_{Cover of the September 1984 issue of BYTE}

This issue of Byte was a special issue emphasizing IBM. The IBM PC had been released a few years earlier and even in 1984, it wasn't a given that the PC and DOS were going to take over the world. CP/M was still around with CP/M 86 having been introduced as well and even "compatible" PCs were not always that compatible yet. I think Byte did one of these IBM special issues (which also covered IBM's larger systems as well) for a few years at least. The September 1984 issue of Byte includes:

Introduction

• IBM and its PCs - How IBM stepped into a void in a crowded market to provide the ability to address a lot of memory (for the time), an 80 column display, an open system architectures, and a good keyboard/word processing combo...a combination of features lacking in other systems. I find it interesting that this editorial calls the IBM PC the third major standard behind CP/M and the Apple II. Not sure how the Apple II gets that label as there were other machines nearly or in some cases more popular. The Apple II line (including the IIgs) sold 5-6 million machines, the TRS-80 line sold 2.5 million, Atari sold 4-5 million Atari 8-bit computers and the Commodore 64 sold 17-20 million Commodore 64s and I don't think that number includes the compatible Commodore 128 that sold around 4 million. Granted, all of these systems were still in production when this issue was published so these numbers had not yet been reached.


• IBM Personal Computers at a Glance - While there were a number of upgrades available, a basic IBM PC in 1984 included an Intel 8088 4.77MHz CPU, 256K RAM (max 640K), 360K 5.25-inch floppy drive, and five expansion slots for $1995. The IBM PC XT was very similar but included a 10 MB hard drive and eight expansion slots and cost $4395. The PCjr was IBMs attempt at a purely "home computer" and included only 64K (max 128K) and a terrible chicklet keyboard but included a built-in color adapter and cartridge slots (but no standard expansion slots). Finally, there was the IBM Portable PC which basically had the same specs as the IBM PC in a luggable form factor and built-in 9-inch amber monitor. Then there were specialized configurations designed for use with IBMs mainframes and other specialized machines.

_{Table of Contents from the September 1984 issue of BYTE}

Stalwarts

• A Tale of Two Operating Systems - A comparison of Microsoft's PC-DOS (which was at version 2.0 at this point) and IBM's XT/370 OS.


• The Future of UNIX on the IBM PC - A look at UNIX on the IBM PC (which was already available at the time).


• Five Window Managers for the IBM PC - Before Microsoft Windows came to dominate, there were numerous other window managers that ran on top of DOS. This article includes a preview of five of them including DesQ, WindowMaster, VisiOn, Concurrent DOS, and of course Windows itself.


• Two Logos for the IBM PC - A comparison of two implementations of Logo including one by Digital Research (DR Logo) and one by IBM (IBM Personal Computer Logo).


• The Logical Record Keeper: PROLOG on the IBM PC - A look at a PROLOG implementation for the IBM PC based on DEC-10 PROLOG.


• An Introduction to PC Assembly Language - A beginner's guide to assembly language on the 8088. The only assembly language programming I ever did was on a 68000 in college. I understand that the 68000 is much nicer to program for in assembly than 8086/8088 CPUs and their derivatives.

_{The IBM PC}

Extra Power for Special Needs

• The IBM XT/370 Personal Computer - The XT/370 was a special version of the IBM PC XT that could operate as an XT personal computer, an interactive full screen terminal to a mainframe, or in a mode that can actually run System/370 programs.


• Number Crunching on IBM's New S9000 - The S9000 was based on the Motorola 68000 CPU and could use large amounts of RAM (2 MB or more). It was designed for scientific uses and this article evaluates its performance for use in nuclear magnetic resonance spectrometry.


• The Mainframe Connection: IBM's 3270 PC - The 3270 PC was a special version of the PC that included the high speed terminal interface for mainframes and could simultaneously run DOS programs.


• Modems: The Next Generation - A comparison of some of the latest modems including the Prentice X100 POPCOM ($475), Hayes Smartmodem 1200B ($599), Bizcomp PC-Intellimodem ($499), Novation ACCESS 1-2-3 ($595), Cermetek INFO-MATE 212PC ($480), and Microcom ERA2 ($499). All support 1200bps.

_{Back cover of the September 1984 issue of BYTE}

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