I want to make all RS/6000 customers aware of a vital and exceptional new
redbook on RS/6000 systems.  It is "RS/6000 Systems Handbook", available
at http://www.redbooks.ibm.com/.  The folks who labored on this put in an
extraordinary effort, producing a 600-page reference of great value.
ADSMers concerned with performance will appreciate these samples...

p.259 on adapter placement:
        "Several PCI machines have secondary PCI buses bridged onto a primary
        PCI bus. Some medium- to high-speed adapters perform slower on these
        secondary bus slots...".

p.495, Adapter Placement Guide, regarding some systems:
        "If a 33 MHz adapter is plugged into a 50 MHz 64-bit slot, the slot
        switches to 33 MHz and also switches the remaining slots on this PCI
        bus to 33 MHz."

This should be a basic reference book for anyone selecting and implementing
RS/6000 systems.

   Richard Sims, BU