I'm guessing it's a video I/O board for a Quadra 630ish machine. These were
squat and narrow boxes, like 2 LC's stacked on top of one and other. You
could drop in a MPEG decoder card, a ethernet or modem card, a TV Tuner
card, or a Video capture card. These were super propriatary and the board
won't work in any other machine.
----- Original Message -----
From: <healyzh_at_aracnet.com>
To: <classiccmp_at_classiccmp.org>
Sent: Thursday, June 01, 2000 7:07 PM
Subject: Re: Please help ID this Mac board--I hope it's old enough for the
list!
> >
> > Hello all,
> >
> > I just came across this small PCI type board, labeled:
> >
> > APPLE COMPUTER INC.
> > 820-0510-A c1993
>
> Are you sure it's a PCI board? If it's from '93 it's to old to be a PCI
> board, as it was in late '95 that Apple switched from NuBus to PCI slots.
>
>
> >
> > It also has a chip on it with the label:
> >
> > 341S0021
> > c 1983-93 Apple
> > ^
> > |
> > |-----That's why I'm hoping it's old enough to qualify :-)
> >
> > Anyway, on one side of the PCB it's got four large quad flat pack chips,
> > from Philips, TI, VLSI, and BT, and on the other side (with the Apple
> > labeled chip I mentioned earlier) it has two rows of 8 each Toshiba
> > TC528128BJ-80 RAM chips. On the back end it has a DB-15F connector (like
> > the old Apple monitor connector) and two round DIN connectors labeled "S
> > IN" and "S OUT" with 7 female contacts each.
> >
> > It came in a box labeled DOS Compatibility Card for Macintosh, but I'm
> > beginning to think it's not.
>
> I suspect you're right, no sign of a x86 CPU? It doesn't sound like ones
on
> there.
>
> > Any clues are greatly appreciated!
>
> Well, Apple has had a habit of putting parts of their systems on other
> boards. I think what you've got here is the Video and Audio portion of a
> 68k based Mac. Taking a quick look at what was shipping in '93
> http://lowendmac.net/time/1991-95.shtml I'd guess that it's from a Centris
> or a Quadra.
>
> Zane
>
>
Received on Wed Jun 07 2000 - 12:36:29 BST