Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!ucbvax!decwrl!sgi!grego@darkeyes.sgi.com
From: grego@darkeyes.sgi.com (Greg Orsini)
Newsgroups: comp.sys.amiga.tech
Subject: HELP!  I busted my A1000.  Ohhh Noooo.
Keywords: A1000, busted, dummy
Message-ID: <37475@sgi.SGI.COM>
Date: 6 Jul 89 03:03:55 GMT
Sender: daemon@sgi.SGI.COM
Organization: Silicon Graphics, Inc., Mountain View, CA
Lines: 23


Now I've done it.  I finally got around to attempting the Amazing Computing
half megabyte add-on by piggy-backing memory chip onto existing chips.

I did the mod and crossed my fingers and it didn't work.  Well, I started 
looking around but couldn't see anything.  I turn the Amiga on and the power
light blinks five times and the screen is dark, then five seconds later it goes
all orange (maybe red, I'm color blind).  

So I decide to back to sqare zero.  I pull out the piggy-backed chips and the
rest of the wiring and tie the clipped input of the 74138's back to ground.
Now I turn the machine on, light flashes five times and the screen is dark...
five or ten seconds and the screen turns green then it reset and starts over.
I have only the A1080 and keyboard connected (no 256K expansion).

Did I burn up my memory chips?  

Thanks for any pointers anyone can give me.


--
Greg Orsini, contractor at large
(408) 476-5292    grego@darkeyes.sgi.com   {backbone}!darkeyes.sgi.com!grego