grego@darkeyes.sgi.com (Greg Orsini) (07/06/89)
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