The Museum of HP Calculators

HP Forum Archive 15

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CMT EPROM Programmer?
Message #1 Posted by Howard Owen on 10 Feb 2006, 1:09 p.m.

I just bought two CMT71-32E EPROM modules. These fit the front ports of the 71, and contain one surface mounted EPROM chip apiece. One of them has '27C256(illegible)' visible on its surface. It appears from this old museum post that CMT sold a special programmer for these modules. Does anyone out there have one of these programmers, or have experience hacking one together for these modules? I so want the JPCROM on one of these. I'm willing to talk trade for the privilege of using your equipment. 8)

Regards,
Howard

      
Re: CMT EPROM Programmer?
Message #2 Posted by Rodger Rosenbaum on 10 Feb 2006, 11:04 p.m.,
in response to message #1 by Howard Owen

I have one of them, Howard, and I'd be glad to program a PROM for you, assuming the programmer still works!

Email me at r-o-d-g-e-r-o-s@yahoo.com (kill the hyphens)with your own email address.

            
Re: CMT EPROM Programmer?
Message #3 Posted by Jeff D on 14 Feb 2006, 9:30 p.m.,
in response to message #2 by Rodger Rosenbaum

Can you also program the HP-75 EPROMS?

                  
Re: CMT EPROM Programmer?
Message #4 Posted by Forrest Switzer on 14 Feb 2006, 11:37 p.m.,
in response to message #3 by Jeff D

Jeff,

The HP-71B EPROM programmer is specifically for the HP-71B EPROM, and will not accept others. The EPROM being programmed plugs into a contact set that duplicates the front port on the 71.

Forrest


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