Re: Copying ROMS ?

Someone else pointed that out. I have replied to the list with the
ROM part numbers.

But I have two identical machines. In one, I have these ROMs, in the
other, I have 27C64s. Wouldn't that suggest that they are identical
pinouts?

Mike

>
> I seriously doubt vintage ROMS are copy protected!
>
> What is the ROM (EPROM) type you are using and what are they marked
> as?
>
> You might have a custom masked rom with inverted chip select or such.
>
> Kev
>
>
> >
> > I have several vintage computers (Epson HX-20). A couple of these
> > have been customized and have had the BASIC ROMS removed and some
> > other ROMS installed.
> >
> > I'd like to go back to the original BASIC machines. I do have one
> > original HX-20 that has the BASIC ROMs. But when I tried to copy
> > the ROMS into my Data I/O Model 22, only FF shows up. I presume
> > these ROMs are protected somehow.
> >
> > However, they function and must function in use, so the data should
> > be recoverable.
> >
> > Anyone have any suggestions on how to make copies of these old BASIC
> > ROMs?
> >
> > Thanks,
> > Mike
> >
>
>
>
Received on Fri Jun 21 12:26:24 2002