One is a PET 2001-8. It has the regular keyboard.
Inside was an
"expandaram" board that added additional RAM and some
peripheral slots
for the PET. The cards plugged in looked a lot like Apple ][ cards in
their form factor but I assume this is some proprietary bus. Anyone
have info on this?
I have one of these ExpandaRam board in my Pet 2001. I have a 5.25" disk
drive that plugs into one slot, and a ROM card that contains the disk
O/S that plugs into the other slot. I don't know if they made any other
peripherals that plugged into those spots.
The disk drive unit has 2 5.25" drives in it. They were not compatible
with the Commodore drives. If you're interested, I can dig mine out and
post a photo.
- Bob