IBM System/370 Operator's Reference Manual page 3

PREFACE
This guide :s designed as a handy, quick reference for System 370 operators of all levels and
models. It includes a problem determination chart, S/370 general information, CPU manual
procedures for Models 115 to 195, operator commands for the various operating svstems,
IPl procedures for DOSIVS and VS1 and VS2, 1/0 information (status and sense data,
restart proceduras, operating hints!' utilities information, a glossary, bibliography, and
index.
Since its purpose is to selve as a qu ick reference··a memory jogger to the operator in a
dynamic, operating situation·· its content is slanted toward translation of code (bit informa-
tion such as condition code", status and sense bytes, etc.); command and record formats;
operating procedures; and error restart procedures.
System 370 model, embrace different kinds of hardware
cOr.:PQ,1e~ts
and input/output
<Jr.its. The prob:em determination chart in the front of the guide is a generalized procedure
for isolating
t~ouble in the S/370. Once the malfunctioning unit has been isolated, flow
charts for checking out that unit
can
be found in the relevant Operating Procedures SR l.
CPU manual precedures, by model, are provided in Section 3. The procedure for loading a
secondary nucleus and the hard stop procedure are new in the guide. The rest of the proced-
u."es parallel those provided in the S/360 Operator's Reference Guide.
Depending on the oiJerating system generated, $/370 operators use a variety of commands.
OSIVS operators use VS1 and VS2 commands; DOSIVS operators use DOSNS and POWER
commands: VM;'370 operators, CP and CMS cOIT\rnacds; remote workstation operators, RES
commands; and so on. In other words, each operator uses the commands suitable to his
computer, operating system, and operator assignment. Section 4 contains the command
formats fer the various operating systems and operator consoles, and for remote as well as
central CPU operators.
1/0 status and sense byte information is summarized in Section 5. For the most part, only
the first six bytes are show~, since these are ali that concern the operator; the remaining
bytes are of interest to the field engineer. Complete status and sense byte information usual-
ly appears in t~e Component Description SR L. For some of the smaller systems, however,
status and se"se information on
1/0
devices is presented in the Functional Characteristics
SRL.
Of necessity, the information in this guide is highly condensed. Complete information is
provided in theSRls. To save the operator time we have noted the source of all information
in this guide in order to steer him directly to the proper SRl. If the source appears just
:Jnce, as at the beginning of Section 2, tris means that all the information in that section
comes from that single source. The titles of the source publications can be found in Biblio-
graphy 1, a numerically ordered list of all publications cited in this guide. Bibliography 2
lists publications not quoted frem directly, is more comprehensive, and is arranged by sub-
ject matter.
Since this is an operator's guide, we have included only information which concerns the
uperator. For programming and field engineering information, consult the OS/VS Program·
mer's Reference Digest, the DOSIVS Handbook, and the FE Handbook.
Finally, a word of caution. For release-dependent information, check the appropriate SRl
to determine whether the information contained in this guide has changed as a result of the
r·ow release. As of the date of publication, operator commands are current for OSNSl
Release 3, OSIVS2 Release 2, VM/370 Release 2, and DOSIVS Releese 29.