Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.1 6/24/83; site watcgl.UUCP
Path: utzoo!watmath!watcgl!dmmartindale
From: dmmartindale@watcgl.UUCP (Dave Martindale)
Newsgroups: net.micro
Subject: Re: Search for Jumpers ?
Message-ID: <944@watcgl.UUCP>
Date: Tue, 11-Oct-83 08:28:53 EDT
Article-I.D.: watcgl.944
Posted: Tue Oct 11 08:28:53 1983
Date-Received: Thu, 13-Oct-83 11:47:11 EDT
References: <12184@sri-arpa.UUCP>
Organization: U of Waterloo, Ontario
Lines: 19

My favourite way to put in a temporary NPG jumper while a Unibus DMA card
is removed is to take a blank Flip-Chip card (DEC used to sell these,
maybe they still do) and wire the foil at positions A1 and B1 together.
Then you plug this into the backplane in the row just above the
grant continuity card and you have provided continuity for NPG as well.

Even better, I believe that one of the DEC-lookalike vendors (Able?)
makes a card which plugs into rows C and D, providing the function of both
the ordinary grant continuity card plus the NPG card described above.
Also, it is the length of a normal card and has handles on it
so you can insert and remove it without mangling your knuckles!
I think this would be the way to go for non-technical people; it makes it
much more difficult to short together the wrong pins, and it also eliminates
the danger of putting the continuity card in upside-down or in the wrong
row.  (I'm sure I'm not the only one who's done this...)

	Dave Martindale
	allegra!watcgl!dmmartindale
	decvax!watmath!dmmartindale