From: John Niven <[EMAIL PROTECTED]>
Date: Thu, 7 Jul 2005 13:43:12 -0700
In my local computer junkyard I found this SIMM in an antistatic bag,
so I have no idea where it comes from.
It's a 64 pin simm with a notch in the middle. It has four, socketed,
EPROM's which have stickers on the top. These read:
342-073*
C APPLE 1983-89
W8929
where the "*" is 3, 4, 5, or 6 for each EPROM.
Yep, definitely a IIci ROM. I checked the part numbers on the chips
for one of my IIci's and they're the same. This is the most reliable
way of visually identifying Apple ROMs. Each chip will have a 342-
or 343- part number on it. This is also the best way to visually
identify Beige G3 ROMs. OWC had a web page with a bunch of stuff
about the different circuit cards, but all one needs to do is read
the part number off of the chips to know which version is in hand.
There are a few ROMs out there built from EEPROM chips which may just
have chip manufacturer numbers on them and no Apple part numbers.
I've been told that these were development ROM modules which could be
reprogrammed either in the host machine or on a machine on the bench.
Jeff Walther
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