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z/VM (Re: IPLing MVS 3.8J on non-00 LPAR CP

by Charles Durrett :: Rate this Message:

--- In hercules-390@..., Mike Schwab <Mike.A.Schwab@...> wrote:

>
> On Mon, Sep 12, 2011 at 7:57 PM, Charles Durrett
> <charles.durrett@...> wrote:
> >
> >
> >
> > --- In hercules-390@..., Tony Harminc <tharminc@> wrote:
> >>
> >> On 12 September 2011 19:28, Charles Durrett <charles.durrett@> wrote:
> >> ...
> >
> >>
> >> Have you considered running zLinux on the z890, and Hercules under
> >> that, providing 370 mode for your MVS 3.8?
> >
> > No I didn't consider that. I'm actually more interested in going backward that forward.
> >
> > It would offend my engineering aesthetics to run on a late model OS/360-heritage box a "PDP-11" (the 'c' language is a pre-processor for the PDP-11 assembler you know :-) ) emulator, aka zLinux, running an S/370 emulator, aka HERCULES, in order to run MVS.
> >
> > I'd rather twiddle millicode or put a thin software layer on the z890 to get it to behave.
> >
> How about the trial z/VM with an home brew I/O translator to support
> S/370 channels?
>

That would be more like it than would zLinux. I liked VM a lot back in the late 80's. Though I hadn't a chance to do a much with it then I wouldn't mind renewing the acquaintance. Its "heart" was in the right place.

I don't know yet what the strings would be on "trial z/VM" - wouldn't want to misrepresent.

> >>
> >> And, uh, do you have DASD on your machine?
> >
> > Heh. No. Assembling parts. (And wondering if it is possible to get the z890 Service Elements to provide the same sort of Basic Emulated IO that they could for the Multiprise series.)
> >
> The IBM ESS F20 are getting dropped from support 12/2012 so they
> should be getting cheap.

"You are going to need a bigger garage."[1] I've had my eye on things like that but was hoping for something smaller.

>
> >> Tony H.
> >>
> >
> > Chuck
> >
> >
> >
...
>
>
> --
> Mike A Schwab, Springfield IL USA
> Where do Forest Rangers go to get away from it all?
>

Chuck

[1] ESS was also known as "Shark".

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