Re: Copying ROMS ?

Verify that you can read another 2764 (incase you have reader problems).

Can you swap the 2764 for the Masked ROMs & work without changing
jumpers/settings/wiring?

I see there are a few HX-20 collectors on the net, they may be more
informed.

Kev

>
> I think I understand what you are saying. I'm sure they are Masked
> ROMS or at least that would make sense. They are a 4 chip chipset
> with numbers: EPSON BASIC1R0 M64020AA to M65023AA.
>
> The thing is however, that in identical machines, the other EPROMS
> are 27C64 so the pinout would seem to have to be the same or the
> EPROMS would not work right in the other identical machines, would
> they?
Received on Fri Jun 21 12:26:24 2002