Re: ROM versions

From: Jerome Vernet <vernet.jerome_at_email.domain.hidden>
Date: Wed, 23 Nov 2005 17:47:09 +0100


To what I read, the ROM version is in two part: CPU ROM/IO ROM

So, D/A8 seams to be for an upgraded Lisa 1 to Lisa 2 (that what mine is, according to it's last owner). H/A8 stand for a Lisa 2/5.

One thing about my Lisa: the guy who sell it to me -about 250$- said that they trashed, 2 years ago, 10 Lisa, at least two of them was Lisa 1, the rest was upgraded Lisa. They also trashed all the parts that was before the upgrade, CPU, card, Twiggy drives, Profile, printer....

Argh...

Jerome

Le 23 nov. 05, 01:36, Scott Lewis a crit :

> 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 09:02:39

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