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Re: Updating DMKRIO on VM370 CE #VMCE


 

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Ok so just in case despite there being no VTAM, TCAM, OR PASSTHRU in vm/370 ce you do want to mess lets look at this.

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So DMKRIO is assembler source, so it needs to be assembled and then re-linked into the nucleus which is fiddly and then re-ipl to pick up new nucleus

So yes ¡°VMSETUP CP¡± leaves 094 accessed as a read mode disk.

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ACCESS 094 F

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Makes it read/write

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COPY DMKRIO ASSEMBLE F = ASMORG =

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Backs up DMKRIO SO YOU CAN EDIT SAFELY.

VMFASM DMKRIO DMKHRC

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Assembles it using the correct MACLIBs but leaves the output DMKRIO TEXT deck on the ¡°A¡± disk.

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COPY DMKRIO TEXT F = TXTORG =

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Backs this up.

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COPY DMKRIO TEXT A = = F (REPL

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Puts the new one on the 094

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ERASE DMKRIO TEXT A

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Cleans up A disk¡­

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Then run VMSETUP CP to put the disk access modes back as expected.

Then re-build the nuclease as from step 4 in MAINT MEMO¡­

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Dave

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From: [email protected] <[email protected]> On Behalf Of alejandro.olivan.alvarez@...
Sent: Tuesday, April 25, 2023 12:06 PM
To: [email protected]
Subject: Re: [h390-vm] Updating DMKRIO on VM370 CE #VMCE

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Hi!

mmmm... this route looks familiar to me since, in fact, I tried my first backup and then EE edition of DMKRIO (I simply did ACCESS 094 C) ... just to find that the thing does not have any efect per-se, but rather the reassemble procedure was needed.

But still, I guess that doing VMFASM DMKRIO DMKHRC is not 'that easy'... I mean

In order to do VMFASM, I need to do perform an EXEC VMSETUP CP isn'it?
Or does DMKHRC look for a DMKRIO ASSEMBLE file at maint's A?
In fact, I recall that upon doing the VMSETUP CP command, disk 094 gets 'mounted' (Linux jargon here, sorry, don't know how to call that) on E/F Read/Only... are changes expected therefore to be done on copies at A?

Thank you for your help!
Cheers

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