(10-05-2014 05:10 PM)Michael Fehlhammer Wrote: [ -> ]Should we move, or should I post a reference to that thread in the general forum?
That is a good idea, it will be a better place than here.
(10-05-2014 05:10 PM)Michael Fehlhammer Wrote: [ -> ]I dream of a collection of HP -75 tool set like the JPC rom for the HP 71b.
Same here. 8-)
(10-05-2014 05:10 PM)Michael Fehlhammer Wrote: [ -> ]Even if we had a programmer adapter or specialized eprom programmer, we still lack a source of eprom modules, they seem to be extremely rare.
Or can you imagine a way of producing them, including the module housings ?
Could rom modules be modified to become eprom modules?
( But since even the most common HP 75 roms are relatively rare and expensive, that wouldn't help that much ).
This means that I would have to create something like Diego did with it's Clonix-D/NoV-64 modules for HP-41.
If we go that route, then we need to do the following ...
- Choose a microcontroller to do the 8/16/24/32KB module simulation
- Make a prototype, test the electrical consumption and the impact it has on the HP-75 OS.
- Find a connector that is compatible with the motherboard socket
- Design/produce/assemble the PCB and it's components
- Come up with something to help push/pull the module inside and keep it in place.
--> a traditional mould for the housing would be way too much expensive.
--> a 3D print module housing (I would need to experiment on the plastic push/pull resistance of such a module)
Such a project is feasible, but currently I do not have the time to do it.
I have put on dropbox the following zip file for the PMS
82713A Plug-In Module Simulator [manual+soft] (sc).zip
https://db.tt/jtqt6ivN
The 65MB zip file contains ...
82713A Plug-In Module Simulator [manual 150dpi ledger] (sc).pdf
82713A Plug-In Module Simulator [manual 150dpi letter] (sc).pdf
82713A Plug-In Module Simulator [manual 300dpi ledger] (sc).pdf
82713A Plug-In Module Simulator [manual 300dpi letter] (sc).pdf
82713A Plug-In Module Simulator [soft cards] (sc).pdf
82713A Plug-In Module Simulator [soft catalog] (sc).txt
82713A Plug-In Module Simulator [soft tape] (sc).dat
Best regards,
Sylvain