Hi,
I had (well still have) an Adspeed in a 1 meg chipram, 1 or 2 meg fast ram (on a Supra expansion). I added the switch so I change speed on the fly, but mostly I left it at 14 mhz because I didn't run into many problems. I remember having problems when I had my Baseboard installed - Unreal and a couple of others wouldn't work.
@Tenacious - I did test it with a few other programs that yielded about the same results. Compatibility not good at all. I may someday move that to another machine where the expansion RAM sits at a different address and see if that's the conflict. Honestly, I have more testing to do, before I make a solid conclusion. Most of the programs I was playing with needed the Fast Ram, so disconnecting it to check compatibility on a 512kb machine was counterproductive. I did have a SupraTurbo28 once. That didn't give me any problems whatsoever and I noticed a big improvement right away with that thing switched on.
So far, the cheapest "accelerator" solution I've found for a harddriveless A1000 is to optimize disks using B.A.D.! That thing seriously works

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