Someone gave me a free NTSC A500. I checked it out: 68000 CPU, ROM 1.3, ver. 5 m/b. But what puzzled me was a little board sandwiched on top of Gary, reading in small print "Phoebe II" & in larger print ICD, Inc. It has 3 jumpers, 1 of which is for "Agnus". It also has an insulated wire running from it to the middle of JP2, which is located in between the ROM & CPU. This little board has a DIP-like 10-connector with a flat-ribbon wire running from it to the other end, about 4 - 5 inches to another DIP-like connector connected to nothing. What's this for & what do you think was connected to it previously?
I tried to use
http://amiga.resource.cx , but it doesn't seem to be up any more...bummer!