Xref: utzoo comp.sys.amiga:31289 comp.sys.amiga.tech:4366
Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!bloom-beacon!apple!oliveb!amiga!cbmvax!daveh
From: daveh@cbmvax.UUCP (Dave Haynie)
Newsgroups: comp.sys.amiga,comp.sys.amiga.tech
Subject: Re: green screen on power up
Message-ID: <6413@cbmvax.UUCP>
Date: 28 Mar 89 23:03:28 GMT
References: <1526@wpi.wpi.edu>
Organization: Commodore Technology, West Chester, PA
Lines: 30

in article <1526@wpi.wpi.edu>, pawn@wpi.wpi.edu (Kevin Goroway) says:
> Xref: cbmvax comp.sys.amiga:33735 comp.sys.amiga.tech:5021

> I noticed that someone mentioned that they see a green screen on a 2000 with the 68020 board in it...
> My 2500 does the same thing...do I have a ram problem? (I haven't noticed one,
> but then again, I have 5 megs, and might not have ever used the bad area...)
> Is this standard? (no ram error, just a colored screen?)
> thanks!

Sometimes A2500 type systems will display a Green or Blue-Purple screen for
a fraction of a second on powerup or during reboot.  Not sure exactly why,
but it's not generally a result of the diagnostic code, far as I can tell.
If you're getting a Green screen due to RAM failure, the machine won't boot.

Actually, I did find one real failure due to the A2620.  If you power up
AmigaOS with the MMU switched on, you fail, due to the lack of an MMU table
being available.  This shouldn't ever happen, since powerup is supposed to
clear the MMU registers.  But on one system, way back when, the MMU wasn't
always being reset, and we'd occasionally power up Green and hang until a
reset that actually cleared the MMU.  Nothing any release machine should have
to worrk about.

> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> | Pawn@wpi.wpi.edu 		Worcester Polytechnic Institute, Mass, U.S.A. |
> | Pawn@wpi.Bitnet		main() { printf("Hello World!\n); }           |
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
-- 
Dave Haynie  "The 32 Bit Guy"     Commodore-Amiga  "The Crew That Never Rests"
   {uunet|pyramid|rutgers}!cbmvax!daveh      PLINK: D-DAVE H     BIX: hazy
              Amiga -- It's not just a job, it's an obsession