07-12-2017, 06:41 AM
Hi,
I've finally got enough parts together to attempt a ROM module for my Casio PB-2000C, as mentioned in this thread:
http://www.hpmuseum.org/cgi-sys/cgiwrap/...ead=215778
I have the service manual, but there's a few problems:
1. The service manual indicates a pin 46, but Diego mentions a 45 pin connector
2. The exact size of the module and the orientation of the pins isn't in the service manual
3. I was wondering what the CO pin was wired to (pin 44).
I've had a go at disassembling the PB2000C but it's not easy to get to the ROM connector and I don't want to damage my one example of this machine. I may create an extender board so I can get a scope onto the pins, there's not a lot of room in that slot.
I think you can see where I'm going with this...
Diego, would you (or anyone else who's done this) be kind enough to elaborate on your DIY ROM module?
Regards
Andrew
I've finally got enough parts together to attempt a ROM module for my Casio PB-2000C, as mentioned in this thread:
http://www.hpmuseum.org/cgi-sys/cgiwrap/...ead=215778
I have the service manual, but there's a few problems:
1. The service manual indicates a pin 46, but Diego mentions a 45 pin connector
2. The exact size of the module and the orientation of the pins isn't in the service manual
3. I was wondering what the CO pin was wired to (pin 44).
I've had a go at disassembling the PB2000C but it's not easy to get to the ROM connector and I don't want to damage my one example of this machine. I may create an extender board so I can get a scope onto the pins, there's not a lot of room in that slot.
I think you can see where I'm going with this...
Diego, would you (or anyone else who's done this) be kind enough to elaborate on your DIY ROM module?
Regards
Andrew