Zengrange Zeprom Question - Printable Version +- HP Forums (https://archived.hpcalc.org/museumforum) +-- Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum-1.html) +--- Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum-2.html) +--- Thread: Zengrange Zeprom Question (/thread-233779.html) |
Zengrange Zeprom Question - aj04062 - 11-10-2012 I just picked up 2 SMI Surveyor-41 CO-OP modules that are identical except one is labeled Zengrange and one is not. I can feel the "erasing window" under the sticker on the Zengrange labeled module, but there is no window on the other one. Question is: Can someone identify the non-Zengrange module? Is it an MEPROM? Cat 2 returns CO-OP ROM for BOTH modules...
Edited: 10 Nov 2012, 12:29 p.m.
Re: Zengrange Zeprom Question - Raymond Del Tondo - 11-10-2012 Can you provide pictures of the other module? If it has a small opening on each side, then it could be a CMT EPROM. If the module housing looks exactly like a normal HP module, then maybe it's a mask programmed ROM made by HP. HTH
Ray
Re: Zengrange Zeprom Question - aj04062 - 11-10-2012 Looks like there is a hole in the side:
Edited: 10 Nov 2012, 3:20 p.m.
Re: Zengrange Zeprom Question - Raymond Del Tondo - 11-10-2012 Thanks for the pics. It is a CMT EPROM. The EPROM chip is standard, but to reach the pins you'll need a special programming adapter, which is next to impossible to get.
Ray
Re: Zengrange Zeprom Question - aj04062 - 11-10-2012 Thanks Ray, I'm going to toss these up for auction. I appreciate the knowledge so I can accurately describe them.
Adam Edited: 10 Nov 2012, 7:07 p.m.
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