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1.0.0 Introduction
1.1.0 DESCRIPTION
This system is a desk-size business system with
the following features:
•
Programs are written in system instructions
and converted to machine language by a
microprogram.
•
Large storage capacity is provided by an
integrated disk storage faci I ity.
• Operating instructions and prompting
messages are displayed on a display screen.
•
Input/output and processing unit errors are
recorded and can be retrieved.
•
Diagnostic programs are automatically run
after the initial microprogram load.
• Whenever possible, instructions are automat-
ically retried after an error.
The disk drive provides 3.2, 5.0,9.1, or 13.7
million bytes of accessible storage depending on
the system model number. In addition, various
diagnostic programs reside on the 62GV.
The processing unit contains 16K, 24K, or 32K
. (K
=
1024 bytes) addressable positions of main
storage and 4K or 8K addressable positions of
control storage. F ET (field effect transistor) tech-
nology is used for both main and control storage.
The processing unit also contains registers,
gates, and ALUs that are controlled by the
microprogram.
The CE control panel contains lights and
switches used for maintenance of the system.
See Section 7 for detail.
The 33FD diskette drive provides input/output
capabilities by IBM diskettes. For example,
data can olso be entered on the diskettes by
key entry devices such as the IBM 3740 Data
Entry System.
Various diagnostic programs reside on the
diskettes.
The IBM System/32 can be ordered with either
the serial printer or the belt printer.
The serial printer has 132 print positions and uses
a 64-character set. It is a 7 x 7 wire matrix printer.
The serial printer is available in four models:
120 CPS (characters per second) bidirectional
80 CPS bidirectional
40 CPS bidirectional
40 CPS unidirectional
The two models of the 40 CPS printer are identical.
The attachment circuitry controls whether they
print only left-to-right or in both directions.
The belt printer has 132 print positions and a 48-
character set, a 64-character set, or a 96-character
set. The printing speed is 50,100,155, or 285 lines
per minute with a 48-character set.
The display unit is used for prompting, job
output, and error messages. Up to six lines of
40 characters per line can be displayed at one
time.
The keyboard controls system functions.
It is the key entry device for diagnostic pro-
grams and is also used as a data input device.
The communications adapter (BSCA/SDLC) is an
optional feature that allows the System/32 to
function as a point-to-point or a multipoint terminal
Data is transmitted or received serially-by-bit and
serially-by-character over voice grade communica-
tion networks (switched or nonswitched network).
The system can be connected to a half-duplex or a
full-duplex facility; however, the communications
adapter operates in half duplex only. That is,
transmission of data is only in one direction at a
time.
The operator control panel is used to turn the
power OFF and ON, load the diagnostic pro-
grams and control programs, and start and stop
the processing. The keyboard ready, processor
check, thermal check, and power check indi-
cator lights are also on the operator console.
Introduction
1-1
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