Page of GC20-1807-7 As April 1, 1981 by TNL GN25-0829 problem state 87 supecvisoc state interrupts, RSCS 339 SVC 202· 257-258
search hierarchy 259 SVC 203 257-258 SVC 76, issuing from a second level virtual
machine 197 SVCOPSW (SVC old PSi) 69 SVCREGS (SVC interrupt save area) 50 SVCSECT (SVC interrupt work area) 72 SVCTRACE command 64.2-66
summary 35-36
usage 29-30 SWTHSA VE (DHKSTK save area) 50 SYNADAF macro 277 SYNADRLS macro 277 SYSJRL macro instruction 229
system
abend 20 dump spool file, reading 196-197
logical units 288-288.1
performance
for mixed mode foreground/back grou nd
systems 126 . measurement 103 routine, abnormal termination of 20 symbol table, reading 197 SYSTEM command 39
system name table (DMKSNT) 132-142 System/370 T
control registers
allocation 345
assignments 346-347
extended control (EC) PSi 348
informa tion 345
tape label processing in CMS/DOS 309 tape label processing in CKS/DOS (5748-XE1) 309 TCLEARQ macro 277
terminal interruptions, in eKS 238 macros 277
TIME, macro 275
time manaqeme nt 76
time slice 84-85
t ime-of-day (TOD) clock 176
in attached processor environment 176
timers
clock comparator 177
interval timer 101,175-176 processor ti.er 176
pseudo timer 177
Time of Day (TOD) clock 176 TOO-clock accou nting inter face (5748- X EI) 204-204.1 TRACCURR (current trace table entry) 47-48
TRACE
command 40-41 summary 35-36
usage 23,24-25,26-27,29-30
TRACEND (end of trace table) 47-48
tracing qU- q 1
all user I/O operations, TRACE command
35-36
branches
TRACE command 35-36 CCis, TRACE command 35-36
clear channel instruction 44
CP trace table 44
external interrupts, TRACE command
35-36
information 37
instructions
TRACE comm an d 35-36
interrupts 44
TRACE command 35-36 I/O 44
interrupts, TRACE command 35-36
NCP BTU 44
privileged instructions, TRACE command
35-36
program interrupts, TRACE command 35-36
queue drop 44
real machine events, MONITOR comma nd 35-36
run user requests 44
scheduling 44
storage management 44 SVC interrupts SVCTRAC E command 35-36
TRACE command 35-36
user operations, TRACE command 35-36 TRACSTRT (start of trace table) 47-48
transient area 263
transient area (CMS) 242
transient routines supported by CMS/DOS 304- 305 TTIMER macro
type (device) U 276 60-62 UCS (Universal Character Set) adding buffer images 217-218 supplied images 216-217 UNAUTHORIZE, VKCF subfunction 154
unexpected results 6 also problem types)
reason for 24-25
unit record, devices, sharing Universal Character Set (see Universal Character Set unproductive processing time
user directory
reading 197
updating 197 80-82 UCS) UCS) 6
user doubleword, VMCF function 164-167
user options, replacing directory entry 206-210 user-controlled device interrupts 238 USER SECT (User A rea) 241
Index 381
Page of GC20-1807-7 As Updated Apr ill, 1981 by TNL GN25-0829 V V=R machine, used with single processor
mode (5748-XEj) 102.2-102.3 VCHBLOK 53-54 VCHADD (virtual channel address) 53-54 VCHSTAT 53-54 VCHTYPE (type) 53-54 VCUBLOK 53-54 VCUADD (virtual control unit address)
53-54 VCOSTAT (status) 53-54 VCUTYPE (type) 53-54 VDEVBLOK 54-56 VDEVADD (virtual device address) 54-56 VDEVCFLG (virtual console flags) 54-56 VDEVCSW (virtual CSW) 54-56 VDEVEXTN (virtual spool extension)
54-56 VDEVFLAG (device dependent 54- 56 VDEVFLG2 (Reserve/Release fl ags) 54-56 VDEVIOB (active IOBLOK pointer) 54-56 VDEVREAL (real device block address)
54-56 VDEVRRB (address of VRRBLOK) 54-56 VDEVSFLG (virtual spooling flags) 54-56 VDEVSTA T (sta tus) 54-56
verifying existence of saved systems 202 virtual
block multiplexer channel option 102 console functions, DIAGNOSE instruction
184.1
operator's console 76
processor 76
virtual=real option 77-78,92-93,95-97
virtual console, operator 76
virtual devices, I/O 76
virtual interval timer assist 101,175-176 virtual machine assist feature
described 98-99
described (5748-XE1) 98.2
restrictions for use of 98-99
usage 98-99
used to reduce real supervisor state
time 98-99
used to reduce real time 98.2 Virtual Machine Communication Facility (VMCF) VMCF) introduction to 143 Virtual Machine Facility/370 (VM/370) CMS 231-233
control program 73-230 device types in 192-194 DIAGNOSE instruction in 182
directory 76
load environment 124-125
program states 83
R SCS 327- 342
virtual machine storage size
maximum, replacing directory entry 206- 210 replacing directory entry 206-210 v irt ual machines
abend du mp 23
abnormal termination 8-13,15-17,23
creation 76
382 IBM VM/370 System Programmer's Guide
described 76 DIAGNO SE instruction usage 182
directory 76
disabled loop 8-13,15-17
procedure 26-27
disabled wait 8-13
procedure 15-17,29-30 dispatching scheme 84-85
en abled loop 8-13,15-17
procedure 26-27
enabled wait 8-13
procedure 15-17,30 with real timer option 30 without real timer option 30 in terrupt, handled by C P 76 I/O management
dedicated devices 79-80 directory 79-80 mass storage volumes 79-80 shared devices 79-80 spooled devices 79-80 I/O operation 89-90 operating system 76
pe rformance
for time-shared multi-batch machines
126
options 93 PSW 83
shared segment operation 142
storage management
directory 76-77
virtual storage 76-77
time management
conversational user 76
nonconversational user 76
priority of execution 76
timers 175-176
unexpected results 8-13,15-17
procedure 24-25 Virtual Reserve/Release support, virtual
machine I/O management 79-80 virtual storage 76
management
CP 76-77 RSCS 335
virtual storage preservation
purpose of (5748-XE1) 78..1 SAVESEQ priority value 78.2 SAVESEQ priority value (5748-XE1) 78.2 V"SAVE option (5748-IX8) 7B.1 VMSAVE option (574B-XE1) 78.1
virtual storage preservation 78.1 VM "onitor 110-125 collection mechanism 110-125 collection mechanism 110.1 collection mechanism (574B-XE1) 110.1 considerations 122-123
data records 357-365
data volume and overhead 123
header record 357-365
monitor classes 110-125 monitor classes (5748- XXB) 110.1 monitor classes (574B-XE1) 110.1 responses to unusual tape conditions
121-122
tape format and content 357-365
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