Apple II and III Pascal (and in consequence Lisa Pascal, but there was e.g. not UNIT or USES syntax in USCD) were indeed based on USCD Pascal, but ISO 10206 was a decade later as far as I remember.

There were other Pascals around with system programing extensions, quite a few were eventually standardized in ISO 10206 (1991).

http://pascal.hansotten.com/

And while the discussions keep going around Pascal and its extensions, there is this little detail of Modula-2 being released in 1978, where all the issues with Pascal (as originally designed by Wirth) for systems programming were already fixed.

Here I found an interesting Article by David Craig about where Lisa Pascal (and all the other Apple Pascal version) came from: https://www.applefritter.com/content/brief-history-apple-com...

Where Apple II and III Pascal was based on UCSD Pascal, Lisa Pascal was apparently directly based on Wirth's P4 compiler, not on UCSD Pascal. See page 4.

Great reference! Terrific to have a semi-original source, thoug I wish it included more detail and references.

> Therefore, Lisa Pascal lasted from 1981 to 1986, an eternity in the field of microcomputer languages.

;-)

> Tho (sic) Pascal will have the support of a small but vocal minority at Apple, C/C++ will be the dominant language for Apple and outsiders for the next decade.

RIP Pascal, you will not be forgotten - and you will live on as Delphi.

Yes, the first ETH Report about Modula-2 appeared in 1978, around the time Lisa Pascal was developed; the latter refers to the Jensen/Wirth 1975 Pascal edition. I don't know whether there were contacts between Apple and Wirth before Clascal. Not to forget that Tesler came from PARC where they had Mesa, so he had the same source as Wirth had.