DMKSSS12 ---Set--the IOBFLT flag, indicating that a cylinder fault is being
resolved. Chain the IOBLOK from the REDEVFIOE field in the RDEVBLOK. Build a TRQBLOK to recognize missing attenticn interruptions and put
it on the timer queue. Exit to the dispatcher. PROCESS AN ATTENTION INTERRUPT FRO! A 3330V Entry to process unsolicited I/O interrupts. If the interrupt is an attention, the device is a 3330V, and it is
not dedicated as a 3330V. Call DMKSSSl1 to restart I/O. DMKSSSl1 ---Pind-each IOBLOK for this device that
the associated timer queue element
queue. Turn off IOBFLT so that the
device is available.
has the IOBFLT flag set. Find
and remove it fro. the timer IOBLOK can be restarted when the
1-426 IBM VM/370 System Logic and Problem Determination--Volume 1

A abend abnormal termination (abend» abnormal termination (abend), CP, codes 1-406 accounting card, generating 1-63
accounting records, processing 1-144
address, translation, virtual-to-real 1-24
affinity, in attached processor mode 1-34
allocation
cylinder 1-112
management 1-105 of D!SD space of storage 1-203 page frame, free storage 1-122
slot 1-111
alternate path I/O 1-92
alternate track
control flow 1-168 hardware operations 1-167 module function 1-168
recovery CP I/O 1-169
Diagnose I/O 1-169 ERP 1-166 3340 support 1-166
assigning, dedicated channels to virtual machine 1-7
assignments, RMS Control Register 1-152
attached processor 1-172
external interrupts 1-178
initialization 1-172 PSA set-up 1-172 I/O subsystem 1-179
locking 1-173
global system lock 1-173
user-defined locks VMBLOK lock 1-173 machine check handler 1-174
shared segment 1-180 varvina offline 1-73
attachlng-
real devices 1-125
virtual devices 1-6
virtual machine to the system 1-123, 1-211
attributes, spool file 1-145
B
binary synchronous line
data formats 1-103 enabling/disabling, remote 3270 1-201 error recovery, 3270 1-202 I/O programs for 1-99
C
calling DMKFREE for a large block 1-121
for a subpool 1-121 DMKFRET for a large block 1-122
for a subpool 1-121
CCH (channel check handler) 1-149 overview 1-157
subroutines
channel control 1-158
channel error analysis 1-159
changes, user status 1-132 Index chan,nel, dedicated, support 1-96
channel check handler (see CCH (channel
check handler» - channel check interrupt, processing of
1-222
channel errors, DASD 1-164
channel program, modification 1-60 channel-to-channel adapter, virtual 1-86
checkpoint, spool file, recovery of closed
1-225
class, privilege 1-9
clearing, recording area 1-163
clock interrupt reflection 1-184
closed, checkpointed spool files, recovery
of 1-225
closing
virtual machine input files 1-217
virtual output files 1-216
cold start 1-14
commands commands)
communication, inter-virtual machine 1-225
component states, I/O 1-89
console
functions CP (Control prograaj, console functions)
scheduling 1-198 simulation, virtual 1-192 COHTASK data, processing of 1-197 COHTASK interrupt, control, processing of
1-198
control block, I/O, real 1-83
control block relationships, VBCF 1-43
Control Program CP (Control Program» control program assist 1-37,1-409,1-416 described 1-416
exceptions to 1-420 instruction format 1-416
instruction/function cross-reference
list 1-419
using to turn off functions 1-419
Index 1-427