I have a IIe (boots as enhanced: Apple //e), motherboard 607-0187-A, and 80 column text card 607-0103-J.
They came together and I think they're compatible, but not sure.

When I boot to DOS 3.3 then type PR#3 (capslock is on) to activate, the system restarts.

When I boot to ProDOS 1.1.1 then type PR#3 I get "NO DEVICE CONNECTED".

When I boot with no disk then type PR#3 the system hangs.

I've followed the "80-Column Text Card Manual For //e Only" and it looks like I'm doing things right. But I'm certainly not getting the results anticipated.

Do you have some tips to share?

  • Is the 80 column card inserted in slot 3?
    – user722
    Jul 16, 2017 at 5:55
  • 2
    "NO DEVICE CONNECTED" means what ProDOS reads from the card ROM doesn't match what it expects to find. So it's some kind of hardware problem: bad contact, or something broken on the card.
    – dirkt
    Jul 16, 2017 at 6:46
  • 3
    This is more of a forum-style trouble-shooting question. Is it in the AUX slot? (Not slot 3.) Oriented correctly? If so then yeah, possibly a hardware problem. Typically the first step is to remove all other cards and swap the 80 column card (into another //e, and another card into this one). Jul 16, 2017 at 11:39
  • It's in the Aux slot oriented correctly, and I've tried it in two //e, with the only other hardware being a drive card. Same results. I'll chalk it up to a bad card. Thanks.
    – snyderj
    Jul 16, 2017 at 18:46
  • 2
    I forgot the easiest thing to try - the Apple's built-in self test with Ctrl-Closed-Apple-Reset. That tests AUX RAM. Another thing to check for is if there's a jumper on the card is should be closed. Jul 16, 2017 at 22:26

2 Answers 2


Since my comments were helpful I've collated them into an answer.

Things to check:

  • Is the card in the AUX slot? Not slot 3 - that's usually where II or II+ 80-column cards go.
  • Is the card oriented correctly? E.g. one end might have "Keyboard" printed on it.
  • If there's a jumper on the card it should be closed

Things to try:

  • Remove all other cards.
  • Swap the suspect 80 column card into another (known working) //e.
  • Swap another (known working) 80 column card into the suspect //e.
  • Try Apple's built-in self test by pressing Ctrl-Closed-Apple-Reset. That tests AUX RAM.

Say, didn't you have almost much of the same issue with another I/O card just recently?

Chances are good that the IOU chip is dead. It's prone to die in quite creative ways. Get a new one and try a swap (or just another IIe anyway).

  • This is an old question that I just today edited and answered. Please read the comments on the question. Mar 13, 2018 at 4:53

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .