> On 12 September 2011 20:18, Charles Durrett <charles.durrett@...> wrote:
> > --- 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?
> You're mixing the z890 and Hercules. Merely specifying a CPU model of
> 2086 doesn't make Hercules behave like a real z890.
True. But how much like a real z890 would Hercules act like and what does that tell me about the real z890 I have sitting in the next room?
A lot it turns out.
> > Time and tinkering will tell...
> And some additional hardware, I think. Without DASD you're not going
> to be IPLing much on the real iron.
Also true. I have most of a DS 6000 here too. It'd IPL zVM or zLinux I think but for business reasons IBM didn't include DASD emulation in the controller's software. (For that matter there's a whole processor in the CP Book just for IO that could easily do DASD emulation. Ah well.)