory-mapped item is auto-config, you can't expect it to work in conjunction with any other peripheral, unless it sits somehow in Amiga reserved memory. These are a few ideas you may be able to look into, perhaps someone else has others. -Dave