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Compaq Portable

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In 1985, Compaq introduced the Portable 286, but it was replaced by the more compact Portable II in a redesigned case within a few months. The Portable 286 featured a full-height hard disk, and the options of one half-height floppy drive, two half-height floppy drives, or a half-height floppy drive
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came out, Compaq upgraded the BIOS. Although the Portable was not offered with a factory hard disk, users commonly installed them. Starting in 1984, Compaq began offering a hard disk-equipped version, the Portable Plus, which also featured a single half-height floppy drive. The hard disk offered
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which supports the latter's graphics modes, but uses the former's character set in 80x25 text mode. When using the internal monochrome monitor the 9×14 font is used, and the 8×8 one when an external monitor is used (the user switches between internal and external monitors by pressing
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also rated the Compaq Portable very highly for compatibility, reporting that all tested applications ran. It praised the "rugged" hardware design and sharp display, and concluded that it was "certainly worth consideration by anyone seeking to run IBM PC software without an IBM PC".
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instead of IBM's. All Portables shipped with 128 KB of RAM and 1-2 double-sided double-density 360 KB disk drives. Like the non-portable IBM PC, the Compaq Portable runs on power from an AC outlet only; it has no battery.
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Aside from using DOS 1.x, the initial Portables are similar to the 16 KB – 64 KB models of the IBM PC in that the BIOS was limited to 544 KB of RAM and did not support expansion ROMs, thus making them unable to use
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to replace one floppy disk drive, and logos and badges with gold backgrounds instead of silver. Independent computer stores were previously doing this upon request of users, and Compaq saw this as a lost revenue opportunity.
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keyboards. The foam pads the keyboards used to make contact with the circuit board when pressed disintegrate over time, due to both the wear of normal use and natural wear. The CRT display also suffered from a low
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Although numerous other companies soon also began selling PC compatibles, few matched Compaq's achievement of essentially-complete software compatibility with the IBM PC (typically reaching "
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wrote, after testing a prototype, that the Compaq Portable "looks like a sure winner" because of its portability, cost, and high degree of compatibility with the IBM PC. Its reviewer tested
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personal computer. The latter two companies were threatened by IBM for BIOS copyright infringement, and settled out of court, agreeing to re-implement their BIOS. There was also the
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retained the right to license MS-DOS to other companies. Only Compaq was able to fully capitalize on this, by aiming for complete IBM PC and PC DOS software compatibility, while
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Compaq used a "foam and foil" keyboard from Keytronics, with contact mylar pads that were also featured in the Tandy TRS-80, Apple Lisa 1 and 2, Compaq Deskpro 286 AT, some
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to other computer manufacturers. The only difficulty was the BIOS, because it contained IBM's copyrighted code. Compaq solved this problem by producing a
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A Compaq Portable with the keyboard detached ready for use. This machine has an aftermarket hard disk and floppy disk drives added.
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diskette drive or US$ 3,590 for dual, full-height diskette drives. The 28 lb (13 kg) Compaq Portable folded up into a
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Cassette BASIC, but this was superseded in a few months by DOS 2.00 which added hard disk support and other advanced features.
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was smaller and lighter version of Compaq Portable 286; it was less expensive but with limited upgradability and a slower
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operating system. Like Compaq, they recognized the replicability of the IBM PC's off-the-shelf parts, and saw that
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workalike that performed all documented functions of the IBM PC BIOS, but was completely written from scratch.
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The first Portables used Compaq DOS 1.10, essentially identical to PC DOS 1.10 except for having a standalone
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The Compaq Portable was announced in November 1982 and first shipped in March 1983, priced at
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parts for the PC and published full technical documentation for it, and because
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Double asterisk (**) denotes product lines established after acquisition by HP
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Knights of the New Technology: The Inside Story of Canada's Computer Elite
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Released in 1983 upgraded version; The Compaq Portable Plus simply had a
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in 2002; existing product lines and intellectual property split between
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in revenue, an American Business record. In the second year revenue hit
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and 8088-based, but not entirely IBM PC software compatible, Dynalogic
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Asterisk (*) denotes product lines continued after acquisition by HP
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Bottom of the suitcase with removable keyboard; stand is deployed
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Front of the suitcase, with connectors for parallel and CGA port
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cards, hard disks, or similar hardware. After DOS 2.x and the
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drives or, optionally, one floppy drive and a 10 MB hard drive
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Rosenberg, Ronald (1984-02-28). "Doubts Raised About PCjr".
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Compaq's efforts were possible because IBM had used mostly
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Compaq sold 53,000 units in the first year with a total of
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The Compaq Portable has basically the same hardware as an
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CED in the History of Media Technology - Compaq Portable
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Obsolete Computer Museum - Compaq Portable description
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and others began selling similarly reverse-engineered
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setting an industry record. Third year revenue was at
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It became available two years after the similar, but
849:"Eagles, Text Editors, New Compilers, and Much More" 769:and Compaq Portable 486c were later in the series. 226:'s first product, to be followed by others in the 723:The Compaq Portable 286, Compaq's version of the 1861: 342:Other contemporary systems include the portable 1021: 1019: 1017: 991: 989: 987: 813:, By Bill Machrone, Page 451, June 1983, PC Mag 745:The Compaq Portable machine was the first of a 1090: 700: 413:IBM responded to the Compaq Portable with the 1213: 1084: 1061: 339:the BIOS to head off copyright legal claims. 1025: 1014: 984: 644:often reduced the space available for use. 1353: 1220: 1206: 36: 1142:Inc, InfoWorld Media Group (1986-04-21). 1052: 1046: 843: 734: 536:Rear of the suitcase, with AC power input 691: 572: 560:Keyboard removed, computer ready for use 705: 375: 14: 1875:Computer-related introductions in 1983 1862: 897: 718: 640:would be 10 to 21 megabytes, although 249:as a PC "work-alike", but contained a 1201: 1067: 102: (equivalent to $ 9,160 in 2023) 1141: 1093:"Compaq: Have Computer Will Travel" 24: 747:series of Compaq Portable machines 619:that did not require the IBM PC's 135:128 KB (expandable to 640 KB) 25: 1886: 1176: 1844: 1843: 1834: 1833: 1822: 1821: 1812: 1811: 925:Hardware:Review:Seequa Chameleon 553: 541: 529: 517: 452:The machine has a hybrid of the 1183:Old Computers - Compaq Portable 1135: 1111: 898:Sanger, David E. (1984-06-09). 942: 930: 918: 891: 866: 837: 816: 804: 779: 589:had kept the right to license 432:, another US business record. 234:series. It was not simply an 13: 1: 1334:Digital Equipment Corporation 1148:. InfoWorld Media Group, Inc. 1068:Alsop, Stewart (1994-01-31). 1026:Dahmke, Mark (January 1983). 900:"EAGLE'S BATTLE FOR SURVIVAL" 772: 687: 1091:Sandler, Corey (June 1983). 997:"Compaq I Portable computer" 651: 406:case the size of a portable 7: 1123:www.computinghistory.org.uk 880:, p. 50, July 18, 1983 701:Upgrades of Compaq Portable 568: 268:that it ran nearly all its 224:Compaq Computer Corporation 218:which was one of the first 83:; 41 years ago 52:Compaq Computer Corporation 10: 1891: 1249:Hewlett Packard Enterprise 1227: 738: 1797: 1766: 1745: 1695: 1674: 1635: 1526: 1517: 1496: 1442: 1435: 1403: 1369: 1362: 1351: 1314: 1293: 1267: 1258: 1235: 826:, Key Porter Books, 1983 648:and a tape backup drive. 435: 198: 183: 175: 163: 151: 139: 131: 118: 106: 95: 77: 67: 57: 47: 35: 1421:Professional Workstation 1072:. InfoWorld. p. 102 966:www.vintage-computer.com 949:Review Responses: Seequa 577:Running WordPerfect 5.0 260:that was so similar to 179:28 lb (13 kg) 27:Early portable computer 874:"Corona advertisement" 741:Compaq Portable series 735:Compaq Portable series 697: 578: 370:Compaq Portable series 293:Columbia Data Products 228:Compaq Portable series 171:-compatible video card 62:Compaq Portable series 1839:DEC operating systems 1028:"The Compaq Portable" 962:"Compaq Commodore 64" 937:The Chameleon mystery 695: 576: 1001:www.oldcomputers.net 706:Compaq Portable Plus 696:Compaq Portable Plus 612:on the open market. 606:Phoenix Technologies 376:Production and sales 270:application software 242:computer that ran a 203:Compaq Portable Plus 18:Compaq Portable Plus 1675:Internet appliances 811:Aboard the Columbia 767:Compaq Portable 486 763:Compaq Portable 386 759:Compaq Portable III 719:Compaq Portable 286 337:reverse-engineering 256:, and a version of 32: 1164:has generic name ( 904:The New York Times 847:(September 1983). 751:Compaq Portable II 698: 579: 477:desktop computer. 251:reverse-engineered 96:Introductory price 30: 1857: 1856: 1762: 1761: 1670: 1669: 1513: 1512: 1349: 1348: 604:" at best) until 602:95% compatibility 491:Type 4, and some 430:US$ 503.9 million 222:systems. It was 220:IBM PC compatible 216:portable computer 208: 207: 72:Portable computer 16:(Redirected from 1882: 1847: 1846: 1837: 1836: 1825: 1824: 1815: 1814: 1698:and subnotebooks 1524: 1523: 1440: 1439: 1367: 1366: 1357: 1328:Tandem Computers 1306:Michael Capellas 1265: 1264: 1222: 1215: 1208: 1199: 1198: 1170: 1169: 1163: 1159: 1157: 1149: 1139: 1133: 1132: 1130: 1129: 1115: 1109: 1108: 1106: 1104: 1088: 1082: 1081: 1079: 1077: 1065: 1059: 1058: 1055:The Boston Globe 1050: 1044: 1043: 1041: 1039: 1034:. pp. 30–36 1023: 1012: 1011: 1009: 1007: 993: 982: 981: 979: 977: 968:. 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Index

Compaq Portable Plus

Compaq Computer Corporation
Compaq Portable series
Portable computer
Operating system
MS-DOS
CPU
Intel 8088
floppy disk
green screen
CGA
Backward
compatibility

IBM PC
Compaq Portable Plus
portable computer
IBM PC compatible
Compaq Computer Corporation
Compaq Portable series
Compaq Deskpro
8088
CPU
Microsoft
DOS
reverse-engineered
BIOS
MS-DOS
IBM
PC DOS
application software

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