Re: Mystery card

["Greg J. Buchner" <buchner@freenet.msp.mn.us>]

On 1 Oct 1996, Michael Hackett wrote:

> Stumped the Genie gurus, so I thought I'd try hear:
> 
> I was helping out with a local "Technology Recycling" group and discovered
> a mystery card in SSC box tucked away on a shelf. There's a sticker on it
> that says "Data Shift (TM) mini-ROM (TM) Board". It's a small board,
> barely longer than the slot, with two rows of chips, laid out as follows: 
> 
>          74LS20BC         74LS74BC
>          SN74LS30N        DM74LS04N
>          an EPROM (?)     SN74LS02N
>                           SN74LS08N
> 
> Anyone know what this is?
> 
> Michael Hackett

I also work at a "technology recycling" company and came up with a
card that's really mysterious.  It's about 1/2 inch shorter than a
Disk ][ controller card and is encased entirely in a black epoxy.
The only information on the card is a sticker that has the following
on it:    PC20553 Rev B/A
          S/N 101,508

Greg B.

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