SET command 498
usage 506 SET CONTROL MASK IUCV function
parameter list format 154
using 122 SET MASK . IUCV function
parameter list format 155 SET Mill command 19 SET PAGING command 52 SET SRM command 51 SET SRM MHFULL, CP command 51 SETKEY command, described 77 SETPRT, loading a virtual 3800 printer 298
setting, address stops 495 SEVER IUCV function 110 parameter list format 156
using 122
shadow table bypass 35
shared segments
described 75
discontiguous 75
protected 79
special considerations 75
unprotected 79
virtual machine operation 80 SIGNAL macro 211
signaling in an AP /MP environment 211 SIGSA VE (DMKEXT save area) 510 simulation 25
of VSE functions by CMS 386
single image console facility 200 controlling multiple virtual machines 200 using 200 single processor mode
advantages of 47
commands used with 47
performance impact of 47
purpose of 47
systems supported 47
use of the V=R machine 47
single-instruction mode 13 SIO See Start I/O (SIO) instruction SIO instruction, initiating full screen mode 251
small CP option
effect on performance 7
purpose of 7 SMSG command 198 SNA console communication services 177 177
accounting 186 CMS mode 179
command handling 184
communication interfaces 180 console mode 179
environments supported 179
establishing connections 182
full screen support mode 179 I/O processing 184, 185
NCP and PEP sharing 186
real device simulation 183
screen management 180 system structure 177
trace table entries 187 TRQBLOK 185 WEBLOK 180, 184 WEmLOK 184 VM/SP virtual console support 177
VT AM service machine 177 SNAP macro 376
spanned records, usage 381 SPB (Set Page Boundary) card 278
special diagnose for shadow table maintenance 257
Special Message Facility 198
buffer length 198
description 198
introduction 198
receiving messages 198
sending messages 198 SMSG command 198
special message flag (VMCPSMSG) 198
turning on or off 198 SPIE macro 374 SPOOL command, 3800 printer support 296
spool file
manipulation 228
recovery
spooling
after checkpoint start 12
after force start 13
after warm start 12
described 11
terminal input 12
terminal output 12
via RSCS 11 ST AE macro 377
START command, 3800 printer support 296
Start I/O (SIO) instruction
handling 25
reducing 25
STAX macro 378 STCP command 501 STIMER macro 376
stop execution ADSTOP command 489
BREAK subcommand of DEBUG command 489
stop tracing SVCTRACE command 494
TRACE command 494
storage
allocation, CMS 328
AP /MP environment 209 dump CMS 481
CP 475
dynamic paging 27
map, CMS 319
protection 5
fetch 5
storing 5
releasing 328
requirements, assembler 462-464
storage size
maximum, replacing directory entry 269
virtual machine, replacing directory entry 268 STORE command 500 summary 491
storing
data
into CAW, SET CAW subcommand of DEBUG command 492
into control registers, STORE command 492
into CSW, SET CSW subcommand of DEBUG command 492
into floating-point registers, STORE command 492
Index 577 ,I

I ',;- ·if into general registers, SET GPR subcommand of DEBUG command 492
into general registers, STORE command 492
into PSW, SET PSW subcommand of DEBUG command 492
into PSW, STORE command 492 STORE command 491 STORE subcommand of DEBUG command 491
information 495
storage protection 5 STOW macro 375
STRINIT macro 323
structure
of CMS storage 317 SUBCOM function 335
calling routines dynamically 346 SVC handling
by user 338
commands entered from terminal 339
invalid SVCs 338
linkage 335 OS and VSE SVC simulation 338
types of SVC 335
interrupt
CMS internal linkage SVC 312
other CMS SVCs 312
problem state 23
supervisor 23
support routines, CMS/DOS supported 392 SVC 202 335
extended PLIST 337
search hierarchy 339
tokenized PLIST 336 SVC 203 337 SVCOPSW (SVC old PSW) 532 SVCREGS (SVC interrupt save area) 511 SVCSECT (SVC interrupt work area) 534 SVCTRACE command 525
summary 493
usage 487
SWITCHVM macro 219
SWTHSAVE (DMKSTK save area) 510 SYNADAF macro 378
SYNADRLS macro 378 SYSJRL macro instruction 300 system
abend 477
dump spool file, reading 241
logical units 390 performance 49
for mixed mode foreground/background
systems 60 measurement 49
routine, abnormal termination of 477
symbol table, reading 242 SYSTEM command 498
system name table (DMKSNT) 73,81
System Network Architecture See SNA System/370 control registers
allocation 537
assignments 538
extended control (EC) PSW 537
information 537 I 578 VM/SP System Programmer's Guide
T
TCLEARQ macro 378
terminal interruptions, in CMS 313
TERMINATE ALL, logical device support facility
subfunction 204,261,263
TERMINATE, logical device support facility
subfunction 204,261,263
TEST COMPLETION IUCV function 111
parameter list format 157
using 121
TEST MESSAGE, IUCV function, using 121
TEXTSYM statement See programmable operator facility
TGET /TPUT macro 378
TIME macro 374
time management 3
time slice 15
time-of-day (TOD) clock 206 in attached processor environment 206 timer request queue lock 216
timers
clock comparator 206 interval timer 39,205 processor timer 206 pseudo timer 207 Time of Day (TOD) clock 206 TOD-clock accounting interface 257
tokenized PLIST, SVC 202 336
TRACCURR (current trace table entry) 508 refid=abend.save area conventions 509 TRACE
command 482,484,487,500 summary 493
usage 481
trace table
CP 22 IUCV entry formats 173 IUCV field definitions 174
trace table entries 22, 504 entries, SNA CCS entries 187
trace table recording facility 61
TRACEND (end of trace table) 508 tracing 500 &12@tr
interrupts, TRACE command 493
all user I/O operations, TRACE command 493
branches, TRACE command 493
CCWs, TRACE command 493
clear channel instruction 502 CP trace table 501 external interrupts, TRACE command 493
halt device 502 I/O 502 information 496
instructions, TRACE command 493
interrupts 501 TRACE command 493 IUCV 502 IUCV functions 117
NCPBTU 502 privileged instructions, TRACE command 493
program interrupts, TRACE command 493
queue drop 502 real machine events, MONITOR command 494
run user requests 502 scheduling 502 SIGP instruction 502