Data I/O 29B

Jay West jwest at
Sat Aug 22 11:26:13 CDT 2015

I'm confused that you couldn't find any info on these. I have a 29B with
quite a few different attachments. These are about the best documented units
I've seen. I probably have 3 or 4 inches of documentation (fairly sure it
includes schematics), and at least 3 different versions of DOS programs that
allow you to control and automate the unit. ISTR a unix one floating around
as well. I know the docs include "thousands" of pinout families referenced
to which chips they are for...

I believe I scrounged all this from google years back. Let me know if you
can't find info....


-----Original Message-----
From: cctalk [mailto:cctalk-bounces at] On Behalf Of Billy
Sent: Friday, August 21, 2015 7:34 PM
To: General Discussion: On-Topic and Off-Topic Posts <cctalk at>
Subject: Data I/O 29B

I have a small batch of Data I/O EPROM burners.  Trying to test them out and
ran into a nightmare.  They require a pin family and size parameter.  But in
none of the documentation is there any mention of what these values are.
There are some generic pinouts, which are almost useless because Data I/O
changed the definition of several pins.

Then the manual says to get your part's timing chart and compare them to 409
pages of timing charts to find the family type!  Nothing is mentioned
anywhere on how to calculate size parameter.

There should be a chart or document somewhere that gives the parameters by
model numbers like 2516, 2764, etc.

Anyone know of a document like this?

Anyone have experience with the model 29A&B, Model 19, Model 100 gang
programmer, etc.

At this point, without better data, these 11 -12 deveces are heading for the
scrap pile.  This is the poorest documentation I've ever seen on a piece of
test equipment.

Billy Pettit

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