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Quote from SC19-6203-2 VM/SP Release 3 System Programmer's Guide ( http://www.bitsavers.org/pdf/ibm/370/VM_SP/Release_3.0_Jul83/SC19-6203-2_VM_SP_System_Programmers_Guide_Release_3_Aug83.pdf ) page

The bREXX bug with literals in the parse template does not break running editor macros in general. If anybody knows of a XEDIT macro where this bug would change behaviour, I'd like to see it. I am

Hello Mark, Thank you for the link to the earlier message. As for the 3270: : Now start the 3270 emulator. : Feel free to replace this with your preferred terminal emulation program. cd WC3270 start

What 3270 emulator, on what OS, please? ... Mark S.

Rene gave an example in the following e-mail. I remembered reading it, and found it by searching via groups.io. /g/h390-vm/message/2601 I Hope This Helps ... Mark

BREXX in MVS 3.8j , and in VM/370 does not handle literals when you use PARSE ARG, or ARG. The problem was discussed in earlier e-mails: Rexx PARSE on VM/SP 5 behaves different from BRexx on VM/370 CE

Hello! <Me wearing a worn looking wide brimmed hat that's also worn by Indy Jones and a long scarf with special color patterns> Aaron, ideally the things that the OSTAILOR instructions are properly

If OSTAILOR was meant to help in OS development (which I agree it could come handy) it would be perfected by addition of EXT+ SVC+ PGM+ MCH+ commands to allow for tracing of all or selective codes.

Fish wrote: Hercules is a hardware emulator, not an operating system. According to the architecture, hardware's responsibility is to store ILC and interrupt code, and swap psws. Operating system would

Hey Mark, what do you mean by: ? BREXX still has a problem with parsing its command line, so that will be a challenge, in and of itself.“ The error in the parse statement or any other issue? Mike

From the purpose of someone who only runs a mature operating system, I can understand this perspective. However,... Absolutely agree 100%! I am aware of activiti

Joe, thank you for the explanation of WHY. While I worked many years as a systems programmer on MVS I was never an internals guy. My specialty was "networking" and related subsystems. Pretty much all

"I understand why the CS is being used. But WHY, MVS is doing this memory writability check still seems to be a mystery. Something must trigger MVS to use it. I guess once every 20 years its probably

Aaron Finerman wrote: Why not? What is your reasoning? Again, why? Why? Not always, but yes, I'll concede the point. Usually, yes. I would agree. But why can't Hercules issue a message as well? I

I don't know how this can be done, but it should be possible to strip out the pre-processor. From what I remember GCC 3.x could build itself on a 4MB Atari... Dave

Dave Wade wrote: [...] Which I still say is wrong! (Sort of.) I suppose using OSTAILOR QUIET is okay in the *interim* (for the time being) while efforts are under way to *fix* MVS(*) to *not* use the

I finally got back to email. Thanks everyone for clarifying the culprit, MVS! I got that. I do admit that once every two decades can be considered rare. I understand why the CS is being used. But WHY,

Hmmm... Must be timezone problems. :-) CS is an unprivileged instruction, so when MVS executes it, it causes a Not clear to me why it matters if an instruction program checks because of a protection

Harold Grovesteen wrote: It's not VM that's doing it: it's MVS (i.e. the VM guest). CS is an unprivileged instruction, so when MVS executes it, it causes a program check (which Hercules then logs).

Yeeesss... This has led to the anecdote that one IBM lab was toiling at phases and