Data I/O 29B

Jim Stephens jws at
Sat Aug 22 00:24:45 CDT 2015

At microdata we had a support contract with Data I/O and every set of 
roms for the base unit and the Unipak came with a new poster up to date 
with the latest parts from the manufacturers.

So you don't need to just get a poster or table or list, but you also 
need to match it to the firmware set in your 29xx.

I grabbed a stack of the posters at one time which were old and have 
them somewhere.  I'm not sure what would have happened to them at heavy 
user sites, but I know such as the local Avnet, and Hamilton offices 
which we mooched programming time from after I left Microdata had quite 
a few.  I don't know if they got as many updates as Microdata did.

Randy, did you know of such a program?  The program I'm talking with may 
have gone around rep firms, as Microdata was using the crap out of a lot 
of different roms, and then eproms.  Of course if you blew up a rom in 
the Data I/O the manufacturers also warrantied them back pretty much w/o 
any question, or someone came out to find out what you were doing wrong.


On 8/21/2015 8:05 PM, Randy Dawson wrote:
> 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.
> Randy
>> 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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