Su •• ary of Aaendaents
for SY20-0886-0 as updated by TNL SN25-0467 V8/370 Release 5 PLC 12 VARY PROCESSOR ONLINE/OFFLINE SUPPORT programming Support V8/370 attached processor CAP) provides
support to enhance the reliability,
availability, and serviceability of the
158 and 168 attached processors, and the
158 and 168 asymmetric 8P systems. allv.s attached processor to be taken offline to make needed repairs, and then be brought back
online without affecting the main processor.
xii IBM VM/370 System Logic and Problem Determination--Voluae 1

3340/3344 ALTERNATE TRACK SUPPORT Changed: Program Support
Software error recovery procedures BU. provide for switching to an alternate
track an atteapt to do I/O on a
defective 3340 or 3344 track results in a track condition check. Logic
affecting CP I/O, Diagnose I/O, and SIO issued from a virtual machine is
changed. These logic changes are
reflected in this publication. summary of Amendments
for SY20-0886-0 as updated by TNL S125-0446 V!/310 Release 5 PLC 6 Summary of Amendments xiii