Ideas for a simple, but somewhat extendable computer bus

Noel Chiappa jnc at
Mon Nov 20 14:09:49 CST 2017

    > From: Allison

    >> I would seriously consider shared data/address lines, like on the QBUS.

    > QBUS is wrapped around a subset of PDP11 and the unique processors made
    > to fit it.

I did say "like ... the QBUS", not "the QBUS"! I was just trying to make the
point that the original sketch assumed separate address and data lines, and
that's an assumption worth looking at.

    > The bottom line is for every bus you have to get on and off with
    > devices to buffer ... The more you use the less card there is for other
    > things

Yes, but that cuts both ways: multiplexed address and data also saves you a
lot of bus transceivers.


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