Apple II Mystery Card

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Apple II Mystery Card

I received a mint Apple IIe, 3 5.25" drives, a cassette drive, light pen and a bajillion other disks / cables / peripherals over the holidays, and I'm going through all this stuff.

Anyway, when I opened it up, there is a disk controller card in slot 6, and a Proclock card in slot 4. In slot 1, there was a very plain-looking card, and I cannot tell what it does, or what it's for. On the back, it has "(C) 1984 Dunrich Computer Products Inc." and "SLOT 1" on the back. On the front, it has a 20pin male hookup (similar to that on a floppy disk controller card) and there are 3 chips and a capacitor on it, the largest chip says, "MC6821P" and "M9N8419" on it. It was made in Canada, and is a very aquamarine colour.

Google wasn't much help here. Any ideas?

BAH - it occurred to me about 30sec after I posted this that I'm an idiot, this is probably a printer adapter card. Wow, do I suck.

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Joined: Jun 18 2010 - 13:54
Re: Apple II Mystery Card

Yeah, that sounds about right (that it's a printer card, not that you're an idiot or suck).

Congrats on the Proclock card as well!

MarkO's picture
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Joined: Dec 10 2011 - 16:26
Re: Apple II Mystery Card

The "MC6821P" is like MOS Technology's 6522 or 6526..

Just the kind of Part you need to communicate with a Parallel Device, like a printer..

MarkO

Dog Cow's picture
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Joined: Dec 11 2008 - 16:26
Re: Apple II Mystery Card

I agree, probably a printer interface card.

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Last seen: 1 day 9 hours ago
Joined: May 11 2016 - 20:58
Re: Apple II Mystery Card

Thanks, guys. Given that it was in Slot 1, it should have been reasonably obvious, but you never know, when you get these computers, what's actually plugged into things.

Now I need a printer - when I was a kid in 1985, I had a Panasonic KX-P2023. I thought it was the best thing going.

amauget's picture
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Joined: Jan 3 2011 - 11:34
Re: Apple II Mystery Card

Hello,
Can you post a picture of the card, please ?
Thanks.

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