Tbis publication provides the IBM system
bardware and software support personnel
with the infor.ation needed to analyzeproblems that may occur on the IBM Virtual Machine Facility/370 (VM/370). Tbis .anual comprises three volumes: "Volume 1. VM/370 Control Program (CP)," "Volume 2. Conversational Monitor System (CMS)," and "Volume 3. Remote Spooling Communications Subsystem (RSCS)" contain
tbe logic description for each of the
components. Each of thesevolumes is
divided intofour sections: Introduction, Method of Operation, Directory, and
Diagnostic Aids.
TheMethod of operation and prograM organization sections contain the functions
and relationsbips of the program routines
inVM/370. They indicate the program operation and organization in a general way to serve as a guide in understanding VM/370. They are not meant to be a
detailed analysis ofVM/370 programming and
cannot be used as such.
The directories contain descriptions of
all theassemble modules in CP, CMS, and RSCS@ They also contain extensive
cross-references betweenmodules and labels
within aVM/370 component.
The diagnostic aids sections contain
additional information useful fordetermining tbe cause of a problem. Appendix A, located in Volume 1,
contains a description ofV!j370 Extended
Control-programSupport (ECPS). Appendix B, also located in Volume 1,
describesVM/370 support for the IBM 3850 Mass Storage System (MSS). • Isolate the component of V8/370 in which
theproblem occurred. • Use the list of restrictions in !!L170 A§§§Ag§§ to be certain that the
operation thatwas being performed vas
valid.
Preface• Use the directories and use the VM/31Q And Contr.Ql
help you to isolate the problem.• Use the method of operation and program
organization sections, if necessary, to
understand the operation tbat was being
performed.TERMINOLOGY The following terms in tbis publication
refer to the indicated support devices:• "2305" refers to IB! 2305 Fixed Head Storage, Models 1 and 2. • "270x" refers to IB! 2701, 2702, and 2703 Transmission Control Units or the
Integrated Communications Adapter(ICA) on the System/370 Bodel 135. • "3330" refers to tbe IB! 3330 Disk Storage, Models 1, 2, or 11; the IEM 3333 Disk Storage and Control, Models 1
or 11; and tbe3350 Direct Access Storage operating in 3330/3333 Model 1
or3330/3333 !odel 11 compatibility
mode.• • • • • • "3340" refers to tbe IBM 3340 Disk Storage, Models A2, B1, and B2, and the
3344 Direct AccessStorage Model B2. "3350" refers to the IBM 3350 Direct
AccessStorage !!odels 12 and B2 in
native mode."3704", "3705", or "3701" refers to IBM Communica tions 3704 and 3705 Controllers.
Theterm "3705" refers to the 3705 I and
the3705 II unless otberwise noted.
"2741" refers to theIBM 2741 and the
3767, unless otherwise specified."3270" refers to a series of display
devices,namely the IBM 3275, 3276,
3277, 3278 DisplayStations. 1 specific
device type is used cnly when a
distinction is required between device
types.
Information aboutdisplay terminal usage
also applies to theIBM 3036, 3138, 3148,
and 3158 Display Consoles when used in
displaymode
6 unless otherwise noted. Preface iii
bardware and software support personnel
with the infor.ation needed to analyze
tbe logic description for each of the
components. Each of these
divided into
Diagnostic Aids.
The
and relationsbips of the program routines
in
detailed analysis of
cannot be used as such.
The directories contain descriptions of
all the
cross-references between
within a
The diagnostic aids sections contain
additional information useful for
contains a description of
Control-program
describes
the
operation that
valid.
Preface
help you to isolate the problem.
organization sections, if necessary, to
understand the operation tbat was being
performed.
refer to the indicated support devices:
Integrated Communications Adapter
or 11; and tbe
or
mode.
3344 Direct Access
Access
native mode.
The
the
"2741" refers to the
3767, unless otherwise specified.
devices,
3277, 3278 Display
device type is used cnly when a
distinction is required between device
types.
Information about
also applies to the
and 3158 Display Consoles when used in
display
6
