>It is difficult for me to understand why the processor >would be significantly slower when running AMODE 64.
As I see it, the processor is not slower, but there is more data to reference such as 8-byte pointers instead of 4-byte pointers (and the fact that many of the instructions are "longer" -- 6-byte). Those can both cause worse performance due to fewer things being in the cache. Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
