Re: Help Identify Possible ROM 0 Apple IIgs

[Wayne Stewart <waynes@intergate.ca>]

Rich Beaudry wrote:
> 
> Hello all,
> 
> In helping a local school sell off some old computers (see
> comp.sys.apple2.marketplace), I found three Apple IIgs CPUs that are a
> bit odd to me.  Here are the oddities:
> 
> - Upon powerup, only a simple "Apple IIgs" appears at the top of the
> screen.  No copyright notice at the bottom, and no ROM version number
> at the bottom.
> 
> - The sticker on the bottom only says "Copyright Apple Computer,
> Inc."... blah blah blah... Every ROM 01 that I've seen has "Copyright
> 1987 Apple Computer, Inc.", and every ROM 3 that I've seen has
> "Copyright 1989 Apple Computer, Inc."
> 
> - The ROM chip (only one) next to the CPU says "342-0077-A", and
> "Copyright Apple 78,81,83,86"  The ROM 01 machine I've seen say
> "342-0077-B", and "Copyright Apple 78,81,83,86,87".
> 
> - The CPU is the same part number as some ROM 01s, but has a "-3" at
> the end, not a "-4" as in other ROM 01 machines
> 
> Is this a ROM 0 Apple IIgs?
> 
> Any ideas on how many were made?
> 
> Any offers? :-)
> 
> Thanks for any information you can provide....
> 
> Rich B.

The rest of the chip numbers aren't relevant.
If it has a 342-0077-A, it's a ROM 0
If it has a 342-0077-B. it's a ROM 1

The numbers on the VGC may be relevant though as some were defective. 
The part numbers of the defective ones were 344S0046-1 and 344S0046-A.
Anything else is good

	Wayne