Data I/O 29B

Randy Dawson rdawson16 at
Fri Aug 21 22:05:18 CDT 2015

Something must be wrong here, the 29B/unipak is very easy to use.
I was the rep in Houston (USDATA) and I must have sold 50 of these.  It went for $4500 with the unipak.

A typical demo we would plug in a dumb terminal, its a lot more effective demo to select a device than from the keypad.

One of these I sold to Gateway Technologies, Rod Canion.  The demo and sale went down at a pancake house on the Southwest Freeway.
They used it to suck the BIOS out of the IBM PC, and form Compaq Computer.


> Subject: Re: Data I/O 29B
> To: cctalk at
> From: aek at
> Date: Fri, 21 Aug 2015 18:45:12 -0700
> On 8/21/15 5:33 PM, Billy Pettit wrote:
> > This is the poorest documentation I've ever seen on a piece of test equipment.
> >
> The problem is they went through at least three generations of 
> programming packs (individual device, unipak, unipack2/2A/2B)
> There is a text file (unipak2.txt) that I sent you that lists
> about 1000 devices along with the family and pin adapter.
> I gave up on anything earlier than the 2900/3900/Unisite a LONG
> time ago. I'd just offer them to people in the bay area and not
> even bother testing them. I should have the docs on bitsavers for
> them.

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