i may have found previously undocumented clone mac roms
@mavica_again PLEASE TELL ME YOU HAVE A LINK
@DosFox i found it online in an archive of some disks dumped some 20 years ago that just went overlooked. a bunch of the discs contain personal information including MacVision scans of photos of probably someone's kids. i'm trying to dissect this further with some people more familiar to it (i've found who had the disks originally) before i post files
@DosFox but, if your google-fu is good enough, you'll find it just as i did. all my work here so far was internet sleuthing and being natively Brazilian.
@mavica_again ah Sheesh, if there's anything that looks like other Unitron documentation - let me know.
@DosFox unfortunately the disks were badly damaged (full of mold, 20 years ago) and the stuff that was more interesting (source code, documentation) might be all gone. the ones that survived were mostly disks used well after Unitron's dissolution by family members, personal files and copied retail software from the US
@mavica_again ah - nothing that looks like PAL equations? 😅
@mavica_again actually they weren't.
That was the "turbo Mac" project which were separate to the original PALs
@DosFox far as i understand, Unitron only had one Mac project, the Mac512 which later evolved into Unitron 1024. the PALs were meant to go on these machines, but the project got shut down. Mac512 was supposed to be the "turbo" one, there was no other model
@mavica_again
The Unitron 512 was launched in 1985.
Jecel became involved in 1987:
http://www.merlintec.com/lsi/mac512.html
As far as I know Unitron 512s existed as a commercial product
@DosFox I can tell you the Mac512 project was never legally commercially available. SEI never approved the project. And I'm actually in Brazil, so.
@mavica_again I've been in contact with Jecel before, we could ask him!
@DosFox the technical study of the Mac512 to determine its legality wasn't even ordered until 1987. it never went to market, it would've been illegal for it to do so. Unitron posted ads in early 1988 and SEI shut the project down.
@mavica_again
I'm happy to be wrong about if the Unitron 512 was ever legally for sale - my original point is that the Unitron 512 worked before Jecel was brought on, meaning Unitron used other PAL equations - which I wouldn't mind having a look at!
@DosFox Jecel says it himself in his page they're just copies of the Apple PALs.
@mavica_again we can rely on his memory, sure ;)
Joking aside - even then a full set of equations for the PALs don't exist at the moment. Wondering if there was another lead!
@DosFox or we can rely on the legal study from 2003 which has sources mentioning that the case was stuck with SEI until march 1988 https://www.abphe.org.br/arquivos/2003_ivan_costa_marques_caso-unitron-e-condicoes-de-inovacao-tecnologica-no-brasil.pdf