UDEVBLCK UDEVBLOK supplies the information about the virtual machine's virtual devices# the
operational parameters for its use# such as DASI access passwords# read/write link mode# spool device# T-disk space versus dedicated device space# as well as other Farameters.
Hexadecimal
o
8 10 18 20 28
Displacement
------------ 0 2
4
8
9
A
E
C
D
D
E 10 E 10 12 UDEVADD U* 1 I U*2 UDEVRELN Field
Name UDEVADD DS UDEVDISP DS UDEVDASD DS UDEVSTAT DS ] it.§ UDEVDED EQU UDEVTDSK EQU UDEVLONG EQU "TI lO'lJT 1l'T'I11 • .£,I,I.\.,IJ. RQU UDEVSPOO EQU UDEV3158 EQU UDEVVRR EQU UDEVMODE DS ]!1.§ UDEVLR EQU UDEVLW EQU UDEVLM EQU UDEVR EQU UDEVRR EQU UDEVW EQU UDEVWR EQU UDEVM EQU UDEVMR EQU UDEVMW EQU UDEVTYPC DS UDEVTYPE IS UDEVFTR IS UDEVMDL DS ORG UDEVCLAS DS UDEVLINK DS UDEVLKID DS UDEVNCYL DS UDEVRELN DS UDEVVSER DS , UDEVDISP unEVDAS!) U*3 I U*4 U*5 I U*6 I UDEVNCYL UDEVVSER UDEVPASR UDEVPASi UDEVPASM Field Descriptien, Contents# Meaning 1H Virtual device address
1H Displacement of the next block
1F DASI address of the next block 1X U*1 Device status information
in UDEVSTAT --X'80'---- Device to be dedicated te this user X'40' T-disk to be allocated X'20' Device block is full length (6 doublewords) X'10' Device is te be linked (at legon) X'08' Device is a spool device X'04' Device is a 3158 console X'02' Virtual reserve/release requested 1X U*2 Access mode information
in UDEVMODE --X'80'--- Read links allowed X'40' Write links allcwed X'20' Multiple write links allowed 00 Device to be in R link mode for owner 04 Device to be in RR link mode for owner 08 Device to be in W link mode for owner
12 Device to be in liR link mode for owner
16 Device to be in M link mode for owner 20 Device to be in MR link mode for owner
24 Device to be in MW link mode for owner
1C U*3 Virtual device class
1C U*4 Virtual device type
1C U*5 Device feature codes
1C U*6 Device model number UDEVMDL User device block (short)
1C Speel device output class
1H User link tc disk
1D User link tc userid
1H Virtual DASD size
1H Virtual DASt cylinder relocation
6C Volume identification number Section 1. CP Lata Areas and Centrel Elocks 109

UDIRBLOK Hexadecilllal Field
tisplacelllent Nallle ------------
18 UDEVPASR 20 UDEVPASW 28 UDEVPASM UDEVSIZE DS
DS
DS EQU 1D
1D
1D
Field Descriptien, Contents, Meaning Passwerd for read access
Password for write access Passwerd for multiple access (*-UDEVBLOK)/8 UDEVELOK size in (X'06') contains data describing the user's ce.mand privilege classes, special virtual
machine options, terminal line edit values, and ether values.
r,---------------------------------------------------------,
o 1//UDIRRSV1///1 UDIRDISP 1 UDIRDAsr 1 1---------------------------------------------------1
8 1 UDIRUSER 1 1 I 10 1 UDIRPASS I Hexadecillal Field
I:isplacement Name
------------ 0 UDtRR-SV1 2 UDIRDISP 4 UDIRDASD 8 UDIRUSER 10 UDIRPASS UDIRSIZE DS
DS DS DS DS EQU lH 1H
1F
1D
1D
Field Description, Centents, Meaning Reserved for IBM use
DisFlacement of the user's UMACELOK DASI: address of the user's UMACELOK Userid User Fassword (*-UDIRBLOK)/8 UDIRELOK size in doutlewords (X'03') 110 IBM VM/370 Data Areas and Centrol Block Legic