combining hp41 modules into one cartridge
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02-13-2018, 02:19 AM
Post: #1
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combining hp41 modules into one cartridge
Greetings. Can someone point me to any documentation on shoehorning two ROM circuits into one cartridge? I recall a French article that described how careful soldering and perhaps a little sandpaper could put two 4K ROMs in one package.
Also, for someone expert in this manuever can you put an Extended Memory together w a 8K ROM because the address spaces don’t overlap? Thanks Todd https://github.com/twdeckard/HP41CX-SLANTR?files=1 https://github.com/twdeckard/HP41CX-PLAN...PLAN41.rpn (doomed to remain incomplete and undebugged) |
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02-13-2018, 02:32 AM
(This post was last modified: 02-13-2018 02:36 AM by Mark Hardman.)
Post: #2
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RE: combining hp41 modules into one cartridge
(02-13-2018 02:19 AM)twdeckard Wrote: Greetings. Can someone point me to any documentation on shoehorning two ROM circuits into one cartridge? I recall a French article that described how careful soldering and perhaps a little sandpaper could put two 4K ROMs in one package. This thread in the old forums section would be a good place to start: Double Extended memory module HP41cx.. PeterP references specific issues of PPC: PPC V11N1 p28 - Procedure for Module Doubling/Tripling PPC V13N7 p21 - Procedure for Module Doubling/Tripling If you don't already have a copy of the PPC DVD, it can be purchased for a modest amount from Jake Schwartz at http://www.pahhc.org/ppccdrom.htm. Ceci n'est pas une signature. |
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02-13-2018, 02:48 AM
Post: #3
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RE: combining hp41 modules into one cartridge
I plan to do this with two extended memory modules, but I’m going to combine two single density memory modules first, so I have a better chance of success with the extended memory modules.
Try CC41! |
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02-13-2018, 03:47 AM
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RE: combining hp41 modules into one cartridge | |||
02-13-2018, 07:49 AM
Post: #5
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RE: combining hp41 modules into one cartridge
if you succeed, i would be interested in the empty module shell and connector. Good luck on your project. the pdf linked by Nate Martin is probably the best starting point.
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02-13-2018, 09:22 PM
Post: #6
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RE: combining hp41 modules into one cartridge
(02-13-2018 07:49 AM)damaltor Wrote: if you succeed, i would be interested in the empty module shell and connector. 3D printed Module shells can be found at: https://www.shapeways.com/product/LSV44R...-inventory |
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02-14-2018, 02:15 AM
Post: #7
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RE: combining hp41 modules into one cartridge
Thanks!
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02-14-2018, 09:09 AM
Post: #8
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RE: combining hp41 modules into one cartridge
(02-13-2018 09:22 PM)Nate Martin Wrote:(02-13-2018 07:49 AM)damaltor Wrote: if you succeed, i would be interested in the empty module shell and connector. Thanks, i have seen that. Still the original shells are nicer, and the connector is hard to build from scratch |
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