VAX-11/780 boot disk

From: Richard W. Schauer <>
Date: Tue Jan 23 22:34:25 2001

On Tue, 23 Jan 2001, Clint Wolff (VAX collector) wrote:
> > refrigerator dolly and human power, except the RP06 and the 780 where we
> > used a come-along and a lifting frame I made. Heavy!
> Cool... I'm planning on moving my '780 into the basement with the same
> concept...

Actually, it didn't work all that well. If I had to do it all over again,
I'd seriously think about taking the machine to bits. Of course, if you
have something you can fasten the come-along to, it's easier. My lifting
frame was intended to distribute the lifting force laterally on the
bottoms of the walls of the building. The other problem is that there
isn't a good place to pull on the 780; I bent the frame rails somewhat on
the right side. Also it is top-heavy- once when we had to back up a bit
it wanted to flip itself over. It took some persuasion to keep it

> I have at least one (in the machine), but it may be bad... I bought one
> from ebay, but again, it may be bad... I need a quick way to hook an
> 8" floppy up to a running computer to read it...

Ebay is the last place I would have thought of, but I guess it figures,
everything else is sold there.

> My plan is to just set up a new 25V unregulated supply once I figure
> out how much current it needs to supply...

You could probably do one of two easy things: 1. Unhook two phases and
only run off one. I don't know what the current draw is, but the
transformer may be able to handle it. It goes to a 6-diode bridge
rectifier anyway. 2. (Temporary) Skip the power controller altogether.

Richard Schauer
Received on Tue Jan 23 2001 - 22:34:25 GMT

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