Philip Belben wrote:
I have
sitting here in front of me a book, "Assembler for COBOL Programmers",
by one Hank Murphy. "MVS" and "VM" also appear on the cover.
Copyright date
is 1991. ISBN and other whatnot or more details available on request.
Is it about intel x86 assembly language, or mainframe (360?) assembler?
MVS (Multiple Virtual Storage) and VM (Virtual Machine) were S/370
things, iirc, not S/360. (And certainly not 80x86!) In fact I think
MVS needed something quite big like a 3081 to run it. 370/XA?
Somewhere, years ago, I got the impression that VM started as an internal
product during 360 development to allow multiple software development teams to
have their 'own' machine without having to supply all of them with real
hardware, and then found it's way out into customer use. (.. vague memory, so
don't take it as too strong an assertion).