Re: Question about Apple ][ ROM chips!

[sark314@hotmail.com (Charles Forbin)]

markREMOVE@syndicomm.com (Mark Percival) wrote in message news:<3b95730a.5638064@news.videotron.ca>...

(in reference to my motherboard serials of 8001 and 8031)

> These hand written numbers is the year and week of the year these
> boards rolled off Apple's assembly line.  Week one of 1980 (January)
> and week 31 of 1980 (July) respectively.  Both would be II+ vintage
> motherboards of different revisions.

I've been doing a little more research, and I've found that the 8001
motherboard is definitely *not* the one that originally came with the
case.  The serial number on the bottom of the case is A2S1-2067,
which, according to

http://member.nifty.ne.jp/apple2tree/wnew/whatnew2.htm

makes the case that of one of the earliest ][ models, too early for
the original board to have been a Rev 4 (the one in it now).  However,
as far as the board itself is concerned, I've run across this auction
on eBay:

http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1279383811

and am seeing what is purported to be a standard ][ with a motherboard
serial of *8012*.  The seller has an image up of the case's bottom
label, in which "A2S0016" is checked; I compared it with a list I
found on a cached Google site (the URL is obscenely long):

A2S0016: Apple ][, 16K
A2S0032: 32K
A2S0048: 48K
A2S1016: Apple ][+, 16K

These designations are in agreement with the first URL I've given
here.  What I'm thinking at this point is that the eBay guy has a very
late-model standard Apple ][ with the second label (the one with three
boxes to checkmark), one that was made in 1980, assuming the board
wasn't swapped.  If this is true, then is it possible my 8001 board
was *not* originally part of a ][+, and is hence simply a replacement
][ board?  The reason I am persisting in this investigation is that I
find the lines between ][/][+ very fuzzy between 1979 and 1980, in
regards to exactly when the ][ was discontinued and the ][+
exclusively made (other than the /// of course).  This makes it
difficult to determine what hardware was common to both, particularly
motherboard revisions.