Document Details
VM370 Rel 6 Data Areas and Control Block Logic (Mar79)
Page
6
(
6
of
342
)
GO
UMACELOK:
user
Machine
Block.
.111
VIRTUAL
I/O
CONTROL
BLOCKS.
•
.113
Virtual
Channel
Blocks.
•
•
.113
Virtual
Control
Unit
Blocks
••••••
113
Virtual
Device
Blocks.
•
••••
113
VCHBLOK:
Virtual
Channel
Block.114
VCONCTL:
Virtual
Console
Control
Block
.115
VCUBLOK:
virtual
Control
unit
Block
•••
116
VDEVBLOK:
Virtual
Device
Block
•.••••
117
VFCBELOK:
virtual
Forms
Control
Buffer
Elock
•••••••••••••••••
120
VMABLOK:
Shared
Systems
Control
Addition
to
VMBLOK
••••
'
•••••••
120
VMBLOK:
Virtual
Machine
Control
Block
••
121
VMCBLOK:
Virtual
Machine
Communication
Block.
_
•
•
•
•
•
•
•
•
•
•
•
.128
VMCMHDR:
VMCF
Message
Header
•••
_
••
129
VMCPARM:
VMCF
Parameter
List
•••
_
••
130
VRRBLOK:
Virtual
ReservejRelease
Block
.131
VSPLCTL:
Virtual
Spooling
Control
Block.132
VSPXELOK:
virtual
Spool
Extension
Block.133
IINTELOK:
External
Interrupt
Block
•••
134
IOBR3211:
Extended
Outboard
Recording
Block.
•
•
••••••••••••
135
SECTION
2.
CMS
DATA
AREAS
AND
CONTROL
BLOCKS.
.•
•
•••••••••
,
•••
137
AETAB:
Abend
Termination
option
Table
••
138
AEWSECT:
Abend
Recovery
Workspace.
..139
AtTSECT:
Active
Disk
Table
_
••••••
140
AFTSECT:
Active
File
Table
•
••••.•
143
ANCHSECT:
Anchor
Table
••••••
_
••
145
EATLSECT:
CMS
Batch
USEr
Job
L
i-a
its
....
,,146
EEOI:
Boundary
Box
•••••••••••
146
EGCOM:
DOS/VS
Partition
Communication
Region
•••••••••••••••••
147
CMSTAXE:
Terminal
Attention
Exit
Element
••••••••
_
•••••••
149
CVTSECT:
Communication
Vector
Table
as
supported
by
CMS
••••••••••••
150
DEGSECT:
Debug
Work
Area.
'
•••••••
152
DEVSECT:
Device
Table
DSECT
••••••.•
156
DFVTAE:
Device
Table
••••••••••
157
DIOSECT:
Disk
I/O
Work
Area
•••••••
160
DMSCCB:
Command
Control
Block.
.162
tOSSECT:
DOS
Simulation
Control
Block
••
164
EDCB:
Edit
Control
Block
••••••••
166
ERDSECT:
Error
Handling
Routine
DSECT
•.•
174
EXTSECT:
External
Interrupt
Work
Area
••
177
EXTUAREA:
External
User
Area
••••••
179
FCBSECT:
Simulated
OS
Control
Blocks
••
180
FCBTAB:
Fetch
Table.
•
•
•
•
•
•
•
.184
FICL:
First
In
Class
Block
•••••••
185
FRDSECT:
Free
Chain
Element
Header
Elocks.
•
•
•
•
•
•
•
•
•
•
•
•
•
FSCBD:
File
System
Control
Block
•
FSTD:
File
Status
Table
Entry
DSECT
••
FSTSECT:
File
Status
Table
••••••
FVSECT:
Fixed
Variable
Storage
Work
.•
186
.188
.189
•
190
Area
for
CMS
File
System
••••••••
191
IHADECB:
Data
Event
Control
Block
••••
195
IOSECT:
I/O
Interrupt
Save
Area
•••••
196
KEYSECT:
Disk
Key
Table
DSECT
for
BDAM
Simulation
•••••••••••••••
197
LtRST:
Loader
Storage
Area
•••••••
198
LUETAB
and
LUEPR:
Logical
Unit
Block
Table
•
•
•
•
•
•
•
•
•
•
••••
202
NICL:
Number
in
Class.
•
•
•
•
•
•
.204
NUCON:
Nucleus
Constant
Area
•
•
•
.205
OFSECT:
Major
CSECT
for
all
I/O
Operation
Lists
••••••••••••
219
OSFST:
OS
File
Sta
tus
Tatle.
•
•
•
.222
OVSECT:
Describes
the
First
Few
Lccations
of
DMSOVS
••••••••••
224
PCTAB:
Progra
II
Check
Option
Tabl
e.
.224
PDSSECT:
Directory
Table
for
EPAM
Simulation.
•
•
•
•
•
•
•
•
•
•
•
.225
FGMSECT:
Program
Interrupt
Work
Area
••
226
PIBADR:
Program
Information
Block
••••
227
PIB2TAB:
Program
Information
Block
Extension
•••••••••••••••
228
PUBADR:
Physical
Unit
Block
Table
••••
229
PUBOWNER:
Physical
Unit
Elock
Ownership
Table.
•
••
•
•
•
•
•
•
•
•
••
230
SSAVE:
System
Save
Area.
•
•
•
•
•
.231
SUBSECT:
Subset
Work
Are
a.
•
•
•
•
•
•
.233
SVCSECT:
SVC
Interrupt
Storage
.•••••
234
SVEARA:
LTA
and
PP
Save
Area
DSECT
•••
238
SYSC08:
System
Communication
Region
•••
239
SYSNA8ES:
Saved
Systems
Names.
.242
TSCBLKS:
TSO
Control
Blocks.
.243
USAVE:
User
Save
Area.
•
•
•
•
•••
245
USERSECT:
User
Work
Area
•
•
•
.245
SECTION
3.
RSCS
DATA
AREAS
AND
CONTROL
BLOCKS.
•
••
•
•
•
•
••
•
••••
247
ASINE:
Asynchronous
Exit
Element
••••
248
BUFDSECT:
SML
Telecommunications
Buffer.249
COMDSECT:
Address
Constants
as
Pointers.250
DEVTABLE:
NPT
Device
Table
•••••••
251
FR-EE-E·:-·A
Free·Blelle-at
on
the
Supervisor-
Element
Cueue
•
•
•
•
•
•
•
•
.252
GIVE
Request
Table
•
•
•
•
•
•
•
.253
GIVEE:
A
GIVE
Element.
•
.253
IOE:
An
I/O
Element.
•
•
.254
IOTABLE:
An
I/O
Table.
•
.255
LINKTABL:
Link
Table
•
•
•
•
•
•
•
.256
RE
CBLOCK:
NPT
Request
Block.
.258
ROUTE:
Routing
Table
Entry.
.259
SVECTORS:
Low
Storage
Definitions.
.260
TAG:
RSCS
File
Descriptor.
•
•
•
•
.263
TAGAREA.
•
••
•
•
•
•
•
•
•
•
.265
TAKE
Request
Table
•
•
•
•
•
•
•
.265
TANKDSEC:
S8L
Unit
Record
Tank
.266
TAEEA:
A
Task
Save
Area.
•
•
.267
TASKE:
A
Task
Element.
.269
TCTDSECT:
Task
Control
Tatle
.270
AFPENDIXES
•••••••••••••••
273
AFFENDIX
A.
CP
and
RSCS
EQUATE
SY8BOLS
.275
VM/370
Device
Classes,
Types,
8odels,
and
Featurese
e
e
•••••••••••
276
VM/370
EQUATE
SYMBOLS
--
Machine
Usage
.278
VM/370
EQUATE
SYMBOLS
--
Extended
Centrel
Registers
•••••••••••
279
VM/370
EQUATE
SYMBOLS
--
CP
usage
••••
280
VM/370
Registers
•
•
•
•
.283
AFPENDIX
E.
RSCS
CONTROL
AREAS
AIS
Moniter
Control
Area
•
REX
Monitor
Control
Area
••
SML
Moniter
Centrol
Area
•
.285
•
•••
286
•••
287
•
.288
vi
IBM
VM/370
Data
Areas
and
Control
Block
Logic
AFPENtIX
C.
RSCS
REQUEST
ELEMENTS.
Command
ALERT
Element
Format
A1.
Cper
ational
Notes.
•
•
•
•
Command
ALERT
Element
Format
A2
••
Operational
Notes
•••••
Command
ALERT
Element
Format
LO
••
Operational
Notes
•••••
Command
ALERT
Element
Format
L1
••
Operational
Notes
•••••
Command
ALERT
Element
Format
L2.
Operational
Notes
•••••
Command
ALERT
Element
Format
L3
(also
Message
Alert
Element).
Operational
Notes
•••
Command
Request
Element.
•
291
•
292
.292
•
293
•
293
.294
.294
.296
.296
.297
.297
.298
.298
e
e
299
.299
Operational
Notes
••
File
Request
Element
•
Operational
Notes
••
Line
Alert
Element
•
•
Operational
Notes
••
•
••••
300
.300
•
••••
302
•
••••
302
MeEsage
Bequest
Element
•
CFeratienal
Notes
••••••••
Pert
Table
•
•
•
•
•
•
•
•
•
•
•
•
CFeraticnal
Notes
•••
Terminate
Request
Element
•
CFeratienal
Notes.
•
.303
•
••
303
•
••
304
•
••
304
.305
•
.305
APFENDIX
D.
CMS
EQUATE
SYMEOLS
•••••
307
CMS
Usage
Equates.
•
•
•
•
•
.308
CMS
Register
Equates.
•
••••••
309
AFFENDIX
E.
DATA
AREAS
AND
CONTROL
BLeCK
REFERENCES.
•
•
•
•
•
•
.311
Cf
Control
Bleck
References.
.312
CMS
Contrel
Elock
References
••
321
RSCS
Control
Elock
References.
•
••
326
Contents
vii
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