bryce@hoser.berkeley.edu (Bryce Nesbitt) (09/16/87)
A reliable source just told me that early Amiga 500s have a defect that
causes Dtack to be handled improperly. The result is a wait state,
slowing the machine down quite a bit.
This may be the source of the rumors that the A500 (and A2000) are slower
than the A1000. (See the tester program I posted a while back that has
shown that the production models at least have no basic speed penalty.)
The problem has to do with the GARY chip. Sounded like a CMOS output
was not converted to TTL properly... but I'm not sure about that. The
fix is a single transistor. The reliable source learned this at a
A500 service traning course given by Commodore. Presumably the problem
and it's fix will be common knowlege at service centers soon.
|\ /| . Ack! (NAK, ENQ, SYN)
{o O} .
(") bryce@hoser.berkeley.EDU -or- ucbvax!hoser!bryce
U How can you go back if you have not yet gone forth?marsella@monkees.rutgers.edu (Marsella) (09/18/87)
In a previous article, the following was posted: >A reliable source just told me that early Amiga 500s have a defect that >causes Dtack to be handled improperly. The result is a wait state, >slowing the machine down quite a bit. I was wondering if there was a serial number cutoff by which I could gauge whether I owned an "early Amiga 500". marsella@red.rutgers.edu