Path: utzoo!utgpu!utstat!jarvis.csri.toronto.edu!mailrus!cornell!uw-beaver!blake!ogccse!littlei!omepd!inteloa!hah
From: hah@inteloa.intel.com (Hans A. Hansen)
Newsgroups: comp.sys.amiga
Subject: To Steve Ludtke :: Re: Mem xpansion for a 1000
Message-ID: <4215@omepd.UUCP>
Date: 12 Mar 89 22:17:10 GMT
References: <9981@cit-vax.Caltech.Edu>
Sender: news@omepd.UUCP
Reply-To: hah@inteloa.UUCP (Hans A. Hansen)
Organization: Intel Corp., Hillsboro, Oregon
Lines: 30

sorry people, I tried to mail this and it bounced....


Steve,

Have you added the GROUND wires to the PALs on the daughter board??

If NOT then either you or someone handy with a soldering iron will need to
add a 16 AWG solid wire across all 4 PALs on the daughter board connecting
both ends thru the grounds on the interconnect sockets and then to good
solid ground traces on the mother board.

This grounding trick was discovered by Bryce Nesbit and has saved many an
add-on board from the scrap heap.



			SOLDER SIDE OF THE DAUGHTER BOARD

  -- wire ------------------------------------------------------------------
             |       |    |      |       |       |            |       |
             |       |    |      |       |       |            |       |
	11  10  11  10   10  11  10  11  10  11  10  11   11  10  11  10
	12   9  12   9   9   12  9   12  9   12  9   12   12   9  12   9
	13   8  13   8   8   13  8   13  8   13  8   13   13   8  13   8

	 SKT      SKT     PAL     PAL     PAL     PAL       SKT    SKT


Hans