Xref: utzoo comp.sys.amiga.hardware:2538 comp.sys.amiga.tech:13335
Path: utzoo!attcan!uunet!cbmvax!joe
From: joe@cbmvax.commodore.com (Joe O'Hara - Product Assurance)
Newsgroups: comp.sys.amiga.hardware,comp.sys.amiga.tech
Subject: Re: A3000 memory installation *HELP!* needed
Keywords: A3000, Toshiba Static ZIPS
Message-ID: <13201@cbmvax.commodore.com>
Date: 13 Jul 90 19:39:29 GMT
References: <25507@mimsy.umd.edu>
Reply-To: joe@cbmvax (Joe O'Hara - Product Assurance)
Organization: Commodore, West Chester, PA
Lines: 48

In article <25507@mimsy.umd.edu> kelso@mimsy.umd.edu (Stephen Kelley) writes:
>I installed 2MB (16) worth of 80ns Toshiba Static Column Zips 
>in my A3000/25 and all I get on bootup is the Kickstart requester
>screen w/ the Hard Disk options turned off. When I then tried to
>boot from floppy I got a message something to the effect that 
>"No memory found".
>
>Obviously I hosed up something (:-{
>
>Here's what I did:
>
>	3) Put the Zip chips in sockets C850 - C867 (the row of sockets
>to the right) w/ the "label" side of the chips facing front. They
>weren't notched so I had to choose one way or the other. I also
>*had* to put them in by hand since they were so thin. I was "strapped
>in/on" but who knows how sensitive these puppies are.

The ZIPs should be placed in number sequence (C850, C851, etc.), not in
contiguous sockets. It should look like this:

        ----back of unit-----

    ========   ========    <---empty
    ========   ========
    xxxxxxxx   xxxxxxxx    <---filled
    xxxxxxxx   xxxxxxxx
    ========   ========
    ========   ========
    xxxxxxxx   xxxxxxxx
    xxxxxxxx   xxxxxxxx
    ========   ========
    ========   ========
    xxxxxxxx   xxxxxxxx
    xxxxxxxx   xxxxxxxx
    ========   ========
    ========   ========
    xxxxxxxx   xxxxxxxx
    xxxxxxxx   xxxxxxxx

    ----front of unit----

-- 
==========================================================================
  Joe O'Hara                ||      Disclaimer: I didn't say that!
  Commodore Electronics Ltd ||
  Product Assurance         || "I never lie when I have sand in my shoes."
  Systems Evaluation Group  ||             - Geordi LeForge, Star Trek TNG
==========================================================================