David,

One evening in the machine room where I worked, I saw a listings binder
sitting on top of a 370/145. As always curious, I took a peek at the title.
It included the words "370 Emulation". My immediate reaction was to think
"What are you really?", sufficiently strong a reaction that I probably said
it out load :-)

Chris Mason

----- Original Message ----- 
From: "David Speake" <[EMAIL PROTECTED]>
Newsgroups: bit.listserv.ibm-main
To: <[email protected]>
Sent: Wednesday, 15 February, 2006 1:56 AM
Subject: Re: Mainframe Jobs Going Away


> This stimulates. Why should they not be able to run
> UNIX/LINEX/AS400/Alpha-VMS or even Windows on Z chips without Z/OS or VM.
I
> have no idea what the instruction set burned into the metal is like nor
how
> I/O is really done at the hardware level. The ONLY metal instruction I
know
> of is SIE and I saw that one here less than a month ago. Does only the
> milli/micro/nano code have to change for it to pretend to be anything
> desired? Does this level resemble S/360 decedents POP instructions at all?
I
> saw some S/370 micro code listings about 30 years ago, but... For all I
know
> the Z chips have the same "metal" instruction set as the Pentium X/Y/Z
> whatever. Pointers desired and apreciated.

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