Straight away I'd like to acknowledge that I purchased my a1200 used with a used aca1221ec. Any help you're willing to provide is appreciated but definitely not expected for a used purchase.
I recapped the a1200 and upgraded to ks 3.1 I also did the timing fix by removing ec123 and 125. The machine seems to run perfectly fine without the accelerator card.
When I first tested the accelerator the Machine wouldn't boot off the cf or with the cf installed but would boot from the floppy but no fast ram was showing. I then tried the three different jumper settings and now can't seem to get the machine to boot no matter which jumper setting I try. I get a video signal but only a blank screen.
With the card removed the machine goes back to normal.
Any suggestions are appreciated.
Thanks Kevin