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We don't know how the Cylinder field is filled. If a LH from a 2 bytes field was used, it would sign extend the high order bit of x'1' from 32K+1 to 64K. <Mike.A.Schwab@...> wrote:

The Multiply uses the register as a signed field. Is there a Multiply Logical? non eav have Count records with x'CCCCHHHHRR' 3390s EAV have Count records with x'ccccCCChRR' where the

On Fri, Jan 17, 2025 at 12:17?AM Fish Fish via groups.io [deleted] IBM ESS F20+ could have any number of cylinders from 1 to 64K. And you would often get some odd amount of space at the end of a

Andrew wrote: <snip> Thank you, Andrew! Much appreciated. Of course, I was hoping for a more detail (small baby steps!) so that someone who has ZERO practical knowledge/experience with z/OS (like

Mike Schwab wrote: According to what I'm seeing in the source code for the CCKDDU64 program (one of the files in Herc's "cckddump-cckdload.zip" file in the 'util' subdirectory), it's actually a

3390-54 isn't EAV, is jsut twice the size of a 3390-27

Brian Westerman wrote: [...] What model dasd of dasd has 60102 cylinders?! A 3390-54 is supposed to have 65520 cylinders! -- "Fish" (David B. Trout) Software Development

A 3390-54 has 65520 cylinders; a -27 has half that number. [email protected]> wrote:

Is the number of cylinders 2 bytes signed? 2 bytes logical can get you to 64k. And if you want EAV you are going to need more bytes. Right now it is 16 *64k = 1M (849G) for the current z/OS. Cylinder

I got those same results. <Brian_Westerman@...> wrote:

Well, It doesn't seem to work for 3390-54, (it abends with a USER=99, but no text as to why), the last thing printed is: cckddump 0.3.1 starting main workarea is at address 0x15f36000, 24-bit workarea

Hi, REVIEW release 51.6 is out now. I finally got around to displaying program link edit dates and times in the member list, so a SORT CHA is now possible. A bit of fun if you're interested in that

The steps to use CCKDDU64 are fairly straightforward. 1) Once-off build/preparation of the CCKDDU64 load module. 2) Execute CCKDDU64 (batch job) to dump a volume. 3) Binary FTP the resulting output

Do you have a copy of the CCKDDU64 load module that works that you can share?? Alternatively, if you can explain the process you used to assemble/link it on the mainframe side that would be great

I meant the mechanics or process of dumping a volume on a "real" mainframe z/OS in some format that I can transfer that volume to be used under Hercules z/OS.

Andrew wrote: Wow! That's good to know, Andrew! Thanks for that! Can you briefly document for us how you do it? As I understand it, you have to first get the CCKDDU64 assembler source code (from

If it was on emulation, he'd already have a DASD image to work with. At least in my case, it's a real machine. [email protected]> wrote: -- Jay Maynard

Hello Jay, thanks for your thoughts. Am 15.01.2025 um 12:37 schrieb Jay Maynard via groups.io <jaymaynard@...>: Are we talking about z/OS on emulation or a real machine? This

He's looking to take a full volume, 3390-x (where x>3), from a running z/OS system and wind up with it as a DASD image he can feed to Hercules. I'm looking to do the same thing, myself, so have been

Hello Brian, Am 15.01.2025 um 07:53 schrieb Brian_Westerman via groups.io <Brian_Westerman@...>: You did not yet clarify what you mean with this sentence. I asked for details