for the LW Plus completeists, there is an upgrade rom set on ebay that hasn't been dumped but I don't feel like spending $100 for it.
it looks like one with just higher density roms
https://www.ebay.com/itm/275994554509
It is possible to dump them. I've had an original LaserJet PCB for a while now that I've been meaning to dump.
The firmware is much smaller than Apples
It won't, no matter what a random reporter claimed from quoting me out
of context from a message on a private mailing list five years ago.
Getting Apple to release the code means we abide by their rules.
"I find the phrase 'trade secrets of the computer history museum' unreasonably amusing"...
Development flash roms existed. You needed a "Flash Gordon" Quadra PDS card to program them. I have a box with dozens of them I'd take an offer for in a private message. It's what we used for ROM development in all the first generation PCI machines
I'm not sure what makes the Lisa's MMU a "crude hardware circuit"; what doesn't it do that would be a necessary part of the basic requirements of a "full memory management unit"?
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Lisa has a base-bounds segmented MMU, like the 68451, The SUN used a two-level segment-page mmu that allowed for...