HP Portable Plus - ROMBO 128 KB EPROMS?
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07-19-2020, 08:34 AM
(This post was last modified: 07-19-2020 08:35 AM by Martin Hepperle.)
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HP Portable Plus - ROMBO 128 KB EPROMS?
While playing with my Portable Plus and reading many issues of the Portable Paper I became interested in burning EPROMS larger then 64 KByte.
In those days, Hal Goldstein offered the ROMBO EPROM burner and special 128 KB EPROM modules, consisting of a thin PCB with DIP-28 pins and a 32-pin EPROM with 128 KB. Somewhat similar to what was available for HP-41 and 71 calculators. Does one of you of you have such an EPROM module and could take some pictures? I would especially be interested in the pinout/connections of this 28 to 32 adapter. Maybe it is possible to create a clone of it. Thank you for looking, Martin |
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Messages In This Thread |
HP Portable Plus - ROMBO 128 KB EPROMS? - Martin Hepperle - 07-19-2020 08:34 AM
RE: HP Portable Plus - ROMBO 128 KB EPROMS? - Dave Frederickson - 07-19-2020, 04:54 PM
RE: HP Portable Plus - ROMBO 128 KB EPROMS? - Martin Hepperle - 07-20-2020, 07:28 AM
RE: HP Portable Plus - ROMBO 128 KB EPROMS? - Brian Hudson - 02-06-2021, 03:31 PM
RE: HP Portable Plus - ROMBO 128 KB EPROMS? - Martin Hepperle - 10-31-2021, 06:52 PM
RE: HP Portable Plus - ROMBO 128 KB EPROMS? - Dave Frederickson - 11-04-2021, 01:26 PM
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