abnormal termination, dump 506 advantages 209 affinity 34,218
configuring I/O 219
debugging 219
lockwords 220 PSA 220 trace table 220 fetching and storing 213
identify processor address 210 locking 214
locks
prefixing 209 real I/O interrupts 23
shared segments 218
signaling 211
SIGNAL macro 211
special code in CP 208 storage 209 synchronous interrupts 23
time-of-day clock 213
virtual machine I/O management 10 mUltisystem communication 42
MVS/system extensions support 45
common segment facility 46
enabling 47
low address protection 46
special operations and instructions 46
N
named system
allocating DASD space 73
generating 73 SPB card 73
using NAMESYS macro 73
saved system 73
SA VESYS command 74
saving or loading a 3800 258
shared segments 75
system name table (DMKSNT) 73 NAMENCP macro
for 370X control program 81
NAMESYS macro
for saved systems 73
native mode, switching to or from 47 NOTE macro 378
nucleus (CMS) 318 NUCON (nucleus constant area) 532
o OPEN/OPENJ macro 375
options
performance
affinity 34
favored execution 30 locked pages 27
multiple shadow table support 35
priority 31
queue drop elimination 36
reserved page frames 28,32
shadow table bypass 35
small CP 7
virtual machine 29
virtual machine assist feature 37
virtual=real 6, 28, 32 OS (Operating System)
abnormal termination
messages 469
procedure 481
access method, support of 379
data management simulation 370 data sets
accessing 383
defining 384
reading 383
formatted files 379
GET 381
handling
files on CMS disks 370 files on OS or DOS disks 370 macros 370 ABEND 374
ATTACH 376
BLDL 374 BSP 378
CHAP 376
CHECK 378
CHKPT 377 CLOSE/TCLOSE 375
DCB 379
DELETE 374
DEQ 376
descriptions of 373
DETACH 377
DEVTYPE 375
ENQ 377
EXIT/RETURN 373
EXTRACT 376 FEOV 375
FIND 375
FREEDBUF 377
FREEMAIN 373
GETMAIN 373
GETMAIN/FREEMAIN 374 GETPOOL/FREEPOOL 374
IDENTIFY 376
LINK 373 LOAD 374 NOTE 378 OPEN/OPENJ 375 PGRLSE 378 POINT 378 POST 373
RDJFCB 377
RESTORE 374
SNAP 376 SPIE 374
STAE 377
STAX 378
STIMER 376 STOW 375
SYNADAF 378
SYNADRLS 378
TCLEARQ 378
TGET/TPUT 378
TIME 374
TTIMER 376
under CMS 370 WAIT 373 WTO/WTOR 375
XCTL 373
XDAP 373 PUT 381 PUTX 381
READ 381 Index 573

simulated OS supervisor calls 371
WRITE 381
overhead, CP, reducing for I/O 26
overlay structures in CMS 462
overlaying
p
page
dynamic load 464
example 463
prestructured 462
contiguous storage
discontiguous storage 255
exceptions, effects of 26
frames 3
reserved 6, 28
locking 27 SPB (Set Page Boundary) card 278
table 3
zero, restrictions 6
page migration, managing 50 pageable module
identifying 522
locating 522
paging 4
by demand 4
considerations 26
parameter list
fonnats, IUCV 142 IUCV, field definitions 161
parameters, IUCV, specifying 126
password
replacing directory entry 267, 268
suppressing on command line 301 paths,IUCV 110 PAl program function key 13,252
with DIAGNOSE '58' 252
with DIAGNOSE X'58' 249, 250 with the programmable operator facility 446, 452
with VCNA 185 PA2 program function key, defining function of 246 PER command 482,484,487
summary 493
usage 481
description 496
perfonnance 24
avoiding IPL 73 CMS/DOS 413
dynamic SCP transition to or from native mode 47 for mixed mode foreground/background systems 60 fer tLYlle-shared multi-batch virtu,,} wncrJncs High Perfonnance Option 4
measurement 49
options
affinity 34
favored execution 30 locked pages 27
multiple shadow table support 35
priority 31
queue drop elimination 36
reserved page frames 28,32
shadow table bypass 35
small CP 7
virtual machine 29
virtual machine assist feature 37
virtual=real 6, 28, 32
single processor mode 47
574 VM/SP System Programmer's Guide PGMOPSW (program old PSW) 532 PGMSECT (program check interrupt work area) 534 PGRLSE macro 378
pm buffer images
examples 291
macro format 291
pmccw macro fonnat 291
pmccw macro 291 PLIST (parameter list) 315 POINT macro 378 POST macro 373 Prefix Storage Area See PSA (Prefix Storage Area)
prefixing in an AP /MP environment 209 PRESENT, logical device support facility sub function 204, 260,263 prestructured overlays 462 PREVCMND (previous command) 480, 533
PREVEXEC (previous exec procedure) 481,533
print buffers
adding new images 283
LOADBUF command 283
pm buffer images 291
pmccw macro 291
print chain image 283 UCB macro 285 UCBCCW macro 286 UCC examples 289 UCC macro 289 UCCCCW macro 289 UCS examples 284
macro. 283 1403 and 3203 281 UCSB associative field 285
examples 286
3211 281,285
3262 181 UCSCCW macro 284
printer mM3800 See 3800 printer
interruptions 314
printing, virtual 3800 spool files 298
priority 3
messages 92,95
of execution 3
perfonnance option 31
privilege classes 13
replacing directory entry 269
privileged instructions 24
problem programs, unexpected results 474
types
abnonnal termination 471
loop 471
unexpected results 471
wait 471
processor
attached
machine check 482
resources 15
timer 206 utilization 15
program
check
in checkpoint program
in dump program