On Mon, 5 Nov 2001, Bo Zimmerman wrote:
> > The circuit board should have a copyright and part number on it somewhere.
> > It may be on the back side and you may have to remove the board in order
> > to find it. The part numbers are unique and should identify the circuit
> > board if not the entire machine.
>
> Good point. I've added links to those markings on the page for the machine.
The image gives an assembly number. There should also be a part number
somewhere. The assembly number would identify the board if someone has
one with the same number, but the part number can be looked up in parts
lists and service manuals.
> Thanks for the binary comparison of the ROMs, btw. I will swap the names of
> the lo and high ROMs, that must have been a typo after xfer. I can't
> imagine
> why the EPROM read would have failed though. The computer itself boots into
> BASIC just fine... ?
It's clear they can't be right. There are no vectors at the top of
memory. It would not even come up, let alone go into BASIC. The BASIC
power up message isn't there either.
Since the 4K ROM is right and the 8K ones are not, I would guess there is
an error in the routine to read the 8K ROM's.
Message was sent through the cbm-hackers mailing list
Archive generated by hypermail 2.1.1.