Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!ut-emx!mjl
From: mjl@ut-emx.UUCP (Maurice LeBrun)
Newsgroups: comp.sys.amiga.hardware
Subject: Trouble with A3000 memory installation
Message-ID: <36667@ut-emx.UUCP>
Date: 23 Aug 90 21:19:11 GMT
Organization: The University of Texas at Austin, Austin, Texas
Lines: 36

Hello all,

With my collection of net.wisdom and 'Introducing the Amiga 3000' in
hand, I boldly set out to install my new 8 1Mx4 70ns ZIP SCRAMS.  But
all I get now when attempting to boot is the dreaded yellow screen
(after getting to the kickstart screen).

I took care to:
- be properly grounded
- install ZIPs in proper bank (bank 0), and correct orientation
- move 1MB DIPS to Chip ram section
- change jumper
- reassemble machine

So what could be wrong?

I'm a little concerned about the jumper -- the manual says number J852
and gives a picture of a jumper with 3 pins, but the one on the
motherboard with this number has five pins.  As in the docs, for 1Mx4
SCRAMS I changed it:

	 / \		 / \
	| . |		| x |		(x == jumper location,
from	| x |	to	| x |		 . == bare pin		)
	| x |		| . |
	| . |		| . |
	| . |		| . |
	-----		-----
	(J852)		(J852)

Is this correct?  Any other suggestions would be welcome.


Maurice LeBrun                  Internet: mjl@fusion.ph.utexas.edu
Institute for Fusion Studies              14547%NERSC@CCC.NERSC.GOV
University of Texas at Austin     Phonet: 512-471-6149