Re: ROM versions

From: Guido Deiana <guido_at_email.domain.hidden>
Date: Wed, 23 Nov 2005 14:18:55 +0100

Hi,
my Lisa 1 too :-)

Guido

At 01.36 23/11/2005, you wrote:
>Hi all,
>Rev. D is a Twiggy ROM. My Lisa 1 comes up with D/40 during bootup.
>
>Scott
>
>On Nov 20, 2005, at 6:06 AM, James MacPhail wrote:
>
>>>This second board as a different ROM version (H/A8) athough the first
>>>one is D/A8.
>>
>>The "H" is the CPU board ROM version. The "A8" is the I/O board ROM
>>version.
>>
>>I believe Rev. D is the first version released to support the
>>single 3.5"
>>floppy drive configuration (ie. the Lisa 2). Earlier revisions were
>>for the
>>dual 5" "twiggy" drive configuration (ie. the Lisa 1).
>>
>>Rev. H is the last version that will run the Lisa Office System.
>>
>>After that, there is a 3A version (which is part of the Macintosh
>>XL screen
>>modification kit). This changes the screen resolution to provide
>>square
>>pixels so that Macintosh software looks more like a Macintosh. With
>>the 3A
>>ROM version installed you cannot run the Lisa Office System.
>>
>>The various MacWorks Plus and MacWorks Plus II versions work with
>>both 3A
>>and H ROM versions (and possibly D-G too).
>>
>>MacWorks XL 3.0 comes in two varieties -- you have to use the one that
>>corresponds to the square pixel rev. 3A ROM if that is installed.
>>
>>>Is there any real differences ? Which one is better ?
>>>When started with the H/A8 board, the Lisa will only ask to boot on
>>>drive 2, although it let choose Drive 1 (which does'nt exist ?) and
>>>Drive 2.
>>
>>The "ghost of Floppy 1" in the "Startup From" menu is, I think the
>>only
>>obvious difference. I don't recall off-hand what other "bug fixes"
>>there
>>are. I would suggest using Rev H or 3A.
>>
>>Maybe someone else has a list of the ROM differences handy?
>>
>>James
>>
>>James MacPhail "Think not of engineering as art,
>>uo957_at_email.domain.hidden but of art as engineering"
>>Sigma Seven Systems Ltd.
>>james_at_email.domain.hidden <http://SigmaSevenSystems.com>
>>
>>
>>
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Received on 2005-11-23 05:33:28