Re: 9V AC needed for C64? (C128 and serial bus q)

From: Richard Atkinson (
Date: 1998-09-04 18:11:36

On Fri, 4 Sep 1998, Andre Fachat wrote:

> Martijn van Buul wrote:
> > > (in my C128, there is an extra wire from the keyboard controller to the
> > > character generator, in the C128DCR, it's supported by the board via a
> > > jumper setting).
> > Well, there's a quite unprofessional hack done in my 128D, involving
> > wires and stuff.... I would have expected more from Commodore, but
> > the guy who gave me the thing claimed that it was in it's original state.
> A few days ago I had the first look into my (german) C128D, and it has the 
> "C128 german charrom" or so on an adapter socket, with some (two?)
> hand-soldered wires...

My first C128 was like that too. I think both the character ROM and the
kernal ROM were EPROMs, and there were coloured wires and glue holding
them in place all over the board. It really looked horrid; I can hardly
believe that Commodore built many like that... (but then again... :-)

I also picked up a French Amstrad 464plus (sorry guys ;-) which has that
AZERTY layout but the BASIC ROM cartridge has an English keyboard mapping.
(oh dear)

Ruud: Your CP/M cartridge arrived today. Great job! Must return the favour
somehow. Any old 8bit hardware you're looking for? (note: might be rare in
the Netherlands, but common in England?)

Quick question: what's the maximum number of Commodore computers that can
be on the IEC bus? I'm using the serial bus as a way of networking C64s
but since each one has a pullup resistor on the serial bus bits, the line
drivers (7406 open collector hex invertors) will only be able to support a
few, much less than disk drives. Can I get away with 6 or 8 machines?



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