IBM RT PERSONAL COMPUTER AIX OPERATING SYSTEM
o A Virtual Resource Manager that utilizes the IBM RT Personal
Computer microprocessor and memory management capabilities to
- Demand-paged virtual memory management
- Device-independent I/O
- Controlled direct access to high-function display devices
- Multiple virtual terminals
- User extendable realtime interrupt handling
o Menu-driven installation and configuration procedures to simplify
system installation and assist in tailoring the system to support
o IEEE Floating Point support (ANSI/IEEE Std 754-1985)
o Support for attachment of ASCII workstations:
- IBM 3161 ASCII Display Station
- IBM 3163 ASCII Display Station (in 3161 Mode)
- IBM Personal Computer, IBM Personal Computer XT, IBM Portable
Personal Computer, and the IBM Personal Computer AT via
- ASCII terminals that adhere to ANSI 3.64 protocol as
implemented by DEC(3) VT100 and DEC VT220, or equivalent
- A documented system interface for programming support for
additional ASCII terminals
o Support for a variety of IBM RT Personal Computer printers and
(3) Trademark of Digital Equipment Corporation.
o Ability to operate with the following user interfaces:
- Usability services, which provides menus, command bars, and
windows designed for ease of learning and use
- UNIX (Bourne shell)
- DOS services shell, an interface with IBM Personal Computer
- TEN/PLUS(4) a user interface consisting of the File Manager
and History Display integrated with the INed editor
- C shell
o Ability to transfer ASCII files between IBM Personal Computer DOS
file systems and AIX file systems and to access interactively IBM
Personal Computer DOS files from the IBM Personal Computer DOS
o Programming interface support to access IBM Personal Computer DOS
files on fixed disks or diskettes from a program on the AIX
o Program development support
- Assembler and C compiler
- Source code control system
- Symbolic debugger
- Program updating capability with history control to manage
change levels of installed software.
- Error logging, tracing, and problem determination
- UNIX tools and utilities.
- Vi editor
o INed(4), a full-screen text editor
o Asynchronous terminal communication/emulation
o Programmer interface to facilities of the IBM PC Network
o Upwardly compatible support for a UNIX System V environment
- System V Release 1 base
- Selected UNIX System V Release 2 and Berkeley Software
Distribution(5) 4.2 Extensions
(4) Registered trademark of INTERACTIVE Systems Corporation.
(5) Developed at the Electrical Engineering and Computer Sciences
Department at the Berkeley Campus of the University of California
under the auspices of the Regents of the University of California.
IBM RT PERSONAL COMPUTER VIRTUAL RESOURCE MANAGER
o Support for I/O device drivers and device managers
o System operating options that can be configured by the user (for
example, minidisk size)
o Multiple virtual machine support for hardware and system software
o Multiple virtual terminal support through:
- Monitor mode for direct access to console displays
- Character mode for device-independent access to console
o Resource-sharing support with the IBM RT Personal
Computer/Personal Computer AT Coprocessor Option
o Virtual memory management services
o User-extendable realtime interrupt processing
IBM RT PERSONAL COMPUTER AIX OPERATING SYSTEM
The IBM RT Personal Computer AIX Operating System is a
multiuser, multitasking virtual memory operating system.
The Virtual Resource Manager portion of the AIX Operating
System provides a high-level multitasking machine interface. It
provides hardware-independent device interfaces that allow the
hardware device configuration to be modified without affecting the
operating system or application software. Logical disk support
(minidisks) improves system management capability and allows both IBM
Personal Computer DOS and AIX formatted files to exist on the same
fixed disk. The support for the main system displays includes
multiple virtual terminal support. This allows a user to run
multiple tasks simultaneously from a system-attached keyboard/display
and to switch between the tasks. All tasks continue executing while
one task has control of the keyboard and display. Each task can be
written as if it had exclusive control of one or more displays.
Programmers can use the interrupt handling capabilities of the
Virtual Resource Manager to write device managers and device drivers
to support realtime processing applications.
The AIX Operating System contains a number of functions for
display and console support. Character mode provides a
device-independent interface. Monitored mode provides direct access
to the display. A pointing device (mouse) and sound are supported.
Window-management routines allow a user to open multiple full-screen
windows and "hot key" between them. Additional features support
color functions and extended graphics.
The AIX Operating System, in conjunction with specialized
hardware, provides virtual memory support. The 1 terabyte of virtual
memory addressability is divided into segments of 256Mb, each with
storage protection provided for each 2Kb page. Virtual memory allows
the operating system and application programs to be written and
executed without being limited to the size of the actual physical
memory that is installed on the executing system. Programs and user
data-file segments may be mapped into memory segments, allowing the
file data to be accessed as memory.
The AIX shell is a command interpreter that serves as an
interface between the user and the operating system. It reads the
user's command, calls the corresponding program, and executes it.
The command may be a single AIX command, multiple commands (a
procedure), or a program. The AIX shell will be familiar to UNIX
The IBM Personal Computer DOS shell provides a DOS-like user
interface to the AIX Operating System as well as access to both DOS
and AIX files. Most internal IBM Personal Computer DOS Version 3.0
commands are supported. The DOS shell can interactively read and
write DOS formatted diskettes. Commands available in the DOS shell
convert ASCII files between DOS and AIX formats. The DOS shell will
be familiar to users of IBM Personal Computer DOS.
The installation of the AIX Operating System is accomplished
through a menu-driven user interface that assists the user in
allocating disk space and setting other system parameters at
installation time. Most system defaults are modified automatically
to conform with the hardware configuration of the system, or the user
may specify other parameters to tailor the system for unique
requirements. Devices, adapters, and minidisks can be added by using
AIX commands that prompt the user for any required input.
Configuration files are automatically updated, file systems and
queues created, and the system kernel rebuilt, if necessary. Thus,
most of the information required for system installation is included
in the AIX Operating System installation tools. Also included in the
AIX Operating System are facilities for a uniform method of
installing other IBM RT Personal Computer system and application
The Operating System includes an enhanced print command to
facilitate spool queue handling and a command to facilitate adding
new users to the system. Also provided is the Connect(6) command,
which allows concurrent work on an IBM RT Personal Computer and
another UNIX system, such as Personal Computer/IX, IX/370, or another
IBM RT Personal Computer, as well as non-UNIX systems, via remote
The AIX Operating System contains a software emulation of the
floating-point functions (ANSI/IEEE Std 754-1985). The optional IBM
RT Personal Computer Floating-Point Accelerator may be installed for
improved performance of programs that use floating-point routines.
Programs may be compiled to use the IBM RT Personal Computer
Floating-Point Accelerator if it is available at execution time. If
it is not available, software emulation may be used. Alternatively,
the program may be compiled so that the Floating-Point Accelerator is
required for execution, providing additional improved performance.
This gives the user the option of making the code portable or
optimizing it for performance.
Printers are supported via an extended Personal Computer ASCII
print data stream. In addition, passthrough mode may be used by
those applications that require the ability to use the unique
features of a specified printer. The AIX Operating System provides a
common application interface to the following printers:
o IBM 4201 Proprinter
o IBM 3812 Pageprinter
o IBM 5201 Quietwriter Models 1 and 2 Printer
o IBM 5152 Graphics Printer (withdrawn from marketing)
o IBM 5182 Color Printer (withdrawn from marketing)
(6Trademark of INTERACTIVE Systems Corporation.
The following plotters are supported via the asynchronous
(RS232C) serial ports on the IBM RT Personal Computer:
o IBM 6180 Color Plotter
o IBM 7371 Color Plotter
o IBM 7372 Color Plotter
o IBM 7374 Color Plotter
o IBM 7375 Color Plotter Models 1 and 2
The AIX Operating System provides support for the following
o IBM 6153 Advanced Monochrome Graphics Display
o IBM 6154 Advanced Color Graphics Display
o IBM 6155 Extended Monochrome Graphics Display
o IBM 5151 Personal Computer Display
o IBM 5154 Personal Computer Enhanced Color Display
o ASCII workstations (See "Highlights.")
The AIX Operating System includes several features designed to
support program development on the IBM RT Personal Computer. For
example, new device drivers may be written in the C language and
integrated into the Virtual Resource Manager to support new hardware.
Programming interfaces have been provided to install and configure
application programs and new devices in a uniform manner. The
publications are designed to assist programmers whether or not they
have previous experience with UNIX-like environments. An Assembler
and a C compiler are shipped with the AIX Operating System.
There are numerous problem determination aids within the AIX
Operating System. Most hardware errors are automatically logged, and
these logs may be accessed with the error analysis functions to
assist in isolating intermittent problems. Trace functions are
provided for additional assistance. A history record is maintained
whenever a program is updated to assist in keeping system consistency
and program level control.
Functions are provided to apply software updates, test the
updates in an application environment, and then commit or reject the
Several programs contained in the AIX Operating System may be
INED: The INed editor is part of the TEN/PLUS user interface. In
addition to the INed editor, the TEN/PLUS user interface consists of
the File Manager and the History Display. The INed Editor is the
highest function editor shipped with the AIX Operating System. It is
a full-screen text editor that allows users to view and edit files.
The editor supports multiple concurrently edited files and multiple
windowing for a single file or for multiple files. Other functions
include vertical and horizontal scrolling, word wrap, cut and paste,
and move/copy capabilities. The editor also allows execution of AIX
system commands within an edit session. Editor commands are executed
through function key sequences. The INed Editor also provides an
enhanced user interface to the INmail/INnet(7)/File Transfer Program
(7INmail and INnet are trademarks of INTERACTIVE Systems Corporation.
USABILITY SERVICES: Usability Services provides an easy-to-use
interface to many of the AIX Operating System functions. A subset of
the commands and parameters are supported through a command bar and
pop-up menus. Window support allows the creation of new windows as
well as the ability to view a list of the existing windows and their
status. Tools windows provide access to AIX system functions and the
ability to add new functions. File windows give access to the AIX
directory structure and allow initiation of commands associated with
data files. Finally, the shell windows provide access to the IBM
Personal Computer DOS shell or the UNIX shell for those who prefer
direct access to the commands. These features are available to users
on any of the supported attached terminals.
Multiple concurrent windows are supported on the console
terminal, allowing easy switching among multiple active tasks. The
options on the command bar and menus may also be accessed with an
optional pointing device (mouse) on the console terminal.
ASYNCHRONOUS TERMINAL EMULATION: This option allows the IBM RT
Personal Computer to emulate an ASCII display terminal connected to a
host computer. It provides a convenient means for establishing the
connection through automatic dialing and connection configuration
data. After connection, the operator can interact with the remote
system and send/receive files via the XMODEM protocol. This may be
used to connect with remote private data bases and other IBM RT
Personal Computer systems.
The menu selection functions include:
o Connect services
o Directory services
o Session parameter generation
o Operating system command interface
o File/send/receive commands
MULTIUSER SERVICES: The AIX Operating System supports up to eight
concurrent terminal users. The Multiuser Services option provides the
system accounting functions. System usage is recorded for each user,
including elapsed time for various components of the system as well
as space utilization of the disk files. If desired, charges can be
generated at the end of each accounting period.
EXTENDED SERVICES: Extended Services functions are designed to
support program development. In addition, there are many
miscellaneous functions included in this option.
The Source Code Control System is a collection of programs
that manage changes to source and text files. It provides facilities
for storing, updating, and retrieving any version of a controlled
file; controls updating privileges to a file; and records who made
each change, when it was made, and why it was made. Source Code
Control System assists software developers during the development,
testing, and support of programs. It includes the following features:
o Restores files to a previous stage of development or maintenance.
o Stores the original file and changes made to it so that common
code or text is stored only once.
o Protects from unauthorized changes.
o Automatic insertion of identifying information into source and
object code modules.
Extended Services also includes:
o UNIX-to-UNIX Copy Program to move files between UNIX systems
o Commands to execute tasks remotely on another AIX-based system
o UNIX games
BASE PERSONAL COMPUTER NETWORK SERVICES: The IBM RT Personal Computer
Base Personal Computer Network Services provides basic support for
the IBM PC Network local area network. It is a programming interface
that allows customer-supplied applications to use the facilities of
the IBM PC Network. It allows the exchange of messages and data
across the IBM PC Network with the IBM Personal Computer, the IBM
Personal Computer XT, the IBM Personal Computer AT, and the IBM RT
Personal Computer. The IBM RT Personal Computer base PC Network
services provide facilities that are functionally equivalent to those
provided in the IBM Network Basic Input/Output System (NETBIOS) for
the IBM Personal Computer.
The following section summarizes some of the features and
functions in the IBM RT Personal Computer AIX Operating System that
are additions to the UNIX System V Release 1-derived base. They are
from UNIX System V Release 2, Berkeley Software Distribution 4.2,
Extensions by INTERACTIVE Systems Corporation, and IBM.
o UNIX System V Release 2
- Vi full screen editor
- Expanded "curses" screen graphics library and terminfo
- Enhanced Bourne shell
- Additional commands (for example, ls, ar, at, batch, pg)
o Berkeley Software Distribution 4.2 Extensions
- Enhanced signals, including five additional signal processing
- Multiple concurrent group access support
- File enhancements, including file synchronization and
- C shell and BSD user interface support
o INTERACTIVE Systems Corporation
- Enhanced system performance and virtual paging support
- Improved installation and system configuration procedures
- File system enhancements for an improved backup/restore
- Improved terminal port management for enhanced teletypewriter
equipment device characteristics
- Generalized queuing system for improved job and print queue
- INed full screen editor for data creation and manipulation
- Connect command to facilitate remote connections
- A point-and-select menu interface via Usability Services
- An IBM Personal Computer DOS-like interfaces/via DOS shell
- IBM Personal Computer DOS file import/export facilities
- Extended "curses" library functions
- Window design and management facilities for displays
- Dynamic configuration facilities
- Device independence for printers and displays via common
- Generalized spooling support for private or public queues
- Optional software emulation of the hardware floating point
- Multiple interactive session management, initiated via menu
IBM RT PERSONAL COMPUTER VIRTUAL RESOURCE MANAGER
The IBM RT Personal Computer Virtual Resource Manager permits
device-independent I/O. Most changes in the hardware configuration
(other than the addition or deletion of device drivers for unique
hardware options) can be made without disrupting the software.
Device drivers control the interface between the I/O device
adapters and the process (or device manager). Device managers
control multiple device drivers or virtualized devices, such as
virtual terminals. This control of hardware devices allows the
operating system and application programs to be unaffected by most
hardware configuration changes.
Virtual Resource Manager provides a set of subroutines that
allow many functions to be performed in a common way without having
to write unique programs. These subroutines include functions to
manage processes, programs, and virtual memory.
Virtual storage is managed through the Virtual Resource
Manager that provides paging support for the AIX Operating System or
other virtual machines. The virtual machine can treat memory as if
it were real with the Virtual Resource Manager providing the required
memory management functions. The virtual machine has the option of
being interrupted when page faults occur so that it may switch to
another task. The 1 terabyte of virtual memory addressability is
divided into 256Mb segments with storage protection provided on 2Kb
Virtual Terminal Manager manages the physical terminal
devices, console displays, input devices (keyboard, mouse), and the
speaker and presents virtual terminals to the virtual machine. These
functions insulate the operating system and application program from
the variations among supported terminals. An IBM RT Personal
Computer user can have several virtual terminals existing
simultaneously on the system console. The virtual terminals are
logically independent of each other but share physical resources.
Only one virtual terminal can be active at a time in the sense of
being able to directly accept input and to modify the physical
Virtual Terminal Manager allows the user to manipulate the
mapping of virtual terminals to the physical resources. This
manipulation includes making a virtual terminal visible on the
physical display or concealing it with another virtual terminal. It
provides access to a speaker with controls for frequency and duration
A virtual terminal can be defined in one of two modes:
o Monitored mode - Virtual Resource Manager control of the display
device is relinquished to the application. This direct level of
support provides full access to the functions of the console
display device to the application developer.
o Character mode - Virtual Resource Manager provides emulation for
device-independent access to console display devices.
The system hard files may be partitioned into minidisks by
using the minidisk management support in Virtual Resource Manager.
Minidisk support is provided to allow for multiple concurrent users
through the logical disk concept. It also allows minidisks to be
configured for IBM Personal Computer DOS data, thus allowing
coexistence of AIX Operating System files with other file system
organizations. Each disk can have multiple minidisks for system
management. Virtual Resource Manager manages these logical disks as
Programmers can use the interrupt-handling capabilities of
Virtual Resource Manager to write device managers and device drivers
to support realtime processing applications.
The following publications are shipped with the IBM AIX
Operating System. Additional copies may be purchased through your IBM
o IBM RT Personal Computer Concepts (GC23-0784)
o IBM RT Personal Computer Installing and Customizing the AIX
Operating System (SV21-8001) which includes IBM RT Personal
Computer Bibliography and Master Index,
o IBM RT Personal Computer Usability Services Reference
(SV21-8003), which includes IBM RT Personal Computer Exploring
Usability Services, IBM RT Personal Computer Usability Services
Guide, IBM RT Personal Computer Usability Services Keyboard
Reference Charts, IBM RT Personal Computer Usability Services
Quick Reference Card
o IBM RT Personal Computer Using and Managing the AIX Operating
o IBM RT Personal Computer AIX Operating System Commands Reference
o IBM RT Personal Computer INed (SV21-8006)
o IBM RT Personal Computer Messages Reference (SV21-8002)
o IBM RT Personal Computer AIX Operating System Communications
The following publications document functions in the AIX
Operating System and may be purchased through your IBM marketing
o IBM RT Personal Computer Virtual Resource Manager Technical
Reference (SV21-8013) - This manual is intended for individuals
involved in writing programs at the operating system level that
require an interface to Virtual Resource Manager. It defines
Virtual Resource Manager routines, explains the use of Virtual
Resource Manager debugger, explains how to develop and install
code into the Virtual Resource Manager, and defines the Virtual
Machine Interface to the Virtual Resource Manager-supplied device
drivers. This manual will be updated via the Update Information
Service for no additional charge.
o IBM RT Personal Computer AIX Operating System DOS Services
Reference (SV21-8012) - This manual provides reference
information about IBM RT Personal Computer AIX Operating System
DOS Commands; describes DOS Shell file and directory
specifications, search paths, devices, ed (the line editor),
standard input and output, and commands. This book also includes
information on customizing AIX DOS defaults, differences between
the DOS and AIX DOS, and technical information for experienced
o IBM RT Personal Computer Using AIX Operating System DOS Services
- This manual is a step-by-step guide to assist in getting
started on the DOS shell and to perform some common tasks. This
guide includes general information on using diskettes and fixed
disks, using DOS shell function and command-line editing keys,
naming, organizing and locating files, entering and leaving IBM
RT Personal Computer, starting and stopping the DOS shell, and
issuing some frequently used DOS shell commands. It is included
in the AIX Operating System DOS Services Reference.
o IBM RT Personal Computer Assembler Language Reference (SV21-8011)
- This manual discusses the IBM RT Personal Computer 032
Microprocessor and its Assembler Language. It describes syntax
and semantics, instructions to the processor (machine
instructions), and instructions to the assembler
(pseudo-operations). This manual also shows how to link and run
Assembler Language programs, including linking to programs
written in C language.
o IBM RT Personal Computer C Language Guide and Reference
(SV21-8008) - This manual contains a guide to writing, compiling,
running, and debugging C language programs. A reference section
describes C language data structures, operators, expressions, and
o IBM RT Personal Computer AIX Operating System Technical Reference
(SV21-8009) - This manual describes the system calls and
subroutines that a C programmer uses to write programs that
interface with the operating system.
o IBM RT Personal Computer AIX Operating System Programming Tools
and Interfaces (SV21-8010) - This manual provides a general
description of programming on the IBM RT Personal Computer. It
gives details about using the AIX Operating System tools to
develop, compile, and debug C language programs. It also gives
examples of how to use system calls and library subroutines to
create programs. In particular, the use of program interfaces
for IBM added functions is described.
o IBM RT Personal Computer AIX Operating System Text Formatting
Guide (SV21-8037) - The guide describes the functions and
capabilities of the NROFF and TROFF text formatters and of other
associated text processing programs.
o IBM RT Personal Computer Base Personal Computer Network Services
(SV21-8030) - This manual provides basic support for the Personal
Computer Network Local Area Network. It documents the interface
for customer-supplied applications to use the facilities of the
Personal Computer Network.
One copy of IBM RT Personal Computer Installing the Virtual
Resource Manager (SV21-8014) is provided with the IBM RT Personal
Computer Virtual Resource Manager. Additional copies may be
purchased through your IBM marketing representative.
The IBM RT Personal Computer Virtual Resource Manager
Technical Reference (SV21-8013) documents functions in the IBM RT
Personal Computer Virtual Resource Manager but is sold separately.
It is intended for individuals involved in writing programs at the
operating system level that require an interface to the Virtual
Resource Manager. It defines the Virtual Resource Manager routines,
explains the use of Virtual Resource Manager debugger, explains how
to develop and install code in Virtual Resource Manager, and defines
Virtual Machine Interface to Virtual Resource Manager-supplied device
These publications may be ordered and updated via the System
Library Subscription Service (SLSS) with the exception of the Virtual
Resource Manager Technical Reference manual, which will be updated
via Update Information Service.
Planned availability is March 1986. Planned availability of
AIX Operating System Support for the IBM RT Personal Computer Color
Graphics Display and Extended Monochrome Graphics Display is third
SPECIFIED OPERATING ENVIRONMENT
HARDWARE REQUIREMENTS: The minimum machine requirement is an IBM RT
Personal Computer with a display (for example, the IBM RT Personal
Computer Advanced Color Graphics Display, the IBM RT Personal
Computer Advanced Monochrome Graphics Display, or the IBM Personal
Computer Display). The IBM Personal Computer Network Adapter
(6450213) is required by the Base Personal Computer Network Services
program portion of the AIX Operating System.
Optionally, an asynchronous modem can be installed for use
with Asynchronous Terminal Emulation, UUCP, or the Connect command.
Program support is provided for asynchronous modems that support the
following specifications: EIA RS-232C Standard (dated August, 1969)
or the CCITT Recommendations V.24/V.28 as published in the report of
the CCITT 7th Plenary Assembly (Yellow Book), Geneva, 10-21 November
1980. Program support is also provided for auto-dialer modems that
conform to the AT command set using asynchronous protocol.
SOFTWARE REQUIREMENTS: There are no software prerequisites for the
AIX Operating System or Virtual Resource Manager.
SECURITY, AUDITABILITY, AND CONTROL
User management is responsible for evaluation, selection and
implementation of security features, for administrative procedures,
and for appropriate controls in application systems. For
applications in which sensitive data is sent over external
communication facilities, user management may wish to pursue the
application of cryptography.
When users are added to the AIX Operating System they are
assigned a user ID and assigned to a group. They may also be assigned
a password, which is required at signon time. Each group is allowed
access to files based on the authorization of the file owner.
A file may be accessed by its owner and by groups (of users).
A group may be allowed full access, or the access may be limited
based on the file owner's authorization.
CUSTOMER RESPONSIBILITY: The customer is responsible for the
installation and use of these licensed programs. The Virtual
Resource Manager is shipped as part of the AIX Operating System.
Therefore, the Virtual Resource Manager should be ordered only for
users who have, or who are developing, programs that will not use the
AIX Operating System.
See IBM Product Announcement 186-005, dated January 21, 1986.
Orders for any quantity can be taken by NCMD/SWMD marketing
To order these programs, three feature numbers must be ordered
with the type-model:
Description Asset Distribution Time
Registration Medium Charge
IBM RT Personal Computer 9001 5034 4532
IBM RT Personal Computer 9001 5033 4531
Virtual Resource Manager
TERMS, CONDITIONS, AND CHARGES
IBM RT Personal Computer
Advanced Interactive Executive
Operating System $3,400
IBM RT Personal Computer
Virtual Resource Manager $1,000
TERMS AND CONDITIONS
WARRANTY: Warranty period for the media is 90 days. Licensed program
warranty is in effect until program service is discontinued by IBM on
six months' written notice, or until February 1, 1989, whichever
LICENSING: The IBM Program License Agreement is packaged and shipped
with the program and is visible to the customer before the diskette
package is opened. The customer is advised that opening the diskette
package indicates acceptance of these terms and conditions. No
signature is required. Program specifications are available for
customer inspection prior to acceptance. These specifications will be
available from IBM at program availability.
QUANTITY DISCOUNT AGREEMENT (QDA): These programs are eligible
licensed programs under the terms and conditions of the QDA
(Z125-3412) and its Exhibits for IBM RT Personal Computer Licensed
Programs (Z125-3859 and Z125-3860). These programs are in Category
PROGRAM SERVICES: Central service will be provided. Central service
for all supported IBM RT Personal Computer software for defect
support is provided through Service line at 1-800-237-5511 from 7:00
a.m. to 7:00 p.m. central time, Monday through Friday, excluding
national holidays. During the support period, IBM will, without
additional charge, respond to defects in the current unaltered
portion of a current release of IBM RT Personal Computer software.
The IBM RT Personal Computer Service line will respond by issuing
defect correction information, such as correction documentation,
corrected code, a restriction, a bypass, or a notice of availability
of corrected code.
Program services will be available until February 1, 1989, or
until discontinued by IBM on six months' written notice, whichever
EDUCATIONAL ALLOWANCE: A 15% educational allowance is available to
qualifying institutions. This allowance is not additive to any other
discount or allowance.