Re: Much negativity, such wow
"this seems to contradict the statement that Apple had always planned to produce a 512kb model"
Jef Raskin, the guy who developed the Mac, never intended anything so idiotic as to cripple it with 128kb of non-upgradeable memory. Then some idiot hijacked the project and picked some random specifications that he said he knew could be done better. The RAM was one of them. He was completely, absolutely wrong. As usual.
"From memory, Jobs decided that the original Mac should be impossible to expand internally, but the engineers covertly ensured that it would be possible to produce one with more RAM without too much bother. Also from memory, that turned out to be useful because at the original Mac launch, the demos that Steve Jobs showed off needed a Mac with 512K, which the engineers could supply at least as a one-off."
So yes, with the project approaching D-Day (Because some idiot had hjiacked the project and the management had had enough of the delays that his fuckwittery was causing) the engineers did slip a means of quickly upgrading the RAM into the demo board.
The critical demo worked, the project was green-lit for production, the above-mentioned idiot fired the engineer who had actually made the damned thing work, and, as was his wont throughout his entire parasitic life, basked in other people's success.