[WANTED] RAM & ROM cartridges for Casio FX-9000P

[Papalapa]

I'm looking for a 4K or 16K RAM cartridge and ROM cartridge for Casio FX-9000P.

 

 

Here's a picture of the machine and also of the cartridge

 

Edited July 26, 2020 by Papalapa

[Papalapa]

As it seems difficult to find I attached a picture of the cartridge also.

 

[Papalapa]

No luck at the moment, let me insist.... 🙂

[wierd_w]

I would think you might be better sharing the wiring diagram schematics you found for the module, and asking one of the local builders to make you one.  Getting a genuine article might prove...  Next to impossible.  There are many talented people here who could build the module for you with the schematics you found.  Wave some dollars under them, and it might well happen.

 

[wierd_w]

For any board makers that would like to make this happen--- Here are the schematics he found and posted in Classic Computing.

 

I found images of what the original cards look like but it did not have traces for the backs. However, I was able to lift the RAM chip numbers, and grab a datasheet.

https://datasheetspdf.com/datasheet/TC5047AP-1.html

 

Armed with that, and if he offers money for the parts and work, it should be possible to manufacture what he needs, since I very much doubt he will find one of these in the wild.

Edited August 29, 2020 by wierd_w