Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!husc6!m2c!wpi!dseah
From: dseah@wpi.wpi.edu (David I Seah)
Newsgroups: comp.sys.apple
Subject: Re: New GS ROMs
Message-ID: <3561@wpi.wpi.edu>
Date: 17 Aug 89 09:41:19 GMT
References: <237@ualtamts.BITNET>
Reply-To: dseah@wpi.wpi.edu (David I Seah)
Organization: Worcester Polytechnic Institute, Worcester, MA. USA
Lines: 25

In article <237@ualtamts.BITNET> userDBUG@ualtamts.BITNET (Dan Berry) writes:
>First off, with people referring to "ROM 3", I'm assuming that
>they actually mean "Version 2", as compared to versions 0..1.
>Secondly, out of curiousity (really!), unless they drastically
>changed some key functions on the M.B., couldn't you simply make
>a duplication of the "ver2" ROMs and stick them into the older
>motherboards?

From what I've been reading on AppleLink-Personal Edition, they are
calling new ROM "ROM 3" to avoid the confusion with previous ROMs.
You know...ROM 01 is actually the upgrade...or is it the first
revision?  It is?  Well what is the new ROM then, ROM 2?  No no
no...now the ROMs will be in order of appearance!  I guess Apple was
inspired by the Star Wars numbering scheme :-)

Secondly, the new ROM in the enhanced GS motherboard is a 256K ROM.
We have 128K ROMs in our motherboards.  While the number of pins may
be the same, I'm sure that the internal organization of the ROM (in
terms of rows and columns and all that great stuff) is incompatible
with current motherboards.  Some feature of the enhanced GS (like
Sticky Shift and mouse stuff) are implemented in an expanded ADB controller
ROM.  I think that is a separate chip...never heard of it before.

Dave Seah | O M N I D Y N E  S Y S T E M S - M |   Internet: dseah@wpi.wpi.edu 
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