OK, I hope I'm not becoming wearisome with my yammering. But I am not too busy 
right now. And I still really like and respect the z architecture (despite its 
horrendous price).

I ask about the CPU cost of an EX because that same program that I'm working on 
uses the EX a fair amount to move "variable length" strings into a 
blank-initialized area for reporting purposes. Instead of EX of an MVC, I could 
use MVCL or MVCLE. But many have said that EX of an MVC is less overhead than 
MVCL in many cases. Especially since I know that my length is always no more 
than 255 characters. I check and report an error if the length is 256 or more.

As an aside, to whomever it was who recommended the TROO as a way to move bytes 
from an input area to an output area, while testing for "unprintable" bytes - 
thanks! It made my code much easier to write and understand. I was going to use 
a TRT and an EX'd MVC in a loop. A TROO in a loop was super easy to code.


--
John McKown
Systems Engineer IV
IT

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