formats 159
functions See IUCV functions
introduction 110
invoking 126
macro instruction 126
format 128
messages 1I 0, 111
data transfer 1I2
identification 113
one-way 120 priority 120 queues 111 MSGBLOK, definition 111
one-way messages 120 parameter list
field definitions 161
formats 142
parameters, specifying 126
paths 110 priority messages 120 queues, interrogating 115
restrictions 118
return codes and completion codes 171
security considerations 118
support, CMS 355
trace table entries 117
field definitions 174
formats 173
suppressing 117
using 119 VM/SP use in SNA environment 180 IUCV functions ACCEPT 110 parameter list format 142
using 120 CONNECT 110
parameter list format 143
using 120 DECLARE BUFFER, using 119
parameter list format 144 DESCRIBE 111
parameter list format 145
using 120 iucvftc.TEST COMPLETION 111 PURGE parameter list format 146
using 122
QUERY, using 119 QUIESCE 1I0 parameter list format 148
using 122
RECEIVE 111
parameter list format 149
using 120 REJECT 111
parameter list format 150 using 121 REPLY 1I1
parameter list format 151
using 121 RESUME 110 parameter list format 152
using 122
RETRIEVE BUFFER, using 123 SEND 111
parameter list format 153
using 120 SET CONTROL MASK parameter list format 154
using 122 SET MASK parameter list format 155
using 122 SEVER 110 parameter list fonnat 156
using 122 TEST COMPLETION 121
parameter list format 157
using 121 TEST MESSAGE, using 121
IXBLOK, for IUCV communication with CP system
services 141
J
journaling
accounting records 70 LOGON, AUTOLOG, LINK commands 300 L LASTCMND (last command) 480, 533 LASTEXEC (last exec procedure) 481,533 LASTLMOD (last module loaded) 480, 533 LASTTMOD (last transient loaded) 480 LGLOPR statement See programmable operator facility
library volumes, CMS/DOS, directory entries 412
LINK command
journaling 300 password suppression 301 LINK macro 373 LIOCS routines supported by CMS/DOS 409 load 49
environments of VM/SP 59
indicators 49 LOAD macro 374
load map 529 CMS 529
how to get a load map 529
loader tables, CMS 318
loading 77
and saving discontiguous saved segments 77
discontiguous saved segments 78, 254
loadlist
requirements CP 278 SPB card 278 LOCATE command 500 LOCK macro 217
locked pages option 27
locks
dispatcher stack 216
free storage 216
I/O 216
RDEVBLOK 216
real storage management (RM Lock) 216
run list 216
timer request queue 216
user-defined 217 VMBLOK 216 LOCKSA VE (LOCK macro save area) 510 log file See programmable operator facility
LOGGING statement See programmable operator facility
Index 571

I logicnl device support facility
description 203 implementing via DIAGNOSE 260 logical editing symbols, replacing directory entry 269
logical operator See programmable operator facility
logical ,units aSsignment of 389
defined 389
programmer assigned 390 system assigned 390 LOGON command
journaling 300 password suppression 301 LOGREC area
getting starting address 240 reading 241 LOKSA VE (DMKLOK save area) 510 loop 483 See also problem, types
disabled
CP 483
virtual machine 484
enabled, virtual machine 484
low address protection 46 LOWSA VE (debug save area) 532
LUB (Logical Unit Block) 390 M
machine check
CP 481
during start-up 22
interrupt 22
in CMS 314
not diagnosed 481
on attached processor 482
unrecoverable 481
macro instruction
IUCV 126
format 128
macro library CMS 558
macros CMS 318
CP DISPW 350 DMSEXS 334 DMSFREE 324 DMSFRES 330 DMSFRET 328 DMSFST 458 DMSKEY 333
GETMAIN 318
FCB 292 FOB 288 FOBCCW 288
IUCV 128
LOCK 217
pm 291
pmccw 291 SIGNAL 211
SWITCHVM 219 UCB 285 UCBCCW 286 UCC 289 UCCCCW 289 UCS 283 UCSCCW 284
572 VM/SP System Programmer's Guide
declarative 400 imperative 409 OS See OS (Operating System), macros
supervisor 391 VSAM, supported under CMS 416 VSE macros supported by CMS/DOS 391
Mass Storage System See MSS (Mass Storage System) MCKOPSW (CMS machine check old PSW) 532
Message System Service 192
establishing communications 192
messages
controlling 498
data transfer, IUCV 112
identification, IUCV 113
IUCV 110, 111
one-way 120 priority 120 queues, lUCY 111 MFASAVE (DMKMCT save area) 510 MIGRATE command 51
migration
from 800-byte to VM/SP 304 page, managing 50 minidisk link mode, replacing directory entry 271
minidisk multiple password, replacing directory entry 271
minidisk read password, replacing directory entry 271
minidisk write password, replacing directory entry 271
minidisks 10 missing interrupt handler 18
description 18
devices monitored 19
diagnostic aids 21
error recording area 22
messages 21
use of 18
model, device 520 modifying modules 501 MODMAP command 529 MONITOR CALL instruction 52
MONITOR command 52
format 53
implemented classes 54
monitoring, recommendations 59
moveable head preferred paging area, managing
migration 51
MOVEFILE command, usage 506 MSGBLOK, lUCY, definition 111 MSS (Mass Storage System) communication 259
cylinder faults, VM/SP processing 202 mount and demount processing 201,259 mount processing, asynchronous 201 VM/SP access 201 volumes 10, 24
backup copies 202 I/O management 10 MSSF SCPINFO command 265 MSSFCALL 265 SCPINFO command 265
multiple channel errors 469
multiple copy printing, 3800 printer 295
multiple shadow table support 35
multiprocessing systems, improving performance of 47
multiprocessor
examine real storage 225
virtual machine I/O management 9
multiprocessor mode (MP)