This is the 27th excerpt from the second book in the Defen series: BIT: Business Information Technology: Foundations, Infrastructure, and Culture
In August of 1981, when IBM introduced its model 5150 PC:
The Intel 8088, developed as a cheaper and slower version of the 8086, had been introduced in 1979 to meet demand from low end manufacturers for something that would work with older 8-bit peripherals, and was widely regarded as a dead end machine.
Thus the original IBM PC as introduced in August of 1981 was seriously behind the technology curve of the time:
In contrast a complete Apple II system listed at $1,298.
Nevertheless, IBM sold about 13,000 units before the end of the year and nearly half a million during 1982.
Most of those units went to data center operators eager to experiment with any new offering from IBM. In most cases, however, the absence of a working COBOL compiler (the mid 1982 Microsoft COBOL for PC-DOS was not well received in the mainframe community) and any means of connecting them directly to the mainframe meant that most of the machines bought were simply shelved - many never even unpacked.
Some, however, went to commercial software developers to whom the access provided by the IBM name signified opportunity. In short order, therefore Wang ported its 3270 board and emulation to the PC, Satellite Software ported its WordPerfect 1.0, Dan Bricklin and Bob Frankston ported Visicalc to the PC, and Mitch Kapor ported his VisiPlot add-in software for Visicalc to the PC, added his own spreadsheet code, and sold the result as Lotus 1 2 3 for IBM.
By early 1984, when IBM introduced the PC/AT, three things had developed:
The PC/AT's name and marketing program focused on the one thing it most clearly was not: Advanced Technology.
Released in December, 1984, the PC/AT had the 5.77 Mhz 80286 CPU Intel announced in February of 1982, five months after the original IBM PC debuted.
The core machine ran PC DOS and BASIC in 256K of memory but came with a remarkable list of options including:
For most people, however, the options that counted were:
|Component||List Price (January, 1985)|
|Base PC/AT, 256K, 6Mhz 80286, 1.2MB Floppy (no hard disk, monitor or graphics board)||$3,995|
|Fully functional base package - 10MB Disk, 256K, 1.2Mb Floppy, base monitor and keyboard, PC-DOS licence||$5,500|
|512K RAM upgrade (to 640K for dos users - a board swap from one 256K board to one 512K board plus one 128k add-in.||$1,125|
|Minimal graphics adapter (EGA card)||$542|
|Basic color display for EGA card (15")||$849|
|Floor standing enclosure||$165|
|Intel 80287 Floating Point co-processor||$375|
Here's how a reviewer in early 1985 described the PC/AT's graphics options:
More appealing to the mass market is the new Enhanced Color Graphics Display ($849) and the Enhanced Color Graphics Adapter ($524 to $982 depending on options). The adapter can be used to drive any IBM display. On the IBM monochrome display it can generate the current high quality text (characters are 9 by 14 pixels) as well as graphics with a resolution of 640 by 350. On the IBM Color Display (model 5153) or compatible RGB monitor it can duplicate all of the standard color graphics modes, but also delivers 16 colors to both medium-and high-resolution graphics. On the new Enhanced Display (model 5154) it can duplicate the old modes and can produce images with a resolution of 640 by 350 pixels using 4 to 16 colors.
The most stunning thing about this machine was the market reaction to it. Over the next year something like 1.4 million units were sold - mostly at list prices to people who had other choices including:
The Tandy offered lower cost, had national distribution, a deep installed base, and included a wide range of business applications covering entry level financial management, word processing, and even automated UUCP (the internet's predecessor) network access.
The version roughly as shown below, with dual 21" monitors, a 20Mhz processor including the MC68881 math co-processor, 32MB of RAM, and dual internal 104MB disks as well an external SCSI controller cost about $38,800.
The Sun 160 offered engineers and others working with high end graphics or other software an open, network based, environment with considerably more horsepower than a low end VAX at a fraction of the latter's cost.
Relatively few were sold, but the machine was a major hit among the academic researchers whose work established the CAD/CAM (Computer Assisted Design, Computer Assisted Manufacturing) industry that was to the power the enormous productivity gains in the US economy in the mid to late nineties.
Compaq was also the first to clone the AT, producing its substantially cheaper 286e by mid 1985 and was the second company (after ALR) to transition to the 386 the following year. Because Compaq had written the hard disk extensions to MS-DOS 2.0 (making it 2.1) while the PC/AT shipped with the somewhat buggy and often incompatible PC-DOS 3.0, Compaq's ads at the time call their machine more compatible with IBM, than IBM's own AT.
The Macintosh offered the home and professional user a complete set of graphical applications with all the advantages of Postscript (see note below) printing for less money than the "bare metal" PC/AT.
It became a major hit with the printing and publishing industry because of this, but the defining characteristic of companies buying it was that they had no formal systems departments in place prior to getting their first Macs.
In all four competing types of machine the software worked out-of-the box and the hardware was generally reliable within the context of the day. Neither statement was true for the AT, mainly because Microsoft's adaptation of MS-DOS for the 8086 did not allow smooth migration to the 80286 environment and a majority of third party board makers didn't initially get full access to the software APIs.
Here's what an early reviewer not working for a PC dominated magazine found:
Programs written in Basic for the PC ran without a hitch, which makes sense since Basic 3.0 bundled with the AT contains only minor differences from Basic 2.0 bundled with the PC. Many business packages, including word processing and graphics programs, also worked without a hitch.
One curious result of our testing was an "insufficient memory" message when we tried to install WordStar. Our AT had 640K RAM, yet the installation program refused to believe that it was there. We never did get WordStar to work, but we learned that WordPerfect works quite well.
Of course, the biggest test of PC compatibility is running Lotus 1-2-3 and Flight Simulator. Unfortunately, the AT ran neither. We could start Flight Simulator, but the program soon froze.
All in all, a little more than half of the PC software we tried on the AT ran without problems. Some loaded fine, but bombed out during operation. Some would not load at all. Our best advice is to try your favorite software first.
Reviewers working for PC Magazine, Byte, and other publications dedicated to the PC told a very different story. To them the PC AT was a magnificent technical breakthrough (it wasn't) costing less than the MacXL (it didn't), running faster than anything else (it didn't) offering 32bit computing (it didn't), breaking the graphics mold (it didn't) and running existing software failure free (it didn't.)
What it did do, however, was establish Microsoft's operating system software as the industry standard. It is hypothesized that unrestricted application software copying in the MS-DOS environment had a role in this since office software purchased from IBM for PC-DOS (IBM's name for MS-DOS) would not work on a Mac or under CP/M86 but the evidence for and against this is equivocal.
It is clear that mainframe management's control of corporate systems budgets and their commitment to IBM influenced purchasing and this clearly created a something-for-nothing opportunity for a lot of people willing to take home office software, but how important this actually was in building its market share, is unknown.
Notice that getting the facts right is particularly important for BIT - and that the length of the thing plus the complexity of the terminology and ideas introduced suggest that any explanatory anecdotes anyone may want to contribute could be valuable.