Classic Computers Emulated Part 6: The PC/AT Clones

 

.....and then loses control of that standard!

Windows 386 2.01, which was released in September 1987 for Compaq customers who owned the Deskpro 386.

Like the PC/XT, the IBM PC/AT was widely cloned as well. While these class of computers was still well beyond the price point of what home buyers could afford, they became widely used in the office/corporate setting. And because they were widely cloned as well, the prices of these machines fell rapidly. Not only that, the manufactures of the AT-class systems were usually the early adopters of new technologies. For example, with the HP Vectra series of Compatibles, faster 286 processors were used. Compaq took a early lead by making a desktop computer with a 386 processor in it, beating IBM in a technological arms race. Big Blue was losing it's position as a market leader in the process. 

HP Vectra
The HP Vectra was not Hewitt Packard's first foray into corporate computing. In November 1983, the company released the  Model 150 computer. This computer was very innovative for its time in that it had a touchscreen display, which was state-of-the-art for 1983. This computer was one of the first to use those new 3-1/2 inch floppy disk, beating the Macintosh by two months. This workstation had a 16-bit Intel 8088 and ran MS-DOS, but it was not a IBM Compatible. It was not that successful in the marketplace due to the fact that the computer was not a IBM Compatible. The Vectra series of computers was HP's response to their customers wanting IBM Compatible machines. The computer sported a Intel 286 processor running at 8MHz. I was able to get the original software for the HP Vectra's running under PCEM. I decided to emulate a standard PC/AT 286 PC with a standard BIOS. At first, I struggled to get HP MS-DOS installed. I was successful after experimenting with different drives geometries that would be accepted by both the BIOS and MS-DOS. Afterwards, I've installed the Executive Spreadsheet and the Executive Card Manager. The Vectra's shipped with the Personal Application Manager, or PAM. This was a application launcher for DOS that allowed its users to open their programs without using the command-line. One of various attempts in the 80's to make MS-DOS easier to use.
Executive Spreadsheet for the HP Vectra PC Compatibles.
PAM, or the Personal Application Manager. This was a application launcher for MS-DOS.

Compaq Makes IBM Look Silly (Again)
To say that Compaq was a innovator in the industry would have been a understatement. Their Portables were critically acclaimed and praised by corporate users everywhere for their innovative design. The Compaq Portable was not only one of the first compatibles on the market, but it was also the first portable compatible as well. The computer was so well received in the marketplace that IBM responded with the Portable PC in 1984. This computer was essentially a IBM PC/XT in a portable form-factor. These computers were not as well received as the Compaq portable. Compaq saw an opportunity after the release of the IBM PC/AT in 1984. The Houston company realized that IBM would be slow to release a computer built around the Intel 386 processor. The Intel 386, released in 1985, was the companies first 32-bit processor. Compaq started to build a desktop computer around this new CPU. Released in early 1987, the new computer set the world on fire as it was the first PC to use the 386. The computer was critically acclaimed for both its design and its performance. It could beaten any 286 system on the market at the time. Many industry pundits constantly remarked how IBM was slow at adapting the new processor, and praised Compaq for taking the lead. The first revisions of the Deskpro 386 shipped with their own, Compaq-branded, EGA adapters as well. Eventually, the VGA (Video Graphics Array) video adapters were provided as an option once that standard was introduced in 1987.

The Compaq FASTART program. This program was used to configure the memory, BIOS, and DOS environment on the Compaq Deskpro 386

I opted to use PCEM to emulate this configuration. The screenshots are dated in that at the time, I was running PCEM Version 9.I was using a standard PC/AT compatible VM with a Intel 386  to run the Compaq software. I was using a standard AT-386 BIOS.  However, I've updated my configuration to PCEM Version 13, which does emulate the proper machine now. These screenshots don't reflect the current setup. However, I wasn't going to redo the screenshots of the software runnng on the Deskpro 386, as I would be essentially just be taking the same screenshot again. Besides that, the software runs without issue once the emulated computer was configured properly. These older machines needed DOS configuration programs to setup the BIOS. Once I located the software, I was able to configure the machine properly. This would have been reminiscent to how the users of these computers would have to had to configure their machines back in the day. Not for the impatient. However, I found enjoyment to emulate a computer that reminded the world that IBM was not on top of their game.

The FASTART program showing the configuration info for the Deskpro.
Windows 386
Microsoft brought many of the Deskpro 386 computers as development machines once the hardware became available. Windows 386 would be developed on these workstations as a result. As the name implies, Windows 386 was designed so that the graphical environment could take advantage of the capabilities of the 386. This included the Virtual 8086 Mode, which allowed Windows to have multiple DOS programs running at the same time. The 386 could virtualize graphics as well, which meant that graphical programs (depending on the video standard), could run in a window as well.  Each DOS session acted as a single-tasking, virtual computer running DOS. Or a virtual machine for short. Microsoft was busy developing this environment as the 386 processor was becoming more common. The environment was made available for Compaq customers on September 1987. The Deskpro 386 could run GUI environments at better performance that most of their contemporaries. However, Windows 386, like most of these GUI environments at the time, were still very demanding on the hardware they ran on. As a result, most PC users still opted to run text-based programs as they weren't as resource hungry as their graphical counterparts. If text-based multitasking was necessary, then these users opted could opt for Desqview instead, which could now take advantage of the new processor as well.
Windows 386 2.01 with a DOS window open. Norton Sysinfo is showing the memory configuration of the Desktop. As shown in the title bar, I'm emulating the proper machine now.

Computer users in the late 80's started to witness a technological arms race as computer manufactures were rushing to embrace the latest and greatest. By the end of the decade, high-end users were embracing the Intel 386, and be amazed by the graphical capabilities of the VGA Video Standard. The Creative Labs SoundBlaster, a audio adapter capable of CD audio playback, would be released by the end of that decade. Intel was putting the finishing touches on their new desktop processor, the 486.

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