CD ,..--------, Process
Commands
that Manipulate the File System Process Ann Execute CMS Files Initialize the CMS Virtual Machine
Environment
Perform Miscellaneous CMS Functions
Manage
the CMS File System Simulate Non-CMS Operating
Environments Handle I/O Operations
Interruptions
Manage CMS Storage Figure 8. An Overview of the Functional Areas of C!S 2-52 IBft VK/370 System Logic and Program Determination--Voluae 2

CD I Initialize the Process CMS Virtual and
Machine Execute
Environment CMS Files I I I I I I Maintain an
Process Load and Process
Perform Interactive and Execute Execute MODULE Library
Console
EXEC Files TEXT Files Files
Support
Environment Functions I I 1 I I DMSINI DMSINT DMSEXC DMSLOA DMSMOD I DMSLBM I Read the CMS Interpret Load a disk Process the
Generate I Generate and I LOAD and
nucleus CO.mmands version of
a MODULE update MACLIB
entered at the EXEC iNCLUDE file files the console processor commands 1 1 I J DMSINS DMSINA DMSEXT DMSLDR DMSMOD DMSLBT Initialize Begin execution Load a
Generate
storage constants Handle Perform
and update
and virtual disks synonyms and EXEC of programs MODULE a TXTLIB
for a virtual abbreviations processing in storage file library machine I I DMSINT I DMSSCN DMSLSB Handle first I Process a
Process
commands command line loader entered at and create
options
the consoie
L a PL!ST I I DMSSET DMSCPF DMSLlO I
Set virtual Pass a Create a I machine command load map
environment iine to CP and perform I options for execution loader I/O I I DMSQRY DMSITS DMSMDP
Query the Process
Type a load virtual machine command
environment functions
map at a
option settings via SVC caiis console I DMSGLB
Define libraries to be searched
during execution
and assembly i
DMSLGT
Create a chain
of TXTUB blocks for use
during execution; release the chain I DMSLIB Search TXT U B libraries for
undefined symbols; close TXTLIB libraries Figure 9. Details of C!! S Systell Functions and. the Routines that Perforll Theil (Part 1 of 4) CftS !ethod of Operation and Progra. Organization 2-53