Hi. I've recently received my ACA 1221lc accelerator with RTC module. It had been working fine on my A1200 OS 3.9 machine until last week. Everything seemed normal, but when I inserted a floppy disk there was static on the screen doubling the size of the top display bar and the mouse pointer and Amidock gave bar-code style red and pink graphical bars. The A1200 even guru'd the first time it happened.
I tried turning the machine off and on and also re-seating the accelerator card. The card seemed to be on an angle which it wasn't when installed. After doing this there was No change. I thought I must have a failed CIA chip but later swapped out the 1221lc for a 1233n and all was back to normal.
What could be awry with the 1221lc card I've bought?