Date   : Mon, 04 Nov 2002 20:25:26 GMT
From   : Chris Johns <chris.johns@...>
Subject: Re: Econet circuitry

> Is  it feasible to consider upgrading an existing Model B mainboard by adding
> the components which make up the econet interface? Are all of the components
> easily available

The ADLC, 319s and 75159s may be hard to get hold of. One option may be
to hack one of the Master 128 / Archimedes boards onto the BBC. Some of
the decoding stuff would need to be done on the BBC side, but that is
IIRC just done in standard 74 series logic, so shouldn't be too hard.

I did have an idea of how to hack one of the Master modules into a beeb,
but I never tried it out, it basicially involved making the necessary
signals to talk to the master module by using bits of the full BBC
econet circuit and then letting the module do the rest. I'll dig the
books out if you want more info.

Anyone any thoughts as to if this would or wouldn't work?

Having done a BBC econet upgrade it's not the most fun task even if you
do have all the bits...
-- 
 <chris.johns@...             >