0 I Handle I/O Operations I I I I Perform Perform Perform Console Disk Unit 1/0 1/0 Record I/O I I I DMSCIT J I DMSDIO I DMSPIO II Reaa or I Start an write one or Perform print I/O operation more blocks I/O functions j l of disk data
i I I 1 DMSCWT DMSTOO, R I DMSCIO Waitfora Manipulate I Perform read console event storage I card and punch to complete management
card I/O chains I I I DMSCAT DMSBRD. DMSBWR DMSCWR Stack a line Read or write
Writea
of console one or more line to the
input for items on a
console DMSCRD disk iiie I I DMSCRD DMSPNT Read a Set the read line of
or write console pointer for a inpui: file to a given file item I DMSCWR Write a line to the console Figure 9. Details of Perform Thea 1 I I Perform Write to
Tape a Display I/O Terminal I I DMSTPD DMSSCR Load display Read a buffers to be PDS tape displayed on
a screen I I DMSTIO DMSGIO I Issue a
Read or
write a tape I display to
record
screen DIAGNOSE I DMSTMA Read an unloaded PDS from tape
and place it in aMACUB C!S systea Functions
(Part 3 of 4) 0 Handle
Interrupts I I Wait for 1/0 to Complete I DMSIOW I DMSCIT Wait for I Handle an I/O event console
to take plaoe interrupts l DMSITS Handle SVC interrupts DMSITI Handle I/O -
interrupts DMSITE Handle external
interrupts DMSITP program check
interrupts
and the Routines CftS !ethod of Operation and Progra. Organization Qj Manage CMS Storage I DMSFRE and release free
system and
user storage DMSHDS DMSSMN Set up and
Allocate and
release user storage handle user- upon request by
defined SVC OSGETMAINI interrupts
FREEMAN macros DMSHDI Set up and handle user· defined 1/0 interrupts
that
2-55

0, ___ rl..----, I Provide
Access
Method
Support I DMSSQS Support QSAM I DMSSBS BPAM 1 DMSSBD SuPPOrt BDAM
1 DMSVIB Load the CMSfVSAM shared system
for OS VSAM programs
J DMSVIP Interface With VSAM programs
to perform VSAM functions for OS VSAM programs I DMSVSR Reset fields
set during VSAM processing and
purge the CMS/ VSAM DCSS I DMSAMS Support VSAM Access Method
Services
Figure 9. I Simulate Non·CMS Operating Environments
1 I Simulate OS Functions I DMSFLD
Interpret OS JC L parameters
for use by CMS I DMSSVT, DMSSOP, DMSSCT, DMSSMN, DMSSVN, DMSSLN, Simulate OS 1 DMSSEB Perform I/O functions
for OS T DMSROS Allow CMS to ACCESS, STATE, READ' NOTE, and BACKSPAC on OS disks 1 DMSLDS List
information
about OS data sets
Simulate DOS Functions
Initialize DOS and Process DOS System Control Commands DMSSET Initialize the CMS/DOS environment DMSOPT Set compiler
options DMSASN Associate system
or programmer logical units
with physical units DMSLLU list assignments
of logical units
DMSDLB
Associate a
DTF table
filename with
a logical unit I DMSIFC Checks and passes
CPEREP operands
to EREP (IFCEREPlI 1 DMSREA Provides records to EREP from the VM/370 error
recording cylinders I Process DOS I/O Functions I DMSBOP Simulate the DOSfVS OPEN function I DMSOR 1, DMSOR 2 DMSOR3 Locate a
specified
file I DMSOPL Access a source
statement
library for a DOSIVS compiler
1 DMSCLS Simulate the DOSIVS CLOSE function I DMSBTB the CMS Batch Virtual Machine I DMSBTP Perform batch processing functions J Process DOS Execution
Related
Functions I DMSDLK Link'edit DOSIVS phases in
storage I DMSFET, DMSFCH Load a phase;
begin program
execution
Details of Perfor. Them System Functions (Part 4 of 4)
l 0.r--.......I 1 __ Perform Miscellaneous CMS Functions I DMSDBG Perform DEBUG
functions I DMSOVR Load the SVCTRACE module, DMSOVS I I I DMSGND
Generate
an auxiliary directory I DMSASD Provide an auxiliary directory 1 ....... I r 1 I Include an I I auxiliary I
f ,unc_tlons----JI I ., . , . I _ • • the FST chain
r
Provide DOS SVC Simulation
r DMSDOS Handle all CMS/DOS SVC requests I Process DOS Service
Commands I DMSSRV Copy books from
a source statement
library to an
output device 1 DMSRRV Copy modules
from a
relocatable
library to an
output device
T DMSPRV Copy procedures
from a procedure
library to an
output device I DMSDSV List the
directories
of libraries I DMSDSL Delete, compress,
list phases of
a DOSLIB library
and the Routines
2-56 System Logic and Program Determination--Volume 2 I DMSABN Handle abnormal
termination I DMSERR Generate
error
messages I Terminate
the DOS Environment I DMSBAB Pass control to
an abnormaf
termination routine via STXIT AB macro
r DMSITP Process program
interrupts
and SPI E
exits I DMSDMP Simulate $$DUMP and
S$PDUMP; issue CP DUMP DIAGNOSE that