Hardware Devices Supported CMS/DOS routines can read real DOS disks containing VSE data files and VSE private and system libraries. This read support is limited to the following disks
supported by VSE: IBM 2314 Direct Access Storage Facility
IBM 2319 Disk Storage IBM 3310 Direct Access Storage IBM 3330 Disk Storage, Models 1 and 2
IBM 3330 Disk Storage, Model 11
IBM 3340 Direct Access Storage Facility
IBM 3344 Direct Access Storage IBM 3350 Direct Access Storage IBM 3370 Direct Access Storage IBM 3375 Direct Access Storage The following devices, which are supported by VSE, are not supported by CMS/DOS: Card Readers: 1442, 2560P, 2560S, 2596, 3504, 5425P, and 5425S Printers: 2560P, 2560S, 3203 Models 1 and 2, 3525,5203, 5425P, and 5425S Disks: 2311
Also, CMS uses the CP spooling facilities and does not support dedicated unit
record devices. Each CMS virtual machine supports only one virtual console, one
reader, one punch, one printer, four tapes, and 26 disks. Programs that are exe­
cuted in CMS/DOS are limited to the number of devices supported by CMS. eMS Support of VSE Functions
In addition to the CMS SET command used to invoke the CMS/DOS environment,
there are a number of CMS/DOS commands and CMS commands with special CMS/DOS operands that provide CMS support of the following VSE functions:
Assignment of logical units to particular physical devices.
Associating VSE files with particular logical units. VSE librarian services.
Compilation and testing of DOS/VS COBOL, DOS PL/I and RPGII
programs.
Execution of DOS/VS COBOL, DOS PL/I, and RPGII programs.
Figure 43 on page 388 summarizes these commands and operands. A detailed
description and command format can be found in the VM / SP CMS Command and
Macro Reference.
VSE Support Under eMS 387

Command Operand Comments ASSGN Executable only in the en\! ; ,·-onment. Assigns Ct'1S/DOS system or programmer logi-
cal units to a virtual device.
DlBl D8fines a VSE or ddname and relates
the ddname to a disk file. DOSlIB Deletes, compacts, or lists information
about the phases in a Ci1S/DOS phase
library. DOSlKED Executable only in the Cf'1S/DOS environmE:!nt. link-edits Cr'1S text file, or object modules
from a VSE relocatuble library, and places them in executable forms in a Cr"S/DOS phase library. DOSPlI Executable only in the:! environment.
Compiles DOS PL/I source programs.
DSERV Executable only in the CNS/DOS Displays information about VSE core
image, relocatable, source statement, and
procedure and/or transient directories. ESERV Executable only in the Ci·1S/DOS environment.
Displays, updates, puncnC!s, or prints edited (E sublibrary) VSE source statement
books. FCOBOL Executable only in th8 CMS/DOS environment. Compiles DOS/VS COnOl source programs. FETCH Ex(!cutable only in the DO S environment. Fetches a CnS/DOS executable phase. GENMOD OS Specifies the type of macro needed DOS to execute a module. The All operand is
All intended for cns internal use. GLOBAL DOSlIB The GLOBAL command can nOL.J specify CNS/DOS phase libraries, as well as text and macro
libraries. lISTIO Executable only in the environment. Display information about Ci'iS/DOS system and programmer logical units. lOADMOD Checks that a module gC!nerated to
execute in a specific macro simulation
environment ( Ci'lS/DOS or cr'jS) is in the
correct env i ronr,1ent.
Figure 43 (Part 1 of 2). Summary of Changes to CMS Commands to Support CMS/DOS 388 VM/SP System Programmer's Guide