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rayarachelian:
I don't think MacXL matters as it really has no standard for what it is other than the "Lisa is now MacXL" bundling/marketing of the same. These would all be converted units that shipped with MacWorks, some version of the System (likely 4 or 5) MacWrite, and MacPaint

A 2/10 can be an XL, as can a 2 or a 2/5 - there's no standard at all there.

From a hardware point of view, it's just a rebrand, and you're right, there's nothing signalling this in the serial number or AppleNet.

For sure a 3A ROM indicates that the machine in question can only run MacWorks, but that also removes the serial number from the VSROM (though not from the sticker obviously). Or at least if you go in service mode and check 240-280 you'll see zeroes for the SN.

Other things that are fuzzy MacXL indicators: the use of a 20MB or larger SunRem hard drive, or a SCSI card + drive.

But all of these criteria are fuzzy, and not crisp indicators, and there's nothing to prevent you from reversing those changes. i.e. replace 3A ROMs (and inline video transformer) with H and a normal rectangular-pixel VSROM, remove any SCSI cards + drives, and use ProFile/Widget (or modern day replacement) as appropriate, etc. and then install LOS.

As an aside, I think it's possible to install LOS (and most likely UniPlus/Xenix, etc.) on the SunRem 20MB, 30MB, 40MB drives, but only the first 10MB will be used, but you should be able to share the drive with MacWorks in most cases. I've not tried this on actual hardware, just in LisaEm by having larger drives, and it does seem to install and work, but it will ignore the rest of the drive.

tl;dr I don't know if it's worth adding a column for 3A ROM (or for MacXL) to the spreadsheet, but we won't have data for existing entries.

Lisa2:

--- Quote from: rayarachelian on August 04, 2021, 11:05:46 am ---I don't know if the WD2001 and AM9512 are pin compatible or not
--- End quote ---

They are not pin compatible, the AM9512 uses a 24 pin package, the WD2001 uses a 28 pin package. 

Rick

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