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- OS/2 2.0: A house built on rock
-
- by Gene Wilburn
-
- Copyright 1992 Gene Wilburn
-
- [A slightly trimmed version of this article was published in Computing
- Canada, April 13, 1992, p.13, as "OS/2 2.0 Worth the Wait"]
-
- The most curious and bothersome aspect of the PC industry is that it
- lacks a foundation--a fundamentally sound operating system. It is a house
- built on sand.
-
- MS-DOS continues to bedevil the industry with its 640Kb barrier, lack
- of process protection, and single-threaded, single-application design.
- DOS extenders such as DesqView and Windows are kludges--attempts to
- retrofit DOS with improved functionality. But one TSR conflict, one
- inappropriately masked interrupt, and the whole edifice collapses. Re-
- boot time.
-
- Users with high-performance PCs deserve something more sophisticated.
- It is absurd to need "stealth" technology to squeeze an extra kilobyte of
- device driver into the DOS UMB attic while megabytes of RAM go
- unused.
-
- No one loves DOS. What we love are our DOS and Windows
- applications. What if we could take all the applications we know and love
- and start over, on a new operating system? A modern 32-bit operating
- system with preemptive multi-tasking, multi-threading, demand paging,
- virtual memory, flat memory addressing, and protected sessions?
-
- That is exactly the choice that lies before us. OS/2 2.0 is here, it's real,
- and it has the potential to fundamentally alter the face of the PC
- industry. IBM has delivered an advanced PC operating system that is
- going to force us to re-evaluate what PC computing is, what it should be,
- and what we want from it.
-
- In a move that is nothing short of brilliant, IBM has made OS/2 2.0 a
- backwardly compatible operating system. While their advertising slogan--
- "a better Windows than Windows, a better DOS than DOS"--encapsulates
- the concept, I prefer IBM's other, more subdued description--"the
- integration platform". OS/2 2.0 is the only product available that can run
- software written for Windows 3.X, MS-DOS, OS/2 1.X, and OS/2 2.0.
- It can run them all at the same time--each in a separate, protected,
- session.
-
- I was skeptical about these claims until I installed OS/2 on an no-name
- 486 and found myself simultaneously writing in Word for Windows,
- consulting a DOS-based GrandView outline, downloading a file in
- ProComm Plus in a DOS background session, checking user logins on
- a remote Unix system over a TCP/IP network, and periodically
- inspecting an OS/2 system usage utility. The download never burped.
- Everything ran smoothly.
-
- After several weeks of operating OS/2 on my home and work PCs, I'm
- impressed by its solidity, usefulness, and design elegance. Experience
- with OS/2 changes your perceptions about PC computing.
-
- With OS/2 you can carve out the kind of computing you and your users
- want, mixing together any combination of existing DOS and Windows
- applications. You can gradually add native OS/2 programs and drivers
- for networking, CD-ROMs, scanners, and multimedia equipment and
- never again have to worry about stealing critical memory from
- applications.
-
- For large disk drives, OS/2 offers its HPFS (high performance file
- system) as an alternative to the antiquated DOS FAT file system. HPFS
- supplies better buffering, a more optimized structure, and freedom from
- the DOS "8.3" naming convention. HPFS file names can be up to 254
- characters long and can include spaces. OS/2 also resides comfortably in
- a FAT file system, maintaining its backward compatibility with DOS
- partitions.
-
- OS/2's flat, 32-bit memory addressing opens the door to impressive
- software possibilities--everything from the old to the new. Mainframe
- COBOL applications can be brought to the desktop. CAD and graphics
- programs that rival the performance of Unix workstations can be
- developed for OS/2. The large addressing space is a natural fit for
- distributed corporate database modules. The multi-threaded architecture
- will give a strong boost to multimedia applications.
-
- From a planning point of view, OS/2 provides stability of direction.
- Future releases of OS/2 2.X will be ported to multi-processor hardware
- and to RISC architectures. Security features will be scaled up with each
- release. The object-oriented user interface, Workplace Shell, provides a
- better long-term desktop metaphor than Windows.
-
- On the downside, OS/2 is not for meek systems. In addition to a 386 or
- 486 processor, it requires 30Mb of hard disk for a complete installation,
- plus a minimum of 4Mb RAM. Realistically, make that 8Mb. At least
- Windows has softened us up for these requirements. In comparison,
- Word for Windows 2.0 requires 15Mb for a full installation, and it's just
- a word processor.
-
- It is impossible to discuss OS/2 2.0 without discussing Windows 3.1.
- IBM and Microsoft are both launching massive advertising campaigns to
- promote the products. Comparing the two is difficult simply because
- there is no direct comparison. OS/2 can only be directly compared with
- Windows NT, Microsoft's OS/2 3.0 project, renamed after Microsoft
- dropped out of the OS/2 2.0 effort. But Windows NT is still in
- development and will likely not arrive until 1993.
-
- Certainly Windows 3.1 has a lot going for it. It's faster than Windows
- 3.0 and it traps errors more gracefully. Small design changes improve
- its appearance, and it works better on networks. It is an improved
- environment that offers some of the features of an advanced operating
- system. In addition, Windows has the support of numerous vendors. It's
- a known, if not loved, commodity. The question is whether Windows 3.1
- is good enough, and whether we want to wait until next year to see
- something better.
-
- OS/2 offers us the immediate choice of a modern, carefully crafted
- architecture. We are no longer, by necessity, forced to follow
- Microsoft's sometimes mercurial changes of direction. IBM should be
- singled out for praise for its OS/2 2.0 project. It kept its promises to
- developers. It stayed the course, producing a product that leapfrogs all
- existing PC operating system technologies.
-
- For a long time I considered the Microsoft Windows juggernaut
- unstoppable. Now that I've tried OS/2 2.0, I'm not as certain. IBM has
- launched a product to be reckoned with. Microsoft no longer has a
- monopoly on PC operating systems. IBM's buy-me-and-try-me
- campaign, with introductory pricing, is based on their confidence that
- once you experience OS/2 you will discover its advantages for yourself.
- They're betting you will prefer a house built on rock.
-
-
- [Gene Wilburn is a senior systems analyst at the Royal Ontario Museum,
- Toronto, Canada. CIS: 72435,732. Internet: gene.wilburn@rose.com]