Mod2 and Mod3 were done in DEC research group, mostly by from ex-PARC folks
that had done Cedar et al
I can't say for sure, but I think the one I have (which I posted to this
group a while ago) descends from Niklaus himself.
From the MVCOMPILER.MOD file -
(****************************************
* *
* MODULA-2 Multi-Pass Compiler *
* **************************** *
* *
* VAX/VMS Implementation *
* *
* *
* MVCompiler: *
* *
* private part of the common base *
* of the Modula-2 compiler *
* *
* Version 3.1 of 1-FEB-1983 *
* *
* *
* *
* Based on PDP11 Implementation: *
* Version M22 of 17.03.81 *
* *
* Institut fuer Informatik *
* ETH-Zuerich *
* CH-8092 Zuerich *
* *
****************************************)
Bob