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Hello, What is the command (or proper method) to look at the VM/CE source? I mean the based code with the updates? How do I save changes I make in base delta form? (Base new update?) Is the a method

Which as I read more of the code, realized I'm still NOT in the know :-( Sorry for the incorrect information. ... Mark S.

Which for those of us a bit behind the know, see ... Run: vmsetup cp then: l DMKSCH * * DMKSCH?? AUXHRC?? F1 DMKSCH?? HRC066DK F1 DMKSCH?? TXTHRC?? F1 DMKSCH?? TEXT???? G1 DMKSCH??

I think changes to Hercules should go the Hercules-30 list please… Dave Sent: 04 December 2022 17:16 To: [email protected] Subject: Re: [h390-vm] Can a VM machine ... Hercules should make better use

Hercules should make better use of Diagnose 0, which it supports. At least, it should provide the correct release number. There are many bits available that could be mapped into Hercules features and

On Sat, 2022-12-03 at 15:10 -0800, David Durand wrote: > > > > From: Bertram Moshier > > 12:12pm #4785 > > > > > > > > > > > > Hi, > > > > IMHO, it isn't Hercules responsibility to handle the DIAG8CMD

If you also looked at the source for HCP it already checks it's running under Hercules or as a level-2 VM. Dave

David Durand wrote: [...] FWIW, I agree. We already have that: HHC00801I Processor CP00: Specification exception interruption code 0006 ilc 4 HHC02269I GR00=00000000 GR01=00000000 GR02=00000280

I'm not going to push this much farther, as it's just an idea, but your description does not necessarily match what the real machines would do, because the state of a machine after a diagnose command

I wrote a simple EXEC to do steps 1-2B. See below. type cperep01 exec a &CONTROL CMS FILEDEF ACCDEV DISK CPEREP REPORT A &STACK CLEAR &STACK CPEREP &EXIT I Hope This Helps ... Mark S.

Bertram, Its not available to general users. There are lots of things non-general users can do to break VM. I normally assume some one logged into OPERATOR or MAIIN knows what they are doing. Dave

Anyone can open an issue about the HCP command behavior when the Hercules setting causes a VMCE abend at: https://github.com/s390guy/vm370/issues Bob Bolch wrote:

Hi, IMHO, it isn't Hercules responsibility to handle the DIAG8CMD OFF beyond a program check. It is the responsibility of the OS issuing the DIAG to Hercules. Why? It is how it would work with real

David Durand wrote: [...] <nit> A program interrupt code 006 is a specification exception. </nit> -- "Fish" (David B. Trout) Software Development Laboratories http://www.softdevlabs.com mail:

David Durand wrote: * https://www.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP4361.html "New 4361 standard features" " * Programmable Power-Off -- enables the user to turn off the processor

Instead of guessing what is going on has anyone looked at the dump that was produced? Laddie Hanus

Cool! I've just never seen doc about that. yep.

David Durand wrote: Quite true. That's why IBM says not to use it: unless you code VERY carefully (check you model, etc) you can't be sure of what it'll do. The same DIAG instruction on one model

From an emulation point of view, the current behavior is reasonable, since the actual action of a diagnose instruction executed in supervisor mode is completely undefined, and could even potentially