VSII/GPX joy (and minor annoyance)

[Antonio Carlini]

Arno Kletzander wrote:
> Hmm. One half of the base board does however have circuitry connected
> to those pads that are just linked by grant continuity traces on the
> second half (and the 4-plane memory boards), so I figured it might
> actually be doing something useful with it. Haven't studied the
> technical description yet...

The QVSS and QDSS will be passing the grant signals along otherwise
boards further down the bus will have issues. The RQDX1 got that
wrong (so it has to be the last board on the bus). You can remove the
boards but you will have to avoid leaving "holes" behind them (so you'll
have to shuffle other stuff up).

> The MVII at University has a TK70 installed, but as it will probably
> never see much use even if we manage to fix the supply, I might be
> able to get it traded for a TK50 (which was what the machine
> originally had).

Don't let me stop you trading up to a TK70, but FWIW I never had an
issue with TK50s. I prefer TK70s but that's because I can get about
three times as much on them!

Antonio

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