On Thu, 12 Jun 2025 12:41:09 -0500, Charles Mills <[email protected]> wrote:

>On Thu, 12 Jun 2025 11:26:04 -0500, Jon Perryman <[email protected]> wrote:
>
>>Other than IBM, who uses bleeding edge instructions that can't wait for the 
>>HLASM update?
>
>Early testers?

Early testers of what? They received new microcode and z/OS that utilizes that 
new microcode. How many are writing HLASM using those instructions unless they 
are doing it out of curiosity or validating the updated POPS. I would hope that 
the opcodes had been updated by this point if they are validating the POPS.

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