On Mar 20, 0:06, Glen Goodwin wrote:
> > From: Pete Turnbull <pete_at_dunnington.u-net.com>
>
> > > Wasn't the ZX81 board already prepared to use a 6116 instead ?
> >
> > Yes, it was. I put 6116's in several.
>
> Pete, what modifications to the board are required in order to use a
6116?
I don't have either the service manual or my ZX81 handy, so I can't check,
but as far as I remember, just remove the 4118 and replace with a 6116.
There might be a wire link to change (if so, it's obvious) but I don't
remember having to do that. It is good practice to fit a socket, though.
A few ZX81's had a pair of 2114's instead of the normal 4118, which were
in short supply at one time, but the same principle applies (the PCB is the
same).
--
Pete Peter Turnbull
Network Manager
University of York
Received on Thu Mar 21 2002 - 17:37:33 GMT