First VAX-11/730 VMS Boot! (was: Re: VAX-11/730 %BOOT-F-Unexpected Machine Check)

Mark J. Blair nf6x at
Sun Jun 14 12:25:07 CDT 2015

> On Jun 14, 2015, at 10:01, tony duell <ard at> wrote:
> If the connector on the DELUA board is a normal Berg-type header (and I think it is) then maybe you could
> use a piece of (twist-n-flat?) ribbon cable to make an extension that could be routed through the cable
> pan arrangement and then connected to the original DELUA cable back in the rack cabinet.

That might be a good approach. The DELUA end of the cable has a Berg connector, and the other end has the typical 15-pin D-sub AUI connector with a slide latch. I'll look up the cable wiring to see if signals that would best be twisted pairs are conveniently placed on adjacent odd/even pins, such that twisted pair ribbon cable would work well electrically.

Or maybe I can use the round cable that I already have, with P-shaped cable clamps screwed down using the screws at one end of the flat cable clamps. There may not be enough clearance in the tray for that.

Mark J. Blair, NF6X <nf6x at>

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