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no 370 mode (Re: IPLing MVS 3.8J on non-00 LPAR CP

by Charles Durrett :: Rate this Message:

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--- In hercules-390@..., Tony Harminc <tharminc@...> wrote:
>
> On 12 September 2011 19:28, Charles Durrett <charles.durrett@...> wrote:
> > I've recently acquired a z890 on the secondary market and while I figure out how to power it up I'm using HERCULES (3.07) to familiarize myself with what my software options would be.
>
> MVS 3.8 ain't gonna run on a z890 no matter how you configure it. That
> machine doesn't have a 370 mode.

Yeah, I heard that.   The z890 Systems Overview (SA22-6832-03) states:

...
Basic mode
   Only LPAR mode is available.
...

That's why I was 'surprised' when MVS 3.8J IPLed from CPU 00.   While ZZSA was also running on CPU 03.   Maybe CPU 00 is a pseudo-Basic mode while maintaining the integrity of the rest of the LPAR?

Time and tinkering will tell...

>
> ...
>
> Tony H.
>


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