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https://tinkerdifferent.com/resources/apple-service-technical-procedures-volume-six.78/ Nice, but not what I was asking. How much proprietary silicon remains to be reversed in order to do a New Build vs. Reloaded board with "knockoff components" in place of OEM silicon? IOW, how close have we...

Wow, that was quick, jj! :)

Wondering how far off "reloading" a board with reverse engineered hardware might be? Thinking in terms of a new build 128K/512K hybrid board that can go either way at boot, depending upon which side of the repurposed programmer's switch is held down. Has the Integrated Wozniak Machine been...

If there was ever any doubt as to who made these little beauties. :p

512K was the design goal of the Macintosh team. It was dialed back to only 128K by upper management to keep its price low, preserving high margins. The story is out there in Folklore as is the 512K hoax that was the 128K rollout. Could never get away with anything even close to that kind of...

What's the memory map limitation in ROM though? I'd wager on higher memory ceilings in 68000 based workstations . . . . . . but Apple. :p @max1zzz is knocking his head against just such a ceiling in the LCIII unleashed thread.

Thanks, good to know. Gotta get a new battery for mine and flush out some acid leakage to see if it still works. :oops:

There was none, the built in PMMU of 68030 upgrades enabled Connectix Compact Virtual's page swapping expanded virtual memory hijinks.

LOL! There you go, but I still can't forgive the blatant hucksterism of introducing said doorstop by total misrepresentation of a product's capabilities via shell game. Smacks of illegality to me. Best of luck, I let my Fat Mac slip away before the collecting bug bit me in the 90's. Went to a...

Yes, but I'm suggesting that it would be fun to be able to do it in a Macintosh Plus as most of us don't have 512K nor 128K at all much less as spares for playtime. A reloaded board with the unused DB25 port of the Plus broken out to headers inside the bucket, beyond the bar might also make for...

Got it, many thanks, what do you think was the problem? As s fellow lover of 128K limitation remediation, what are your thoughts on "restoring" 128K boards? Such are not "original? in any way shape or form as far as I'm concerned, merely re-borked to Scullied status. :rolleyes: A reloaded...

That makes sense to me now. Note that the ROM is installed backwards? Would the higher capacity ROM IC key align with the silk screen key as shown? Very strange, is the silk screen keyed at both ends?

Great thread, janjan! Looking forward to your Plus upgrade kit info. I've got a cattle branded Drexel 128k that was upgraded to Plus with a 16MHz Performer accelerator upgrade that brought it up to almost stock SE30/4MB configuration. The branding process means it was not a student's...

@Stephen your linked PDF appears to be damaged?

Indeed, it was a dream, all but totally useless without adding a second, external FDD to the "AIO" Computing Appliance for the rest of us. The eviscerated (Scullied) 128K was the introductory RoadApple sold to those who would become the faithful by an unscrupulous huckster. He introduced it in a...

Glad you like it, saw a LOT of use in the rug rat's bedroom. Quadra 630 was the heart of his home entertainment setup, homework station and I used the Q630 after he'd gone to sleep as needed for my working from home. Quadra 630/17" Sony Trinitron display and remote control of CDs from this...

Cool! Thanks for the info. Here's a shot of my early Q630's kit for comparison:

Thanks for the fix info, I think I'll still turn mine into a feature. :)

I was playing at making a 1/8" MacQuarium bubble, so that was the way to go at the time. Affordable LCDs were still a thing of the future in terms of availability/price point.

Older, take a bit longer view than that. I've learned that waiting for prototyping technology advances to become affordable at tinkerer levels pays off big time. That was a very hard won lesson. Started out when CNC was new and was blown away when stereo lithography came about. Over that last...