Panasonic HHC ROM 'capules'

[Jeff_Birt]

Greetings,

I have a Panasonic HHC (RL-H1400) on the bench to be fitted with a new battery pack. Seems to work other than the old NiCad pack being well past its 'best by' date. In doing some reading lst night I found that you can't create SnapFORTH programs without the SnapFORTH 'ROM capsule'. (But you can run them without it.)

The 'ROM capsule' is one of the odd EPROM sockets that Molex came out with in the 1980s. The TRS-80 M100 used a similar socket for option ROMs. The Panasonic HHC variety is wired for standard EPROM pinouts but upside down. Looking at pictures of the capsules indeed it is just an upside-down EPROM wrapped around the Molex carrier.

Has anyone created images of any of these capsules. I have had no luck finding them on the web.

One really odd thing about the Panasonic HHC is that it uses an NMOS 6502 processor (Rockwell), in a 40-pin DIP. It looks like there were trying to come up with something quickly using COTS parts.