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OS/2 Help File
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1992-10-17
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ΓòÉΓòÉΓòÉ 1. Preface ΓòÉΓòÉΓòÉ
Trademark Acknowledgements
The following terms are trademarks or registered trademarks of the IBM
Corporation in the United States and/or other countries:
IBM PS/2 RISC System/6000
OS/2 Operating System/2 Presentation Manager
SAA Systems Application Architecture Extended Services
Microsoft and MS-DOS are registered trademarks. Windows, Windows NT, Win32, and
Win32s are trademarks of Microsoft Corporation.
Disclaimer
Some of the information in this paper concerns future products, or future
releases of current, commercially available products. Discussion of Windows is
based on information which the Microsoft Corporation has made publicly
available as of October 1, 1992, or information in the public trade press and
is subject to change. IBM's future products and their performance, functions
and availability are based upon IBM's current intent and are subject to change.
Special Notices
References in this publication to IBM's current and future products, programs
or services do not imply that IBM intends to make these generally available in
all countries in which IBM operates.
IBM may have patents or pending patent applications covering subject matter in
this document. This document does not grant anyone a license to those patents,
patent applications or to any other IBM intellectual property.
ΓòÉΓòÉΓòÉ 2. Executive Summary ΓòÉΓòÉΓòÉ
ΓòÉΓòÉΓòÉ 2.1. Why OS/2 Surpasses both Windows 3.x and Windows NT ΓòÉΓòÉΓòÉ
Most people agree that, as an operating system, IBM's OS/2 2.0 is superior to
Microsoft's Windows 3.1. To compete with IBM's OS/2, Microsoft has announced
another system, Windows NT. Windows NT is not yet available and Microsoft says
the first version may ship in late 1992 or in 1993.
When it finally arrives, Windows NT is expected to address some of Windows
3.1's shortcomings. However, based on the preliminary beta release and
Microsoft's public comments, Windows NT will only partially close the gap with
OS/2 2.0.
For example, the state of the art in user-friendly interfaces today is the
object-oriented graphical user interface, an example of which is the Workplace
Shell in OS/2 2.0. Only recently has Microsoft begun to talk about releasing a
similar user-friendly interface -- sometime in 1994.
Today, OS/2 2.0 surpasses Windows 3.1 in the following areas:
o Superior crash protection
o Greater number of applications supported
o Superior multitasking
o Object-oriented graphical user interface
o Superior file system
o More memory available for applications
Today, Windows NT is not available. In the timeframe that Microsoft is
expected to complete Windows NT, OS/2 will have moved forward significantly.
The following enhancements are planned for OS/2 later in 1992:
o Additional performance improvements, especially for the minimum hardware
configurations
o Support for more displays, printers and other devices
o Improved graphics engine
o Support for Windows 3.1 applications
When the first version of Windows NT finally arrives, IBM is confident that
OS/2 will still surpass it in the following areas:
o Compatibility with DOS and Windows applications
o Greater number of applications supported
o Object-oriented graphical user interface
o Less expensive hardware requirements (memory and disk)
So, a customer can choose to live with the shortcomings of Windows 3.1 and wait
for Windows NT to arrive. However, when they are finished with this wait, they
may face a hardware upgrade and a conversion of Windows applications.
Or, a customer can enjoy the benefits of OS/2 2.0's superior operating
environment, avoid the upgrade and the conversion, and still have a superior
operating environment in the future.
Why do anything else?
ΓòÉΓòÉΓòÉ 3. Why OS/2? ΓòÉΓòÉΓòÉ
ΓòÉΓòÉΓòÉ 3.1. The best of both worlds ΓòÉΓòÉΓòÉ
In the new PC environment, both personal productivity and line-of-business
applications are essential. OS/2 can satisfy both needs. It provides a better
DOS than DOS itself, and it runs a wide range of DOS and Windows applications.
In addition, OS/2 2.0 is a superior platform for running in-house mission
critical applications with industrial strength, robust protection, and powerful
multitasking. Users don't have to choose between different systems for their
different needs - OS/2 can do both.
ΓòÉΓòÉΓòÉ 3.1.1. Freedom of Choice ΓòÉΓòÉΓòÉ
Today's computing environment can be confusing; the variety of options can be
overwhelming. When making choices about hardware and software platforms, it is
difficult to follow a path which keeps a wide range of options open. Too often
choices are constrained by compatibility issues or by a limited growth path.
OS/2 2.0 aims to simplify the decision by providing a choice; the widest range
of applications on a wide range of hardware.
OS/2 2.0 runs DOS, Windows and OS/2 16-bit and 32-bit applications, the widest
range of applications available on an Intel-based platform. In fact, OS/2 2.0
is such a superior environment that even if users only run DOS applications on
a 386-based machine, OS/2 2.0 is the best environment in which to run them.
Furthermore, applications running under OS/2 2.0, whether they are DOS, Windows
or OS/2 based, provide added value by working together; sharing information and
running from the common Workplace Shell. This not only protects your current
investment in DOS, Windows and OS/2 applications, but adds value by integrating
them.
In addition, OS/2 2.0, and Extended Services and OS/2 LAN Server are supported
on a wide range of IBM-compatible hardware as well as IBM PS/2s. This means the
user can run OS/2 2.0 with confidence on machines from vendors like Compaq,
Olivetti, Dell, Hewlett Packard, Toshiba, and others, and IBM support can be
included. In fact, IBM has certified over 260 configurations from 71 hardware
vendors so it is highly likely that your PCs equipped with an Intel 386SX or
above processor are supported.
ΓòÉΓòÉΓòÉ 3.1.2. A productive environment for the user ΓòÉΓòÉΓòÉ
OS/2 provides an object-oriented user interface, the Workplace Shell, which
allows business users to focus on the information they want to work with, not
the application that needs to be loaded. This business-oriented way of working
helps users to become more productive, by concentrating more on what they want
to do, and less on how to do it. It also provides a single consistent
environment in which multiple applications can be loaded from different
sources. Additionally, it is an extremely easy environment to learn, since once
a user knows how to drag a file's icon with the mouse to put it into a folder,
he can use the same operation to print it, and to copy it to another disk or
erase it. In addition, companies can derive the benefits of a standard
interface which complies with IBM's Common User Access (CUA) definition for
user interface design.
Also, since many applications can be loaded and running at the same time, users
can be more productive, especially in work that involves much interruption and
switching from one task to another. OS/2's true multi-tasking means that
long-running processes can simply be switched to run in the background, while
the user continues with something else - resulting in less 'wait time' for the
user. At the same time, more can be done with the existing set of applications
by allowing them to share information easily through consistent interfaces like
the Presentation Manger clipboard.
ΓòÉΓòÉΓòÉ 3.1.3. A platform you can rely on ΓòÉΓòÉΓòÉ
When the PC becomes the center of information processing, as it often is in
today's environment, then the PC platform must show the stability and
reliability of the host environment. Today, DOS and extensions to DOS, like
Windows, do not provide the protection that OS/2 2.0 offers. OS/2 has been
designed to protect applications from one another and delivers today the stable
platform required for full multitasking and greater protection from system
crashes. It is little use having the most fault tolerant server or host if the
client workstations are not fault tolerant. And many users of productivity
applications, like word-processors and spreadsheets, consider their PCs to be
"mission critical". For this reason, reliability is a requirement for every PC.
ΓòÉΓòÉΓòÉ 3.1.4. Superior connectivity ΓòÉΓòÉΓòÉ
OS/2's strong multitasking and robust protection make it the best operating
system available for connectivity applications such as client/server and
distributed processing. In addition, OS/2 has Extended Services for OS/2,
which provides communications and database functions, and OS/2 LAN Server,
which provides a full client-server environment. This allows networking to be
an integral part of the operating system, and provides high functionality at a
much more economical cost than buying many separate packages.
OS/2 is not only a superior server platform, but also the most functional and
stable client. It provides a consistent platform for both server and client,
can handle multiple concurrent communications protocols (e.g. NETBIOS, APPC,
IPX, TCP/IP) with ease, and even provides a LAN-independent user interface to
mixed vendor networks. In addition, it is enabled for automated LAN-based
installation. Most importantly, OS/2 offers the stability and reliability in a
client to match the reliability of the server or host.
The result is that "mission critical" applications which depend on
communications with various systems can be implemented much more safely in OS/2
than on DOS or its extensions.
ΓòÉΓòÉΓòÉ 3.1.5. The integrated system ΓòÉΓòÉΓòÉ
OS/2 allows DOS, Windows and OS/2 applications to run together while providing
a GUI, and the database, communications, and LAN support included in Extended
Services for OS/2 and LAN Server. For developers, this means the APIs and
services have been designed to work together, eliminating the need for the
systems integration of a variety of DOS-based packages, a process which often
presents incompatibilities or problems.
Instead, the OS/2 function has been designed and tested to work together - IBM
has already done the integration work. In addition, the Workplace Shell
environment integrates DOS, Windows and OS/2 applications and allows them to
work together, even though they may have been written by different vendors.
That's why OS/2 is The Integrating Platform for the 1990s.
ΓòÉΓòÉΓòÉ 3.1.6. 32-bit power ΓòÉΓòÉΓòÉ
OS/2 2.0 is a 32-bit system. It gives users the advantages of a 32-bit system,
which include superior application performance and the opportunity to fully use
the 386 and 486 hardware that runs OS/2. It provides users with a 32-bit system
NOW - eliminating their need to wait for other alternatives with uncertain
delivery dates.
The 32-bit API also allows developers to create richer, more sophisticated
applications. Applications like multimedia require an advanced 32-bit
interface to exploit their full potential and power. Additionally, moving to
the OS/2 32-bit API gets developers ready for future developments in OS/2.
ΓòÉΓòÉΓòÉ 3.1.7. Platform for growth ΓòÉΓòÉΓòÉ
OS/2 will be the base of new developments for many of the features that will be
requirements for the workstations of the mid-90's. These include multimedia,
object-oriented systems, support for the Distributed Computing Environment
(DCE) and portability across different processors. These applications will
require a robust, architected and powerful 32-bit system, and that system is
OS/2.
IBM plans to enhance OS/2's capabilities for object-oriented application
development in distributed environments by advancing the function provided by
the System Object Model. IBM intends to leverage a subset of Taligent's object
services and frameworks to benefit OS/2 application development and enable
future compatibility with Taligent's environment.
ΓòÉΓòÉΓòÉ 3.1.8. Value for money ΓòÉΓòÉΓòÉ
OS/2 2.0 offers a "3 in 1" environment, allowing users to run DOS, Windows and
OS/2 applications so there is no need to buy DOS or Windows separately. It also
includes a series of productivity applications, utilities and games at no
additional cost. OS/2 also provides scalable font support for both Windows and
OS/2 applications with Adobe Type Manager. OS/2 offers all this functionality
at a list price which is less than the combined list prices of DOS and Windows
3.1. [At the time of this writing, the suggested retail prices of MS-DOS 5.0,
Windows 3.1 and OS/2 V2.0 are $99.95, $149.00 and $149.00 respectively. ]
Upgrading from DOS or Windows makes the cost of moving to OS/2 even less.
ΓòÉΓòÉΓòÉ 3.1.9. Protects today's investment, and is a base for the future ΓòÉΓòÉΓòÉ
Today, OS/2 supports the widest choice of existing applications while meeting
the needs of current client-server and networked environments. OS/2 also
provides a strong base for future technologies and a very reliable migration
path. OS/2 currently offers what other environments can only promise for the
future - so why wait?
ΓòÉΓòÉΓòÉ 4. What are some alternatives to OS/2? ΓòÉΓòÉΓòÉ
ΓòÉΓòÉΓòÉ 4.1. Windows 3.x ΓòÉΓòÉΓòÉ
Microsoft Windows 3.0 and 3.1 are good attempts to work around some of the
architectural limitations of the 10 year old, 16-bit, single-tasking
architecture of DOS. They offer the user a more attractive interface and
provide an environment in which programs can be written to do limited
multitasking. The underlying architectural limitations still remain and it is
these limitations that will prevent Windows 3.x from fully satisfying the
demands of most in the 90's. Let us review these demands:
1. Reliability
2. Pre-emptive multitasking
3. Application support
4. Networking support
5. User interface
6. 32-bit
ΓòÉΓòÉΓòÉ 4.1.1. Reliability ΓòÉΓòÉΓòÉ
DOS was written to run on the Intel 8086/8088 processors available at the
beginning of the 1980s. These processors ran in "Real Mode", that is any
program could address and change any part of memory. Therefore any program
which made a mistake could overwrite itself or the operating system. In any
case the program would fail. This might be irritating to the user if it led to
lost work, but the impact was likely to be small.
Windows enabled more than one program to run, but still sometimes ran the
processor in Real Mode. In this situation, one failing program could
necessitate the shut-down of the whole system. This was the well-known
"Unrecoverable Application Error" (UAE). In Windows 3.1, Microsoft reduced the
frequency of the UAE in Windows 3.1 (and renamed the remaining UAEs to General
Protection Faults or "GPF".) However, as long as a program runs on today's DOS,
the potential for these failures remains. These failures can be very
irritating to end-users and can represent a real impact to their productivity.
For businesses that want to run "mission-critical" or higher-speed
communications applications on PCs, it can be potentially disastrous.
From the beginning, IBM designed OS/2 to be a "protected" operating system.
This means the operating system and the hardware cooperate to prevent failing
applications from impacting any other part of the system. For the user, that
means fewer problems and less inconvenience. For the business, it means lower
risk and greater productivity.
ΓòÉΓòÉΓòÉ 4.1.1.1. Multitasking ΓòÉΓòÉΓòÉ
Windows 3.x is built on the foundation of a single-tasking operating system,
DOS. Therefore, multitasking of Windows applications must be done within the
applications themselves. Programmers of Windows applications must explicitly
include "yield points" to enable other applications to get a share of the
processor time. This is called "cooperative application multitasking" and
results in inefficient use of available resources and unsatisfactory and uneven
response to users when multiple programs are running.
IBM designed OS/2 to be a multitasking system by basing multitasking in the
operating system, not the applications. For this reason, OS/2 can outperform
Windows 3.x in many multitasking situations. In practice, this advantage is
felt by the end-user in the increased smoothness of response. For example, an
OS/2 user can continue to type into a word processor while formatting a
diskette.
ΓòÉΓòÉΓòÉ 4.1.1.2. Application support ΓòÉΓòÉΓòÉ
OS/2 runs more Windows applications than Windows 3.1 because it enables users
to simultaneously run applications written for Windows Real Mode (Windows 2.x
applications) and Windows 3.x applications. (Windows 3.0 can run these
applications but not simultaneously with Windows 3.x applications.) OS/2 will
also run OS/2 applications written for OS/2 2.0 and all previous releases of
OS/2. An independent estimate put the customer investment in OS/2 applications
at 2 billion dollars, in addition to the 2 billion dollars invested by software
vendors.
OS/2 is the first mainstream 32-bit operating system for the Intel hardware
architecture. Many software vendors and companies are developing applications
that take advantage of the investment made in Intel 386 and 486 processor based
machines over the last several years. The second edition of the OS/2
Application Solutions Directory published by Graphics Plus, Inc. lists 1100
32-bit OS/2 applications available or in development as of July 1992. OS/2 has
the widest applications portfolio of any operating system in the market.
ΓòÉΓòÉΓòÉ 4.1.1.3. Networking ΓòÉΓòÉΓòÉ
The role of the Personal Computer is changing; fewer business PCs are now
stand-alone machines and highly connected client-server architectures will
provide the Information Technology (IT) systems of the 90s. The original PCs
were not designed to manage the demands of networking, which always required
compromises for DOS-based PCs. The limited memory available for programs in
DOS often meant that certain, larger applications were mutually exclusive with
networking. Networking with Windows 3.0 was not always easy because of the
various techniques used to circumvent the memory restrictions.
Windows 3.1 has helped ease these difficulties but has not completely
eliminated the restrictions. In addition, the implementation of networking
programs as Terminate and Stay Resident (TSR) programs (which ran in the Real
Mode of the Intel processor) further compromised the reliability of the system.
Networking is fundamentally a multitasking activity and the limited
multitasking in Windows was sometimes inadequate to manage high-speed
communications tasks running in the background.
Networks are increasing in size and effective network and systems management is
becoming more important. A sophisticated multi-tasking system is required to
ensure these tasks can be safely performed in the background at any time
without the intervention or knowledge of the user. OS/2 was designed to be
part of a network and consequently, is an ideal choice for a client
workstation.
ΓòÉΓòÉΓòÉ 4.1.1.4. User interface ΓòÉΓòÉΓòÉ
Windows introduced many users to the benefits of a Graphical User Interface
(GUI ). Research shows that the underlying conceptual model presented by a
software system is as important as the actual look of the program. Windows is
still harnessed to the same underlying organization as DOS. This necessitates
users understand the structure of the file system, the distinction between
program and files, and so on.
The OS/2 user interface (the Workplace Shell) is a second generation GUI and
presents an interface modelled on the real world. Users interact with the
system by manipulating "objects"; dragging a file to a printer for instance.
IBM has conducted thousands of hours of usability research to ensure OS/2 is
easy to use, not just easy to learn.
In addition, the Workplace Shell acts as a unifying layer for applications. No
matter for what system they were originally designed, they are used in the same
way and information can be shared between them using the same techniques.
Printing is easier in OS/2, enabling users to forget about the mechanics of the
system and simply accomplish their tasks. OS/2 is designed to work the way
users work, not force them to work the way the computer works. Finally, OS/2
removes from many users the responsibility for understanding and controlling
such things as extended memory management (provided by add-on products to DOS
like QEMM) and enables them to concentrate on their jobs.
ΓòÉΓòÉΓòÉ 4.1.1.5. 32 bit ΓòÉΓòÉΓòÉ
For the end-user, the internal design of the system is probably not important.
However, for the decision maker, the architectural basis of the product is
significant because it dictates the range of future possibilities.
Microsoft has announced a 32-bit API for Windows 3.1 (Win32s), but it is
important to understand the limitations inherent in this approach. As the full
name (Win32 subset) implies, Win32s implements only some of the API calls in
the full Win32 API which Microsoft states is supported in Windows NT. This
means that developers may have to make a choice; They can write an application
common to Windows 3.1 and Windows NT (which cannot exploit the additional
functions in Windows NT), or develop separate applications for Windows 3.1 and
Windows NT. In the latter case, the benefits of the Win32s API will be limited
to the flat 32-bit memory model (which a Win32s Dynamic Link Library will map
back to the native 16-bit segmented memory model of Windows 3.1). The
performance implications of this are unknown.
OS/2 implements a complete 32-bit API with advanced features today. The
benefits of this increase as developers ship more advanced, high-performance
applications for OS/2. The requirements of the 90's are already here and OS/2
can satisfy them today.
ΓòÉΓòÉΓòÉ 4.1.2. Windows NT ΓòÉΓòÉΓòÉ
Microsoft has announced it will provide a completely new operating system
called Windows NT. It will share the Windows name and provide some
compatibility to existing Windows programs. It has been announced for
availability at the end of 1992 or early 1993. At this time, only pre-beta
code is available and this discussion is based on the functions present in this
code and stated by Microsoft representatives to be in plan. It must be
stressed that Windows NT is not an available product.
Windows NT will implement a number of subsystems on a newly written kernel that
borrows elements from different operating system models. [A Grand Tour of
Windows NT - Microsoft Systems Journal, Jul/Aug 1992 ] Microsoft states that
important features of Windows NT will be:
o Preemptive multitasking and multi-threading
o Protected architecture
o 32-bit system
o Support for DOS and existing (i.e. 16-bit) Windows applications
IBM agrees that these features are important, which is why they are already
available in OS/2 2.0. Other features that Microsoft claims that Windows NT
will have are:
o Improved security API
o Support of symmetrical multiprocessing (SMP)
o Portability (easily migrated to different hardware architectures)
o POSIX
IBM agrees that these features are likely to be of increasing importance in the
future and intends to add these features to a future version of OS/2. However
it is unclear to what extent these features are required by customers today, or
whether they will be more important than other technologies on which IBM is
also working. In particular, the first version of Windows NT will not include
any object-oriented user interface technology (unlike OS/2 which incorporates
and uses the Workplace Shell / Systems Object Model (SOM) as the basis of its
object-oriented user interface).
When considering the value of a new operating system it is better to take a
business-oriented viewpoint rather than concentrating on the technology. In
particular users should consider two vital points: the resources required to
run an operating system and its compatibility with the existing application
portfolio.
ΓòÉΓòÉΓòÉ 4.1.2.1. Windows NT system requirements ΓòÉΓòÉΓòÉ
The recommended minimum configuration for Windows NT will be a fast Intel 386
with at least 8Mb of RAM and 100Mb of disk space. [Microsoft Windows NT - An
Overview - April 1992 ] However, PC Week has reported, "Many observers say that
the practical recommendation will probably end up closer to a 12Mb system.
Others predict even higher memory requirements." [PC Week - Windows and OS/2
Supplement - August 17,1992 - Page S/1. ] Gartner Group has also told its
customers it believes "a mainstream platform for Windows NT will be a 486DX
with 12 to 16 megabytes of RAM (and up) on the workstation." [Gartner Group -
Personal Computer Research Notes, P-230-853, July 31,1992 ]
Since Windows NT is not generally available, it is unclear how much memory will
be required to run a typical networked application.
ΓòÉΓòÉΓòÉ 4.1.2.2. Windows NT compatibility ΓòÉΓòÉΓòÉ
Windows NT will be a break with previous PC operating systems and may not offer
full compatibility with existing DOS or Windows applications.
In its July 27, 1992 review of Windows NT, PC Week stated, "Rather than provide
compatibility for all DOS and Windows applications, Microsoft Corp. officials
have stated their intentions to focus support on `major' DOS and Windows 3.1
applications." Paul Muglia, a director of Windows NT at Microsoft, was also
quoted, "We'll look at what are the top 100 Windows applications and the top
100 DOS applications, and focus more on those than on those that haven't sold
well." [PC Week, July 27, 1992 - Page 1 ]
In addition, the operating system design is processor independent and so if
code written for the Intel 16-bit processors is to run on other processors, a
software emulation of the underlying hardware may have to be provided. This
technology is familiar from the UNIX world. It enables a basic level of
compatibility but has a number of potential drawbacks:
o Performance
The software emulation of hardware processes may cause applications to run
slower
o Hardware dependent programs
These may often not run. In particular, many DOS device drivers may have to
be rewritten. This means that fax, scanner, file backup and even 3270
emulation programs may not run. Many software vendors will only undertake the
work of rewriting device drivers if they are assured of a significant
marketplace. The hardware requirements of Windows NT are likely to mean that
it will not be a mass-market product.
o Usability of DOS programs may also be compromised
Microsoft has acknowledged that, in the first release of Windows NT, DOS
programs using VGA (or higher mode) graphics will not be able to be windowed
onto the desktop. [PC Week - Windows and OS/2 Supplement - August 17, 1992 -
Page S/9 ] This is not a problem for OS/2. Microsoft's plans to support
clipboard and DDE for these DOS programs have also not been made clear.
Windows programs written for Windows 3.x are 16-bit programs and Microsoft
has stated that Windows NT will support these programs in a single Virtual
DOS machine (VDM). [Microsoft Windows NT Operating System - A Comparison with
OS/2 ] This means that if one program fails other Windows 16-bit programs may
fail - just as in Windows 3.1.
ΓòÉΓòÉΓòÉ 4.1.2.3. Windows/NT market positioning ΓòÉΓòÉΓòÉ
Windows NT may have a number of compatibility issues that could make it an
unacceptable option for many end-users. Add to this the projected higher cost
of the hardware needed to run NT and it's clear that Windows NT is unlikely to
become the client of choice for most people. Microsoft has also clearly
positioned Windows NT as more suitable for a server or high-end workstation
operating system. [Microsoft Operating Systems Directions - Presented by Dwayne
Walker at Spring Comdex 1992 ]
While Windows NT has many of the features that would make it an attractive base
as a server operating system, the reality is that changing a Network Operating
System is a difficult and expensive procedure. Most network managers would
choose to run with lower function rather than incur the risk and cost of
changing server software.
Because nearly three-quarters of the networks in the world use Novell products
that will not even run on Windows NT, it could take a long time for Windows NT
to gain any significant acceptance. In addition, it is not clear what effect
Microsoft's plans to bundle some basic networking functions with Windows NT
will have on other networking product vendor's inclinations to support the
platform.
OS/2 users will gain little if any benefit from moving to Windows NT because
OS/2 already offers the key features of multitasking and application
protection. In addition, Microsoft has stated that Windows NT will not run
OS/2 32-bit or OS/2 Presentation Manager programs.
Many RISC-based workstation users are using UNIX because the specialized
applications they need are written for UNIX. It is likely to be a large
migration job to re-write a UNIX program for Windows NT and, in the absence of
a large market acceptance, it is questionable whether software vendors will be
willing to make that investment. Some UNIX users have already expressed their
unwillingness to move to a new operating system that is inherently single-user
when they are used to the flexibility of the multi-user UNIX. Jay Kidd, a
director of marketing at Silicon Graphics (the manufacturer of the only
RISC-based workstation that Windows NT runs on today), has stated "UNIX, rather
than Windows NT, will continue to be the operating system of choice for those
who want the absolutely best performance and are willing to sacrifice
compatibility to get it." [Windows Magazine, October, 1992, Page 20 ]
In summary, Windows NT is at risk of becoming a high-technology white elephant.
If it cannot run existing programs and needs more powerful hardware than is
widely installed then it should have a limited market and remain an academic
solution to niche needs.
ΓòÉΓòÉΓòÉ 4.1.3. The Windows client-server strategy ΓòÉΓòÉΓòÉ
Microsoft has a two operating system strategy. Today, the company recommends
DOS and Windows for the client and OS/2 for the server. [Microsoft Windows
Strategy - An Overview - Page 5 ] When Windows NT is delivered, it says that
customers should migrate their OS/2 servers to Windows NT servers. IBM believes
that the reason Microsoft proposes two separate and different operating systems
for the client and server roles is because Microsoft does not offer a product
that provides the reliability and efficient multitasking for clients with more
limited hardware requirements. IBM proposes one operating system for both
these roles: OS/2. This reduces administration workload and training overhead
for support staff while making better use of software developers' skills.
The dominant system design of the 90's will be client-server. The flexibility,
development speed and cost advantages of this architecture increase the
requirements for systems and network management. A reliable client is a must
(why pay for fault-tolerant servers if the clients are not fault-tolerant?) but
true multitasking is also vital to enable effective and non-intrusive
management. OS/2 is an ideal client. LAN Server with OS/2 on the server
provides the highest performance server in the industry.
ΓòÉΓòÉΓòÉ 5. Windows Myths ΓòÉΓòÉΓòÉ
Some claims and beliefs about Windows have gained popularity. They often do not
stand up to closer examination.
ΓòÉΓòÉΓòÉ 5.1. Myth #1: The marketplace has chosen - Windows is the standard. ΓòÉΓòÉΓòÉ
Windows has been an impressive sales success with Microsoft claiming to have
shipped 10 million copies. However, the independent consultant groups,
Creative Strategies and IDC, estimate that only 55% or 30% (respectively) of
Windows licenses are in use. Windows magazine has also questioned Microsoft's
number and estimated the number of copies of Windows in real use at about 4.5
million. [Windows Magazine - October 1992 - Page 16 ] Any of these independent
estimates reveal 5% or less of the close to 100 million installed base of PCs
are using an installed copy of Windows, far from being a standard.
ΓòÉΓòÉΓòÉ 5.1.1. Myth #2: Everyone is using Windows applications. ΓòÉΓòÉΓòÉ
Many software vendors have invested a lot of money developing Windows
applications, and, as a result, much attention has been focused on these
products. However, in 1991, the Windows applications market was smaller than
the Macintosh applications market (according to the Software Publishers
Association). In the nine months to June 1992 there were never more than 5
Windows applications in the "Top 20" best selling applications [Data from
Romtec, Ingram-Micro, Software Unlimited, PC Connection ]
Personal Computer Magazine in May 1992 said "Companies that have invested a lot
of money in developing Windows applications are battling for a small share of
what is a small pie".
Users continue to use, and buy, the tried and trusted DOS applications making
compatibility with DOS applications a key requirement for any personal
operating system. That is one of the things that OS/2 excels at and this DOS
compatibility is one of the areas that should be of most concern to users
considering Windows NT in the future.
ΓòÉΓòÉΓòÉ 5.1.2. Myth #3: Windows is faster and leaner than OS/2 ΓòÉΓòÉΓòÉ
OS/2's design is optimized for multitasking, making OS/2 better than Windows in
most multitasking scenarios. What is not well known is that OS/2 can also
outperform DOS and Windows when running some DOS applications individually.
OS/2 has a superior file system that gives a significant performance advantage
to programs that do a lot of I/O for instance, database programs. Microsoft has
drawn considerable attention to the different minimum hardware requirements of
DOS/Windows and OS/2. However, Windows can run in more than one "mode". The
Windows mode with the smallest hardware requirements offers the fewest benefits
to users (more limited multitasking of DOS applications, for instance).
ΓòÉΓòÉΓòÉ 6. What Microsoft is saying about OS/2 2.0 ΓòÉΓòÉΓòÉ
Microsoft has published a number of documents that compare Windows 3.1 and
Windows NT to OS/2 2.0. Some of the titles include:
o "A Guide to Evaluating Microsoft Windows Operating System Version 3.1 for The
PC Desktop With Comparisons to OS/2 2.0"
o "Microsoft Windows NT Operating System - A Technical Comparison With OS/2
2.0"
o "Microsoft Windows or OS/2 2.0"
These documents from Microsoft contain many statements regarding OS/2 that are
incorrect or could mislead users. To help IBM's customers make a more informed
choice of operating systems, the following are clarifications to some of
Microsoft's statements:
o OS/2 will run on less than 2% of the Windows capable-machines, citing
Infocorp as their data source.
According to Microsoft's data, approximately 200 thousand (1.38% of 18
million) machines are capable of running OS/2. Microsoft's information is
obviously incorrect since there have been over 1 million copies of OS/2 2.0
shipped in the first 120 days of availability.
IDC has stated that at least 28% of the installed base of PCs are OS/2
capable. Almost 50% of machines shipping in 1992 and 66% of machines to be
shipped in 1993 are OS/2 capable signaling a trend in the marketplace. In
addition, OS/2 can run on many of today's notebook and laptop computers.
o OS/2 is not suitable as a network client because of the "relatively few
native desktop applications available."
OS/2, as the Integrating Platform, runs DOS, Windows and OS/2 applications.
No company has more experience and capability in networking than IBM. IBM
believes OS/2 is the industry's best desktop client for connecting to complex
enterprise networks. It is an ideal solution for mission-critical networked
applications.
o OS/2 has limited host connectivity based on the number of native
communications packages.
That is not correct. The OS/2 Communications Manager has a very
comprehensive set of host connectivity options and current DOS and Windows
based packages work on OS/2 as well.
o Windows has more development tools than OS/2
OS/2 has a full complement of more than 250 development tools, although
Windows has more native development tools. Many of today's leading edge tools
originated on OS/2 which is why OS/2 is the preferred development environment
for many vendors.
o The document "Microsoft (R) Windows NT (TM) Operating System - A Technical
Comparison with OS/2 (R) 2.0" consistently uses the present tense, "Windows
NT is... "Windows NT supports...", "Windows NT meets..."
Windows NT has not been shipped for general availability, therefore the use
of the present tense is inaccurate. The actual ship date of the first release
is not certain. In addition, Microsoft expressly does not guarantee that all
of the function that has been described as part of Windows NT will be
delivered in the first release.
o Microsoft states that OS/2 runs multiple DOS applications by starting a
Virtual DOS Machine or VDM. Microsoft goes on to say that this is a feature
of the 386 designed to support older Real Mode applications and that this
feature has been used for some time by a number of DOS extenders. The reader
might infer that this is a limitation or shortcoming in OS/2.
This misses the point and could be misleading. It is precisely because OS/2
uses the hardware isolation VDMs provide that OS/2 can offer superior crash
protection. Hardware protects each application in a VDM from taking down an
application or operating system in another VDM. Since Windows does not use
this feature, the Windows Unrecoverable Application Errors (UAE ) and General
Protection Faults (GPF - a UAE by another name) can and sometimes do crash
the operating system and other applications.
OS/2 also provides support for more DOS applications than is planned for
Windows NT. Microsoft has confirmed that Windows NT will have limited support
of DOS applications because it does not plan to support the v86 mode of the
hardware the same way that OS/2 does. PC Week reported that many programs
that support fAX, scanner, MIDI, terminal emulator and LAN cards (that today
run under OS/2 2.0) will not run unmodified on Windows NT. In addition, DOS
programs that support VGA or higher graphics will not run in a window on the
Windows NT desktop. [PC Week, July 27, 1992 - Page 1 ]
o The new OS/2 Workplace Shell is difficult to use. Having Windows applications
running on the OS/2 desktop will confuse users and drive up support costs.
This argument is very difficult to understand, especially in our industry
where new innovations are constantly bringing better products to consumers.
The Workplace Shell represents a second generation of graphical user
interface and is a major advance over the Windows and previous OS/2
interfaces. These older generation interfaces basically put a pictorial face
on the menus of OS/2 1.x and Windows 2.0. Instead of working with operating
systems constructs like File Managers and Program managers, you work with a
desktop with pictures (icons) of familiar things such as letters, folders
and appointment books. Instead of working with directories, paths and print
commands, you just pick up the picture of the letter and put it on the
printer. OS/2 also allows users to preserve the command prompt or menu
interface. IBM's OS/2 gives you the choice.
Microsoft has also recently demonstrated a future (1994) Windows NT user
interface, codenamed "Cairo", that adds object oriented functions to Windows
NT which bears a resemblance to the OS/2 Workplace Shell.
o OS/2 2.0 does not run Windows 3.1 applications, which leads to deficiencies
in that it will not use True Type(R) fonts, has limited networking support,
performance and reliability.
Support of Windows 3.1 applications in OS/2 2.0 has been demonstrated at
various trade shows and is now in beta test with customers. IBM intends to
make the Windows 3.1 application support generally available near the end of
1992.
With respect to TrueType fonts, OS/2 2.0 offers built-in Adobe Type Manager
(ATM) font technology for both OS/2 and Windows modes. Adobe is widely used
in the industry while TrueType is still proprietary. In addition, there are
thousands more fonts available for Adobe than TrueType. TrueType support for
Windows 3.1 applications will also be included in OS/2 in the near future.
OS/2 currently provides more networking options than does any generally
available version of Windows, and OS/2's reliability and performance when
performing many simultaneous tasks are hard to match. Several vendors, such
as Novell, have networking products available for OS/2 2.0 today, with more
coming from other vendors. In addition, OS/2 can run many DOS-based LAN
products in its DOS sessions.
With OS/2's entry-level hardware requirements and its superior communications
extensions, both from IBM and other vendors, OS/2 is ideally suited for both
the client and server ends of communications, thus keeping all systems
consistent and homogeneous.
o The installation of OS/2 2.0 can be difficult
Installing 15 to 20 diskettes can seem complex at first, but OS/2 does an
admirable job of making it easy and of migrating existing applications. The
installation process can even be accomplished across a local area network or
eliminated entirely by choosing OS/2's remote IPL capability. In addition,
many new systems are pre-loaded with OS/2 and a CD-ROM version is planned for
availability soon.
o OS/2 2.0 offers limited reliability when running multiple Windows
applications in the same session.
Actually, OS/2 has a big advantage over Windows 3.1 when it comes to
reliability. Under Windows, an errant application can disable other
applications or even Windows itself. OS/2 provides protection which can
prevent a failing application from bringing down another or the whole system.
Under OS/2 2.0, if a user runs several Windows applications in the same
session and two or more conflict, the user can simply specify them to run in
separate sessions to protect one from harming the other. Of course this may
use more memory, but the gain is the reliability that Windows 3.1 does not
offer.
o Applications running in separate OS/2 sessions do not function properly.
This is incorrect. Windows applications function just fine when run together
in the same OS/2 session or in different sessions. This includes applications
that use the clipboard, NETBIOS, Dynamic Data Exchange (DDE), Named Pipes or
Object Linking and Embedding (OLE).
o Data exchange of graphics between Windows and Presentation Manager
applications does not work.
This too is incorrect. Dynamic Data Exchange (DDE) and the clipboard
functions work fine for graphics.
o OS/2 2.0 has limited video support in that a WIN-OS2 window will only run in
VGA graphics mode.
In the initial shipment of OS/2 2.0, this is true. However, there are SVGA
board makers who have already produced WIN-OS2 window (seamless window)
drivers for their SVGA boards and IBM's 32-bit XGA and SVGA high-resolution
seamless drivers are also available in the market.
o Configuring OS/2 2.0 is difficult because users must configure both the OS/2
and the Windows side of things.
Some users may want to customize the configuration of their Windows
applications but OS/2 is generally self-configuring. Once the user installs
fonts and other tools, it runs seamlessly.
o NT will be better in its support of 16-bit Windows applications. NT will run
these applications in one address space with parameter validation.
We disagree that this provides better protection. In contrast, it should
provide no more protection than the current Windows version and still far
less than OS/2 2.0.
Since the applications will only run in one address space, they can still
conflict with each other. The parameter validation in Windows 3.1 simply
gives users a little more information on what went wrong. Windows can have
difficulty recovering from such a situation and users may still have to
reboot their system when a General Protection Fault (UAE) occurs. There is no
advantage in this.
When a Windows application fails under OS/2, one only need stop and restart
the failed session. There is no reason to reboot the entire system.
Additionally users have the advantage of running the applications in separate
sessions to avoid conflicting with another application.
o NT is more of an "Advanced Operating System" than OS/2 2.0
This is a very subjective statement! Both NT and OS/2 2.0 are pre-emptive,
multithreaded, prioritized multitasking systems and ONLY OS/2 IS A FULL
PRODUCT IN THE MARKETPLACE TODAY.
Continue on the next page of this chapter.
ΓòÉΓòÉΓòÉ 7. What Microsoft is saying about OS/2 2.0 (continued) ΓòÉΓòÉΓòÉ
o OS/2 falls short because it does not have a full 32-bit architecture.
In the current release of OS/2 2.0, the operating system code contains a
mixture of 16- and 32-bit code. Due to the native support for DOS and Windows
applications, 16-bit code must be present. The APIs provided however are full
32-bit implementations. This allows developers to write full 32-bit native
applications and have total compatibility with OS/2 2.0 as more of the
internal subsystems are migrated to 32-bit. In particular, a 32-bit graphics
engine which will offer improvements in performance, function and stability
is already in beta test. IBM's intentions are to deliver this new graphics
engine to end-users later in 1992.
o Presentation Manager runs in a shared address space with its applications and
thus cannot protect itself.
Presentation Manager does not really "run", it is a set of routines that
provide functions to applications which run in their own address space. A
failing PM application will only hurt itself, not PM or any other program.
PM and the rest of the operating system code remain intact.
o OS/2 cannot support symmetric multiprocessing machines.
It is true that OS/2 does not yet support symmetric multiprocessing, but very
few people have true SMP machines today. What some customers have today are
systems that support multiple processors (MP) and IBM plans to ship, in the
near future, an extension of the LAN Server (LS) that will support up to five
loosely coupled processors. This LS/MP extension will support IBM's new PS/2
Model 295.
It is IBM's intention to also support multi-threaded SMP applications in the
future.
o OS/2 falls short because, as a mixed 16/32-bit system, it cannot be ported to
RISC processors.
This is incorrect. It is part of IBM's strategy to port OS/2 to the RISC
platform and maintain compatibility with existing OS/2 32-bit applications.
Only sections of OS/2 required to maintain compatibility with existing 16-bit
DOS and Windows applications will remain 16-bit.
o OS/2 does not have a desynchronized input model.
OS/2 has a mechanism to interrupt "ill-behaved" applications that might "hog"
the message queue and inhibit user input. Most OS/2 applications are written
so that this is not a problem.
With OS/2's modular design, a desynchronized message queue can be implemented
as a replacement subsystem and added to the system in the future.
o OS/2 falls short because it has limited asynchronous I/O.
OS/2 has full support for asynchronous I/O and with its enhanced FAT and HPFS
file systems, along with device drivers for communications and other
peripheral ports, it is a very powerful and efficient system for synchronous
and asynchronous I/O.
o OS/2 support for Windows apps is more limited in that it runs modified
Windows 3.0, not 3.1 and will not run 32-bit Windows apps. These are
shortcomings given the size of the installed base of Windows
First, there are no 32-bit Windows (Win32) applications today. OS/2 can add
this support if there is demand for it. As stated earlier, OS/2 has been
demonstrated running Windows 3.1 applications. The code is in beta test now
and is planned for availability before the end of 1992.
Finally, there is a fairly large Windows application install base and OS/2
2.0 runs virtually all of those Windows applications today.
o There are only about 300 graphical applications for OS/2 available.
Since OS/2 can run all the OS/2 and the majority of the DOS and Windows
applications, most of the 6500 Windows applications should be added to the
list of what OS/2 will run.
While these applications were not written to take advantage of OS/2's native
protected mode, they will run well under OS/2 nonetheless. Windows 3.1
cannot run a number of these applications without changes. In addition,
Microsoft has published a compatibility list describing more than 30
applications written for Windows 3.0 that will not function properly on
Windows 3.1 but run on OS/2 2.0.
Following Microsoft's logic, Windows NT will be in the same situation as
OS/2, in that the 6500 Windows and thousands of DOS applications were not
written for its native mode. Microsoft has also stated recently that it will
only focus on support efforts on "major" DOS and Windows 3.1 applications for
Windows NT. [PC Week - July 27, 1992 - Page 1 ]
o There are significant advantages to coding for the Win32 subset (Win32s)
functions, to have code that runs and is portable up to Windows NT once
Windows NT ships.
While this may appear to be a sound technical idea, there are some severe
shortcomings in this approach.
Applications coded only to the Win32s API will not exploit many advanced
operating system features (multi-threading, preemptive multitasking, etc) on
either Windows 3.1 or Windows NT. On the other hand, applications coded only
to the full Win32 API may not run on Windows 3.1 at all.
Essentially, the Microsoft strategy forces developers to make a choice:
- Sub-optimize either the Windows 3.1 clients or the Windows NT servers
...or...
- Maintain separate source libraries for each, significantly increasing
development costs.
OS/2, however, has a single, consistent 32-bit API for developers to build
both client and server applications.
o OS/2's scheduler will not preempt a time slice once it has been started while
Windows NT will, leading one to conclude that OS /2 is less efficient for
time-critical applications.
OS/2 is ideal for time-critical applications, and indeed, is being used in
many sites today to control plant floors, loading docks and medical
equipment. OS/2 was also used at the 1992 Summer Olympic Games to control
data and has been used to gather and report real-time data at the
Indianapolis 500 car race for several years now.
o Windows NT will support 2 gigabytes of address space per application while
OS/2 2.0 ONLY supports 512MB.
OS/2's architectural limit per application is 4 gigabytes, the current
implementation is 512Mb. Today, there are very few applications that come
anywhere near 512Mb of memory and very few computers that even have 100Mb of
real memory. [Remember: the virtual memory limit for ANY system is it's real
(physical) memory plus all free disk space. ]
o Windows developers cannot leverage the investments made in their
Windows-based programs in OS/2.
In OS/2, Windows developers can gain great benefits and leverage their
investments in Windows code in several ways:
1. Users can continue to run their Windows applications under OS/2 while
developers work on OS/2 versions. OS/2 2.0 can run the majority of the
Windows applications that Windows 3.1 does not.
2. Windows and OS/2 have a number of things in common. Many of the
programming interfaces are similar and in many cases, the structures and
APIs are virtually interchangeable. If a user understands Windows
programming, he will understand OS/2's Presentation Manager. Dealing
with multitasking and multiple threads is something he would have to
learn for Windows NT and OS/2 2.0.
3. There are porting tools available today, for the initial port from
Windows code to OS/2. Many large applications can be ported in an hour
or two. Then developers can begin to optimize the code for OS/2's
advanced features.
Once application code runs on OS/2, it has been able to run on future
versions of OS/2. IBM has been able to maintain this commitment to
protect customer investment in applications since version OS/2 version
1.0. Microsoft has forced developers to upgrade code with virtually
every revision of Windows. Microsoft has already published a document on
porting Windows 16 bit applications to the Windows 32 bit APIs.
o Windows NT can share printers and OS/2 cannot.
OS/2 can share printers with any of several network products available. It
appears that Windows NT will have some networking features built into the
base system. This can have advantages and disadvantages.
The advantage is that users will not have to purchase extra network products
to use the most basic of networking functions.
The disadvantage is that users who do not want network functions are bogged
down with the extra disk and RAM required to keep this code around. This may
also limit compatibility with other vendors' networking offerings.
ΓòÉΓòÉΓòÉ 8. OS/2 2.0 offers it all... TODAY. ΓòÉΓòÉΓòÉ
OS/2 2.0 is a fully preemptive, prioritized, multitasking, multithreaded
operating system with a superior object-oriented graphical interface,
networking and host connectivity support along with compatibility with most
other software written for Intel based PCs and compatibles, and best of all,
it's available today.
The prioritized, preemptive multitasking of OS/2 utilizes the processor more
efficiently than Windows 3.x. The connectivity support along with its
entry-level hardware requirements make it an ideal platform for both client and
server computing.
OS/2 2.0 provides:
o 32 bit virtual memory, allowing applications up to 512 megabytes per
application, limited only by the size of the user's hard disk.
o Multitasking support, allowing many applications to run simultaneously with
excellent performance.
o Multithreading to allow those applications wishing to perform many
simultaneous tasks to do so.
o An easy-to-use and easy-to-program context-sensitive online help system.
o Protection among applications and protection to enhance operating system
integrity. Users have the option of running applications in separate
sessions, or combining them as resources and the situation dictate, while the
operating system is protected from errant code.
o Extendable subsystems, allowing programmers to add new system services and
create custom, enterprise-wide applications while remaining flexible for the
small company or home user.
o International language support (currently 17 languages) including
bidirectional languages for Hebrew and Arabic.
o A state-of-the-art, object-oriented user shell that integrates applications
with the shell, providing consistent interfaces across the entire system.
o Compatibility. OS/2 will run:
- 16-bit and 32-bit OS/2 applications
- Most DOS applications
- Most Windows 3.0 and Windows 2.0 applications; and Windows 3.1
applications soon
- Connectivity with various network systems along with host environments
OS/2 2.0's compatibility with applications written for previous versions of
OS/2, DOS and Windows is unsurpassed. Even Windows 3.1 will not run a number of
applications written for Windows 3.0, forcing developers to update their code
and users to purchase upgrades. OS/2 will run many of these applications,
preserving users software investments.
OS/2's programming interface has not changed from earlier versions. With any
new functions that have been added, only minor changes are needed to source
code to recompile on OS/2 2.0, and programs that ran on a previous version of
OS/2 will run on OS/2 2.0 unchanged. The only need to recode for any upgrade of
OS/2 is to take advantage of new features, again preserving programming
investments.
IBM Multimedia Presentation Manager/2 (MMPM/2) has been released to provide
multimedia capabilities for OS/2 systems for sound, CD-ROM and MIDI support as
well as advanced graphics.
Many applications have already taken advantage of OS/2's powerful multitasking
and multithreaded features in their 16-bit versions. Vendors such as Lotus,
Describe, Aldus and Novell have 16-bit OS/2 applications. 32-bit applications
will, in most cases, run even better and faster due to OS/2's new 32-bit flat
memory model along with its other features. There are more than 200 32-bit
applications available now and more than 1000 software vendors have committed
to delivering 32-bit OS/2 applications in 1992.
OS/2 2.0 offers users and developers alike powerful multitasking features, with
limitless possibilities for the future. Best of all, OS/2 2.0 is available on
the desktop today.
ΓòÉΓòÉΓòÉ 9. Appendices ΓòÉΓòÉΓòÉ
ΓòÉΓòÉΓòÉ 10. OS/2 2.0 compared to Windows 3.1 and Windows NT ΓòÉΓòÉΓòÉ
The following charts compare key operating system features for Windows 3.1,
Windows NT and OS/2 2.0. Some of the entries under Windows NT are marked with
an asterisk, "*". This is because Windows NT is a not generally available and
therefore IBM does not have the current specifications for all items. For the
same reason, the data on Windows NT may change at any time.
ΓöîΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÉ
Γöé OS/2 2.0 compared to Windows 3.1 and Windows NT Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö¼ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö¼ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö¼ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé Γöé WINDOWS 3.1 Γöé WINDOWS NT Γöé OS/2 2.0 Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé AVAILABLE Γöé Today Γöé * Γöé Today Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé PRICE (LOW - HIGH) Γöé $49 - $149 Γöé $400 - $500 Γöé $79 - $149 Γöé
Γöé Γöé Γöé (estimate) Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö┤ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö┤ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö┤ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé Applications Base Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö¼ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö¼ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö¼ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé DOS APPLICATIONS Γöé 30,000+ Γöé * Γöé 30,000+ Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé WINDOWS APPLICATIONS Γöé 5,000+ Γöé * Γöé 5,000+ Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé 16-BIT OS/2 APPLICATIONS Γöé 0 Γöé * Γöé 2,500+ Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé 32-BIT OS/2 APPLICATIONS Γöé 0 Γöé * Γöé 600 Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé --- TOTAL --- Γöé 35,000+ Γöé * Γöé 38,000+ Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö┤ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö┤ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö┤ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé Hardware Γöé
ΓööΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÿ
ΓöîΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÉ
Γöé OS/2 2.0 compared to Windows 3.1 and Windows NT Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö¼ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö¼ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö¼ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé Γöé WINDOWS 3.1 Γöé WINDOWS NT Γöé OS/2 2.0 Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé PROCESSOR Γöé 286 and higher Γöé 386DX (33Mhz) Γöé 386SX (16 Mhz) Γöé
│ │ √ │ and higher │ and higher │
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé MINIMUM RAM Γöé 2 MB Γöé 8 MB Γöé 4 MB Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé RECOMMENDED RAM Γöé 4 - 6 MB Γöé 12 - 16 MB Γöé 6 - 8 MB Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé MINIMUM HARD DRIVE Γöé 9 MB Γöé 40 MB Γöé 13 MB Γöé
Γöé (APPROXIMATELY) Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
│ HARD DRIVE FOR FULL │ 11 MB + ¤ │ 100 MB № │ 28 MB │
Γöé INSTALL (APPROXIMATELY) Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé LARGEST HARD DRIVE Γöé 1 GB Γöé 17 Billion GB Γöé 64 GB (HPFS) Γöé
Γöé Γöé Γöé (NTFS) Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé LARGEST FILE SIZE Γöé 1 GB Γöé * Γöé 2 GB Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé SCSI EXPLOITATION Γöé No Γöé Yes Γöé Yes Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé FILE SYSTEM OPTIONS Γöé FAT only Γöé FAT, HPFS, NTFS Γöé Enhanced FAT or Γöé
Γöé Γöé Γöé Γöé HPFS Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö┤ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö┤ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö┤ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé Memory Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö¼ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö¼ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö¼ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé VIRTUAL MEMORY LIMIT Γöé 4 x Physical Γöé 2 GB per Γöé 512 MB per Γöé
Γöé Γöé Memory Γöé process Γöé process Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé MEMORY MODEL Γöé Segmented (64 Γöé Flat memory Γöé Flat memory Γöé
Γöé Γöé KB) Γöé objects Γöé objects Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö┤ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö┤ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö┤ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé Multi-tasking Γöé
ΓööΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÿ
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ΓòÉΓòÉΓòÉ 11. OS/2 2.0 compared to Windows 3.1 and Windows NT (continued) ΓòÉΓòÉΓòÉ
ΓöîΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÉ
Γöé OS/2 2.0 compared to Windows 3.1 and Windows NT Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö¼ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö¼ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö¼ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé Γöé WINDOWS 3.1 Γöé WINDOWS NT Γöé OS/2 2.0 Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö╝ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé MULTI-TASKING - DOS Γöé Time Slicing Γöé Preemptive Time Γöé Preemptive Time Γöé
Γöé APPLICATIONS Γöé Γöé Slicing Γöé Slicing Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé MULTI-TASKING - Γöé Co-operative Γöé Preemptive Γöé Preemptive Γöé
Γöé WINDOWS/PM APPS Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé PRIORITY Γöé Static (set by Γöé Dynamic Γöé Dynamic Γöé
Γöé Γöé user) Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé DISPATCHABILITY Γöé Process Γöé Thread Γöé Thread Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé SYSTEM SERVICES Γöé Serial Γöé Parallel/OverlapΓöéeParallel/OverlapΓöéed
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé Reliability/Protection Γöé
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Γöé PROTECTION BETWEEN Γöé Limited Γöé Some Γòò Γöé Yes Γöé
Γöé APPLICATIONS Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé KERNEL PROTECTION Γöé Limited Γöé Yes Γöé Yes Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé REMAINS IN PROTECT MODE Γöé No - access to Γöé Yes Γöé Yes Γöé
Γöé Γöé real mode pos- Γöé Γöé Γöé
Γöé Γöé sible Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé Application Compatibility Γöé
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ΓöîΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÉ
Γöé OS/2 2.0 compared to Windows 3.1 and Windows NT Γöé
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Γöé Γöé WINDOWS 3.1 Γöé WINDOWS NT Γöé OS/2 2.0 Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé MULTIPLE CONCURRENT DOS Γöé Yes (enhanced Γöé Some Γòú Γöé Yes Γöé
Γöé APPLICATIONS Γöé mode only) Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé WINDOWS 2.X APPLICATIONS Γöé No Γöé No Γöé Yes Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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│ WINDOWS 3.0 APPLICATIONS │ Most ц │ Some ╣ │ Most │
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé WINDOWS 32 BIT APPLICA- Γöé Some Γöé Yes Γöé No (Possible Γöé
Γöé TIONS Γöé Γöé Γöé Future) Γöé
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Γöé CLIPBOARD SUPPORT Γöé Windows and DOS Γöé Windows and DOS Γöé Windows, DOS Γöé
Γöé Γöé only Γöé only Γöé and OS/2 Γöé
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Γöé Γöé Γöé Γöé Γöé
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Γöé DDE SUPPORT Γöé Windows apps Γöé Windows apps Γöé Windows and Γöé
Γöé Γöé only Γöé only Γöé OS/2 apps Γöé
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Γöé Γöé Γöé Γöé Γöé
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Γöé OLE SUPPORT Γöé Yes Γöé Yes Γöé Yes Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé 16-BIT OS/2 APPLICATIONS Γöé No Γöé Partial (char Γöé Yes Γöé
Γöé Γöé Γöé mode only) Γöé Γöé
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Γöé Γöé Γöé Γöé Γöé
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Γöé 32-BIT OS/2 APPLICATIONS Γöé No Γöé No (Possible Γöé Yes Γöé
Γöé Γöé Γöé Future) Γöé Γöé
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Γöé Printing and Fonts Γöé
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ΓöîΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÉ
Γöé OS/2 2.0 compared to Windows 3.1 and Windows NT Γöé
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Γöé Γöé WINDOWS 3.1 Γöé WINDOWS NT Γöé OS/2 2.0 Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé PRINT SPOOLING Γöé Limited Γòù Γöé Yes Γöé Yes Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé ADOBE TYPE MANAGER Γöé No Γöé No Γöé Yes Γöé
Γöé STANDARD Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé NETWORK PRINTING SUPPORT Γöé Some Γöé Yes Γöé Yes Γò¥ Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé BACKGROUND PRINTING PER- Γöé Unpredictable Γöé * Γöé Predictable Γöé
Γöé FORMANCE Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
ΓööΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö┤ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö┤ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö┤ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÿ
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ΓòÉΓòÉΓòÉ 12. OS/2 2.0 compared to Windows 3.1 and Windows NT (continued) ΓòÉΓòÉΓòÉ
ΓöîΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÉ
Γöé OS/2 2.0 compared to Windows 3.1 and Windows NT Γöé
Γö£ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö¼ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö¼ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö¼ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöñ
Γöé Γöé WINDOWS 3.1 Γöé WINDOWS NT Γöé OS/2 2.0 Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé National Language Support Γöé
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Γöé NUMBER OF LANGUAGE VER- Γöé 12 Γöé * Γöé 17 Γöé
Γöé SIONS Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé DATA INTERCHANGE Γöé ISO8859/CP819 Γöé * Γöé CP850 (con- Γöé
Γöé Γöé (different from Γöé Γöé sistent Γöé
Γöé Γöé DOS) Γöé Γöé throughout Γöé
Γöé Γöé Γöé Γöé OS/2) Γöé
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Γöé HOST Γöé 3rd party Γöé 3rd party Γöé Included in Γöé
Γöé CONNECTIVITY/INTERCHANGE Γöé Γöé Γöé Extended Ser- Γöé
Γöé Γöé Γöé Γöé vices for OS/2 Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé CODE PAGE Γöé Single Γöé Unicode Γöé Selectable Γöé
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Γöé Γöé Γöé Γöé Γöé
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Γöé Other Factors Γöé
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Γöé FULL 32-BIT APIS Γöé No Γöé Yes Γöé Yes Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé Γöé Γöé Γöé Γöé
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Γöé CONCURRENT HIGH SPEED Γöé Unreliable Γöé * Γöé Yes Γöé
Γöé COMMS Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé BACKGROUND COMMS Γöé Unreliable Γöé * Γöé Yes Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé OEM HARDWARE SUPPORT Γöé Yes Γöé Some Γò£ Γöé Yes Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé DEVELOPMENT TOOLS Γöé Yes Γöé Yes Γöé Yes Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé COMMAND LANGUAGE Γöé .BAT Γöé .BAT, Basic Γöé .BAT, .CMD and Γöé
Γöé Γöé Γöé Γöé REXX Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé FOR EXISTING APPS Γöé Γöé Γöé Γöé
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Γöé OS/2 2.0 compared to Windows 3.1 and Windows NT Γöé
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Γöé User Interface Γöé
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Γöé CUA COMPLIANCE Γöé Graphical Model Γöé Graphical Model Γöé Workplace Model Γöé
Γöé Γöé ('89) Γöé ('89) Γöé ('91) Γöé
Γöé Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé ICONS REPRESENTING Γöé No Γöé No Γöé Yes Γöé
Γöé NON-LOADED FILES ON Γöé Γöé Γöé Γöé
Γöé DESKTOP Γöé Γöé Γöé Γöé
Γöé Γöé Γöé Γöé Γöé
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│ PLACE ICONS ANYWHERE ON │ No √╡ │ No √╡ │ Yes │
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Γöé GROUP WINDOWS Γöé Single-layer Γöé Single-layer Γöé Multi-layer, Γöé
Γöé Γöé only Γöé only Γöé hierarchical Γöé
Γöé Γöé Γöé Γöé folders Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé Γöé Γöé Γöé Shell, Windows Γöé
Γöé Γöé Γöé Γöé 3.x, OS/2 1.x) Γöé
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Γöé CONTEXT MENUS Γöé No Γöé No Γöé Yes Γöé
Γöé Γöé Γöé Γöé Γöé
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Γöé Γöé Γöé Γöé Γöé
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Γöé Γöé Γöé Γöé Γöé
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Γöé GRAPHICAL INSTALL Γöé Yes Γöé Yes Γöé Yes Γöé
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Γöé INTELLIGENT FONTS Γöé Windows 3.1 - Γöé Same as Windows Γöé Yes (Adobe Type Γöé
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ΓòÉΓòÉΓòÉ 13. OS/2 2.0 compared to Windows 3.1 and Windows NT (continued) ΓòÉΓòÉΓòÉ
ΓöîΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö¼ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö¼ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓö¼ΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÇΓöÉ
Γöé COMMAND REFERENCE Γöé No Γöé * Γöé Yes Γöé
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│ Advanced Connectivity √√ │
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│ CLIENT AND SERVER PLAT- │ No │ No √¤ │ Yes │
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Γöé SYSTEMS MANAGEMENT Γöé 3rd party Γöé LAN Man NT Γöé Various from Γöé
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Γöé SQL SERVER Γöé MS SQL Server Γöé SQL Server NT Γöé OS/2 Database Γöé
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1. Although Windows 3.1 will run on a 286, doing so limits the features
available to the user (multitasking DOS applications, demand paging, 32 bit
support.)
2. An additional 50% of the remaining partition is used for the swap file.
This is the default.
3. This includes a mandatory 20 MB swap file
4. Windows NT runs existing Windows 16-bit applications in a single address
space. If one of these applications goes down, all of the applications in
the address space could go down as well.
5. Windows NT has been shown to have compatibility problems with some classes
of DOS and Windows applications. See PC Week, July 27, 1992.
6. Windows 3.1 will not run some Windows 3.0 applications, which will need
updates. Compatibility notes are listed in the APPS.HLP file. Several
Windows 3.0 applications need updated versions to run on Windows 3.1. OS/2
2.0 runs virtually all Windows 3.0 applications, as well as all the Windows
2.x applications that Windows 3.1 will no longer support (no Real Mode
support provided)
7. Print spooling is not provided by Windows 3.1 for DOS applications, only
for Windows applications. OS/2 2.0 provides print spooling for DOS, Windows
and OS/2 applications. OS/2 2.0 has extensive user print management
capabilities (40 APIs vs 12 APIs in Windows 3.1) for querying, holding,
releasing and deleting jobs (including a graphical view of job and queue
status).
8. OS/2 has been shown to outperform Windows 3.x with background print
operations, in multitasking environments
9. Early feedback on Compuserve of the pre-beta SDK is indicates that 386
processors with a B0 or B1 stepping are incompatible with Windows NT.
Several common BIOS chips have also been found to be incompatible.
10. In Windows, files only exist in the File Manager, programs in Program
Manager, etc. There are no icons for printers.
11. OS/2 2.0's 'Yes' answers here are all using Extended Services for OS/2
except where stated. It is important to note that the Windows column
refers to Windows specific programs (i.e. written to explicitly take
advantage of Windows GUI, memory addressability, or time-slicing).
Although there are many DOS connectivity options, and they may be usable
under Windows, the integration of these complex subsystems and any
co-residency of two or more options (eg TCP/IP and SNA) is completely the
responsibility of the customer as a custom integration effort.
Moreover, Windows on DOS has architectural limitations (less memory, less
protection, and less multitasking support) which make multiple network
connections more difficult to integrate than under OS/2. OS/2's base
environment provides tools and system support designed to allow this type
of multi-connectivity installation. Besides, all the extra software
required for these functions under OS/2 comes from IBM, and one can
therefore anticipate a greater degree of integration.
12. The projected system requirements for Windows NT may be too large for many
of today's client machines.
ΓòÉΓòÉΓòÉ 14. Windows 3.1 Application Incompatibilities ΓòÉΓòÉΓòÉ
When a vendor ships new software, minor incompatibilities often accompany the
new function. Windows 3.1, for example, has problems running dozens of Windows
3.0 applications, including Microsoft applications. Support for Windows 2.x
applications has been removed entirely.
OS/2 2.0 will run Windows 2.0 and 3.0 applications concurrently. It will also
run nearly all of the 30+ Windows 3.0 applications that Microsoft warns will
not run properly under windows 3.1 and would require upgrades or fixes: [PC
Week, March 23, 1992. The article says that these products were taken directly
from the Win 3.1 on-line help system. ]
These include:
o Ace Software AceFile
o Adobe Illustrator
o Adobe TypeAlign
o Aldus FreeHand 3.0
o Aldus Persuasion
o Bitstream FaceLift 1.2
o Borland C 3.0 WInsight
o Campbell Services OnTime 1.0
o Central Point Software PC Tools
o Channel Computing Forest and Trees 2.0a
o Claris Hollywood
o Coda Finale
o Computer Support Arts & Letters
o Software Publishing Harvard Graphics for Windows
o Computer Support Picture Wizard
o First Byte Monologue for Windows
o hDC First Apps Memory Viewer 1.0
o Hewlett-Packard NewWave
o Lotus Ami Pro
o Microsoft Bookshelf for Windows
o Microsoft PowerPoint 2.0e
o Microsoft Productivity Pack 1.0
o Microsoft Word for Windows 1.1
o PowerSoft Powerbuilder 1.0
o SofNet FAXit for Windows
o PFS:WindowsWorks
o NBI Legacy
o Norton Desktop 1.0
o (ALL Windows 2.x applications)