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From: mattd@Apple.COM (Matt Deatherage)
Newsgroups: comp.sys.apple2
Subject: Re: RAM expansion questions
Message-ID: <44097@apple.Apple.COM>
Date: 20 Aug 90 07:04:01 GMT
References: <4023@crash.cts.com>
Organization: Apple Computer Inc, Cupertino, CA
Lines: 28

In article <4023@crash.cts.com> johns@pro-library.cts.com (John Sparkman) writes:
>In-Reply-To: message from gwyn@smoke.BRL.MIL
>
>What are the advantages in upgrading from a ROM 01 to a ROM 03?
>
>John

Again, for those playing along at home, there is NO UPGRADE from ROM 01 to ROM
03.  You can buy a new ROM 3 machine and sell your ROM 1 machine, but this
doesn't qualify as an "upgrade" in my book.

Advantages?  Not many.  The ROM 3 machine has 1 MB of RAM on the motherboard
and some more of the tools in ROM, which require more patches by the system
software so the available RAM decreases, although not as much as loading the
entire tools from disk.  ROM 3 also has hardware shadowing of text page 2,
built-in universal access features like keyboard mouse and sticky keys, a
different RAM disk toolset that only allows one RAM disk size (no minimum and
maximum), slightly improved sound circuitry (less interference) and a hardware
jumper to keep people out of the text-based control panel CDA.

For the full run-down, see Apple IIgs TN #26.

-- 
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Matt Deatherage, Apple Computer, Inc. | "The opinions represented here are
Developer Technical Support, Apple II |  not necessarily those of Apple
Group.  Personal mail only, please.   |  Computer, Inc.  Remember that."
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