I'm not sure if this is the right subforum to ask about it, but I have a problem with the Individual Computers RTC Module I recently bought. I tried using it with my A500 Rev 8A which has a 2 MB Chip RAM expansion and ACA500Plus with ACA1221lc on top. When I connect the clock module either to the ACA500Plus or to the ACA1221lc clock port and set the options in ACA500Plus menu accordingly, it's not recognized by the Amiga (both SysInfo and Amiga Test Kit say that there's no clock).
I tried it on my other A500 Rev 6A and there it works. EDIT: It doesn't - I was silly enough to forget that the other Amiga had an RTC under the trapdoor - after removing this, the RTC module was also unrecognized both on ACA500Plus and ACA1221lc.
I attached pictures of how I installed the module in both configs and of the module itself. Am I missing something here or is the module defective?