Ithaca Audio and friends

From: Doug Yowza <yowza_at_yowza.com>
Date: Thu Mar 26 12:24:13 1998

On Thu, 26 Mar 1998, Allison J Parent wrote:

> Ithica Audio, some pretty neat systems. I used to call on them as an
> apps engineer back in 1980. I wouldn't mind finding one or at least the
> floppy controller as I had some influence in the design.

Both the floppy and floppy controller are from Micropolis in my box.

> IF it has two edge connectors it's multibus and it was made a few years
> later as National was not in the multibus market till 79-81ish.

The NS BLC has a 1977 coyright on the PCB. From the component side: P1 is
the bottom left-most 86-pin (2-sided 43) connector and is plugged into the
backplane. Both boards also have an unconnected 60-pin P2 on the bottom
right.

The CPU board also has 50-pin J1, 50-pin J2, and 26-pin J3 on the top of
the card, presumably for I/O connections. It's a single-layer, two-sided
board, so I should be able to trace the pins. Some of the chips are even
labeled with their I/O address, so if I get it to come up, I might even be
able to program the thing.

-- Doug
Received on Thu Mar 26 1998 - 12:24:13 GMT