AE.drums

I had a 80 column display expansion board made by "Austin Franklin"; this device used one of the memory slots AND the right cartridge slot to work. I believe the 80 column expansion board was contained in the memory slot and the firmware drivers where contained in the cartridge. I discovered a lot of programs would not run unless I removed the controlling right cartridge. This is the ONLY released device I know of that did in fact make use of the right cartridge slot.