>It could be as simple as "the current >systems are so fast that maintaining the microcode and the microcode >space is no longer cost effective."
Right on target. These were never instructions intended for use other than by the operating system, and the operating system no longer needed them (due to the speed situation) and (for example) it was not cost-effective to enhance them for z/Architecture. Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- 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
