On Wed, 12 Nov 2008 13:17:09 -0800, Edward Jaffe <[EMAIL PROTECTED]> wrote:
<snip> >OK. There is that one command, used early in z/OS IPL, that is >deliberately disallowed on specialty engines to prevent users from >"accidentally" IPLing z/OS on them. (z/VM can IPL no problem because it >doesn't use that command.) But, my point is that there is no >optimization that allows them to process Linux for z instruction >streams, Java, or other specialty engine-eligible work any faster. > >-- >Edward E Jaffe I know that I won't be told, but I'll ask anyway. What is the instruction? Does it do anything other than "blow up" on an non-CP engine? I.e. does it have some side effect such that z/OS will fail if it is not issued? Is it only used once during IPL, or is it strategically placed in various modules so that it could not simply be "zapped out"? OK, I know that I could simply look at the Hercules emulation code to determine some of that. -- John ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
