BusLogic

File:Ide-vlb-buslogic-bt-410a-665b74fa9d5a6238811087.jpg-based IDE cache controller from 1995]]

File:PCI SCSI-Controller Buslogic Flashpoint LE edit.JPG-based SCSI host adapter by BusLogic from 1996]]

BusLogic was founded as BusTek, Inc., in Santa Clara, California, in 1988 by Jesse Chen and Peter H. Harvey.{{cite journal | last=Ferelli | first=Mark | date=1998 | url=https://www.proquest.com/docview/220612362/ | title=Focus on Personalities: Wo Overstreet | journal=Computer Technology Review | publisher=West World Publications, Inc. | page=58 | via=ProQuest}}{{cite journal | last=Staff writer | date=July 7, 1992 | url=https://www.proquest.com/docview/271455542/ | title=San Diego | journal=The San Diego Union | page=E2 | via=ProQuest}} Prior to founding BusTek, both Chen and Harvey had worked at Scientific Micro Systems (SMS), a Silicon Valley–based semiconductor fab that produced microprocessors and other integrated circuits. After leaving SMS, the duo founded BusTek with US$40,000 in start-up capital.{{cite book | last=Zhu | first=Lizhi | date=1994 | url=https://archive.org/details/fengynxiguhuayik0000zhul/page/n165/ | title=风云矽谷—华裔科技创业家群相 | lang=zh | trans-title=Stormy Silicon Valley: A Portrait of Chinese-American Technology Entrepreneurs | publisher=Taibei Xian Xindian Shi | pages=138–139 | isbn=9579697817 | via=the Internet Archive}}{{rp|138}}

Under BusTek, the first product that Chen and Harvey designed was a DMA controller for desktop computers.{{rp|138}} Initially developed independently, the controller soon gained the interest of NCR Corporation, who devised a contract with BusTek to manufacture and market the chip under their Microelectronics division.{{rp|138}}{{cite journal | last=Darrow | first=Barbara | date=January 1, 1990 | url=https://books.google.com/books?id=gzAEAAAAMBAJ&pg=PA17 | title=NCR Bus-Master Chip Supports MCA, EISA, AT, NuBus Protocols | journal=InfoWorld | publisher=IDG Publications | volume=12 | issue=1 | page=17 | via=Google Books}} NCR introduced the controller in late 1989 as the 86C05. It supported multiple desktop bus technologies, including Micro Channel, NuBus, ISA, and EISA.{{cite journal | last=Staff writer | date=October 16, 1989 | url=https://archive.org/details/sim_electronic-news_1989-10-16_35_1780/page/n21/ | title=NCR Host Interface Circuit Supports Multiple Buses | journal=Electronic News | publisher=Reed Business Information | volume=35 | issue=1780 | page=20 | via=the Internet Archive}} The 86C05 was ultimately co-designed between the two companies, with BusTek supplying the core design and BIOS, while NCR Microelectronics provided their own tweaks.

In September 1990, BusTek delivered the first bus-mastering SCSI host adapter card for EISA machines, called the BT-742A, which incorporated BusTek's own 80C10 ASIC. A SCSI host adapter card with bus mastering was widely anticipated in the burgeoning EISA market, as it was one of the last steps in making EISA systems competitive in terms of both performance and flexibility against IBM's proprietary Micro Channel architecture, which had such SCSI cards since early 1989.{{cite journal | last=Rosch | first=Winn L. | date=September 24, 1990 | url=https://link.gale.com/apps/doc/A9436563/GPS?sid=wikipedia | title=Speedy BusTek BT-742A Links EISA PCs to SCSI Peripherals | journal=PC Week | publisher=Ziff-Davis | volume=7 | issue=38 | page=22 | via=Gale}}{{cite journal | last=Chartock | first=David S. | date=February 6, 1989 | url=https://link.gale.com/apps/doc/A7063410/GPS?sid=wikipedia | title=EISA Specs Ready; Machines Due Late '89 | journal=Computer & Software News | publisher= Lebhar-Friedman | volume=7 | issue=6 | page=4 | via=Gale}} The BT-742A was a commercial success, BusTek earning $1 million in revenues by the end of 1990.{{rp|138}} The company followed up with the BT-747S/BT-747D and BT-542S/BT-542D in 1991, based on their second-generation 80C20 ASIC. All four cards were based on the SCSI-2 standard; the BT-747 series comprise Fast SCSI adapter cards for the PC/AT and compatibles, while the BT-542D series comprise Wide SCSI adapter cards for EISA systems. The S and D suffixes denote single-ended and differential SCSI interfaces, respectively.{{cite journal | last=Staff writer | date=January 7, 1992 | url=https://link.gale.com/apps/doc/A11678428/GPS?sid=wikipedia | title=Speedy SCSI | journal=MIDRANGE Systems | publisher=1105 Media | volume=5 | issue=1 | page=51 | via=Gale}}{{cite journal | last=Campbell | first=Murray | date=October 23, 1991 | url=https://www.proquest.com/docview/385572380/ | title=More bytes than blackjack: Las Vegas invaded by an army of thought machines | journal=The Globe and Mail | publisher=Bell Globemedia Publishing | page=A1 | via=ProQuest}} By the end of 1991, BusTek earned $10 million in revenue.{{rp|138}}

In July 1992, BusTek acquired San Diego, California–based Chantal Systems—a developer of RAID management software—for an undisclosed sum.{{cite journal | last=Staff writer | date=July 7, 1992 | url=https://www.proquest.com/docview/303060622/ | title=In Other News | journal=San Francisco Chronicle | page=C2 | via=ProQuest}}{{cite journal | last=Quinlan | first=Tom | date=July 6, 1992 | url=https://link.gale.com/apps/doc/A13650183/GPS?sid=wikipedia | title=BusTek Now BusLogic, Buys Chantal | journal=InfoWorld | publisher=IDG Publications | volume=14 | issue=27 | page=39 | via=Gale}} Following the acquisition, BusTek changed their name to BusLogic, reflecting a broader focus on both software and hardware. The eight remaining employees of Chantal were integrated into BusLogic; the former company had filed for Chapter 7 bankruptcy dissolution two months prior.{{cite journal | last=Sullivan | first=Kristina | date=July 6, 1992 | url=https://link.gale.com/apps/doc/A12315920/GPS?sid=wikipedia | title=BusTek to Acquire Disk-Array Maker Chantal Systems | journal=PC Week | publisher=Ziff-Davis | volume=9 | issue=27 | page=139 | via=Gale}} At the end of the year, BusLogic posted a doubled revenue of $20 million.{{rp|138}}

The first products developed jointly between BusLogic and Chantal debuted in February 1993. They were a trio of product bundles comprising bus-mastering Fast SCSI host adapters supporting either the ISA, Micro Channel, or EISA buses, each bundled with Chantal's Paragon RAID configuration software.{{cite journal | last=Fisher | first=Susan E. | date=February 22, 1993 | url=https://link.gale.com/apps/doc/A13433948/GPS?sid=wikipedia | title=BusLogic Rolls Out First Chantal RAID Bundles | journal=PC Week | publisher=Ziff-Davis | volume=10 | issue=7 | page=78 | via=Gale}}{{cite journal | last=Staff writer | date=March 15, 1993 | url=https://link.gale.com/apps/doc/A13504164/GPS?sid=wikipedia | title=BusLogic Bundles Disk Array | journal=Digital News & Review | publisher=Reed Business Information | volume=10 | issue=6 | page=28 | via=Gale}} BusLogic's Chantal software-based RAID products were widely used in hospitals, universities, and blue- and white-collar industries during the mid-1990s, handling loads of up to around 800 simultaneous users.{{cite journal | last=Ray | first=Garry | date=August 9, 1993 | url=https://books.google.com/books?id=81WcX8nG1uUC&pg=PA101 | title=BusLogic's Chantal offers inexpensive RAID capability with high performance, reliability | journal=Computerworld | publisher=IDG Publications | volume=27 | issue=32 | pages=101–102 | via=Google Books}}

In November 1993, the company announced their first SCSI RAID controller, comprising the DA-2788, DA-2988, and DA-4988. The foremost RAID controller connected to an EISA bus, while the latter two were BusLogic's first products for the Peripheral Component Interconnect (PCI) bus.{{cite journal | last=Nass | first=Richard | date=November 11, 1993 | url=https://link.gale.com/apps/doc/A15134872/GPS?sid=wikipedia | title=Connect Disk Arrays to EISA or PCI Buses | journal=Electronic Design | publisher=Endeavor Business Media | volume=41 | issue=23 | page=152 | via=Gale}}{{cite journal | last=Fisher | first=Susan E. | date=December 6, 1993 | url=https://link.gale.com/apps/doc/A14612222/GPS?sid=wikipedia | title=Server Vendors Ride PCI Bus | journal=PC Week | publisher=Ziff-Davis | volume=10 | issue=48 | page=73 | via=Gale}}

By the end of 1993, and with Chantal under their wing, the company employed 95 workers and generated $15 million in sales for the year,{{cite book | last=((Corporate Technology Information Services)) | date=1994 | url=https://archive.org/details/hiddenjobmarket10000unse/page/24/ | title=The Hidden Job Market | publisher=Peterson's Guides | page=24 | isbn=9781560793168 | via=the Internet Archive}} becoming a market leader in the SCSI adapter segment. Their largest competitors at this point were Adaptec and Future Domain.{{cite journal | last=Sullivan | first=Kristina B. | date=October 18, 1993 | url=https://link.gale.com/apps/doc/A14463204/GPS?sid=wikipedia | title=Get set for the PCI invasion | journal=PC Week | publisher=Ziff-Davis | volume=10 | issue=41 | page=98 | via=Gale}} BusLogic deviated from their SCSI roots with the release of the KT series of cache controller cards for IDE hard drives, introduced in January 1994.{{cite journal | last=Francis | first=Bob | date=January 31, 1994 | url=https://books.google.com/books?id=AzsEAAAAMBAJ&pg=PA27 | title=BusLogic speeds data transfer with IDE cache boards | journal=InfoWorld | publisher=IDG Publications | volume=16 | issue=5 | page=27 | via=Google Books}}{{cite journal | last=Schroeder | first=Erica | date=January 31, 1994 | url=https://link.gale.com/apps/doc/A15045234/GPS?sid=wikipedia | title=BusLogic Controller Kit Soups Up Hard Drives | journal=PC Week | publisher=Ziff-Davis | volume=11 | issue=4 | page=30 | via=Gale}} This family consisted of the KT-510A, KT-910A, and the KT-410A, supporting ISA, PCI, and the VESA Local Bus (VLB) respectively; the lattermost was BusLogic's first product supporting VLB.

In June 1994, BusLogic debuted their so-dubbed MultiMaster technology with a trio of bus-mastering Fast SCSI host adapters for ISA, VLB, and EISA. MultiMaster was BusLogic's name for their latest ASIC, which incorporated core logic common to all of the major desktop computer buses. This integration significantly reduced the number of device drivers they had to distribute, as now the end user's operating system was the only consideration (rather than the bus architecture in tandem with the operating system).{{cite journal | last=Francis | first=Bob | date=June 27, 1994 | url=https://books.google.com/books?id=eDgEAAAAMBAJ&pg=PA46 | title=BusLogic unveils line of SCSI host adapter cards | journal=InfoWorld | publisher=IDG Publications | volume=16 | issue=26 | page=46 | via=Google Books}}{{cite journal | last=Hachman | first=Mark | date=January 2, 1996 | url=https://www.proquest.com/docview/228150499/ | title=BusLogic and Mylex Agree to Merger | journal=Electronic Buyers' News | publisher=CMP Publications | page=2 | via=ProQuest}}

By late 1994, the company was the second-largest producer of SCSI silicon, behind Adaptec.{{cite journal | last=Staff writer | date=October 5, 1994 | url=https://techmonitor.ai/technology/buslogic_sets_sights_on_europe_and_plans_three_offices_over_there | title=BusLogic Sets Sights on Europe and Plans Three Offices Over There | journal=Computer Business Review | publisher=New Statesman Media Group | archiveurl=https://web.archive.org/web/20230715162858/https://techmonitor.ai/technology/buslogic_sets_sights_on_europe_and_plans_three_offices_over_there | archivedate=July 15, 2023}} Their catalog comprised 25 products, while their headquarters office spanned 36,000 square feet, housing 130 workers, including 50 full-time engineers. In addition, they had multiple branch offices throughout the United States and abroad, including in Boston, Minneapolis, Washington, D.C., Taipei, Hong Kong, Paris, Tokyo.{{rp|139}}

BusLogic found the going rough in the mid-1990s, after Adaptec had acquired several of BusLogic's smaller competitors including Future Domain and Trantor Systems.{{cite book | last=Mohr | first=James | date=2000 | url=https://archive.org/details/supportingwindow0000mohr/page/91/ | title=Supporting Windows NT & Windows 2000 Workstation and Server | publisher=Prentice Hall | isbn=0130830682 | via=Google Books}}{{rp|91}} Despite this, BusLogic generated annual sales of $24 million in 1995; employment peaked at 140 workers that year.{{cite book | last=((Corporate Technology Information Services)) | date=1996 | url=https://archive.org/details/hiddenjobmarket100pete/page/31/ | title=The Hidden Job Market | publisher=Peterson's Guides | page=31 | isbn=9781560793168 | via=the Internet Archive}} The company planned further expansion into Europe in 1994, with offices in Germany and the United Kingdom earmarked for opening in the following year. BusLogic additionally planned to sell products based on Fibre Channel (a high-speed, lossless data transfer protocol widely used in storage area networks), joining the Fibre Channel Industry Association and designing peripherals based on the standard for release in 1996.{{cite journal | last=Costlow | first=Terry | date=October 9, 1995 | url=https://www.proquest.com/docview/208111074/ | title=Fiber Channel vendors gear up for Comdex assault | journal=Electronic Engineering Times | publisher=CMP Publications | page=10 | via=ProQuest}}

Before they could release any Fiber Channel products, however, the company was acquired by Mylex Corporation, a maker of RAID controllers and LAN management software. The acquisition was announced in December 1995, BusLogic receiving stocks of Mylex valuated at roughly $55 million.{{cite journal | last=Staff writer | date=December 18, 1995 | url=https://www.proquest.com/docview/398556438/ | title=Mylex to Buy Hardware Maker | journal=The Wall Street Journal | publisher=Dow Jones & Company | page=B6 | via=ProQuest}} The acquisition was finalized in late January 1996, BusLogic's shareholders netting additional stock options post-acquisition, increasing the terms of the sale to over $67.9 million.{{cite journal | last=Staff writer | date=January 8, 1996 | url=https://link.gale.com/apps/doc/A17763851/GPS?sid=wikipedia | title=Mylex Bids $67.9M for BusLogic | journal=Electronic News | publisher= Sage Publications | volume=41 | issue=2098 | page=40 | via=Gale}} Mylex retained BusLogic's Santa Clara plant as a manufacturing facility for their RAID products.

Following the sale of BusLogic to Mylex, co-founder Harvey founded Creative Design Solutions, a maker of network-attached storage servers and other local area network products.{{cite journal | last=McHale | first=Tom | date=July 28, 1997 | url=https://link.gale.com/apps/doc/A19635735/GPS?sid=wikipedia | title=Startup contributes to wave of thin LAN server gear | journal=Electronic Buyers' News | publisher=UBM LLC | issue=1068 | page=30 | via=Gale}}

The acquisition of BusLogic was initially a success for Mylex, the company's revenue growing from about $100 million in mid-1995 to $173 million in mid-1996.{{cite journal | last=Hamblen | first=Matt | date=March 3, 1997 | url=https://books.google.com/books?id=SLj9aM9_h7UC&pg=PT106 | title=Mylex looks for another rebound | journal=Computerworld | publisher=IDG Publications | volume=31 | issue=9 | page=109 | via=Google Books}} However, Mylex's stock dropped sharply in July 1996, after several of their largest customers either announced their own in-house RAID controllers or began making contracts with Adaptec, their largest rival. Following a long sales slump, in July 1997, Mylex announced layoffs within the company and disclosed the imminent shuttering of the old BusLogic plant.{{cite journal | last=Robson | first=Douglas | date=August 1, 1997 | url=https://link.gale.com/apps/doc/A19706330/GPS?sid=wikipedia | title=Mylex bets on new product to end slump | journal=San Francisco Business Times | volume=11 | issue=51 | page=5 | via=Gale}}

BusLogic's device drivers are still used by Oracle Corporation's VirtualBox as the sole means to emulate SCSI devices in a virtual machine, {{as of|2023|lc=y}}.{{cite book | last=Portnoy | first=Matthew | date=2023 | url=https://books.google.com/books?id=_xi3EAAAQBAJ | title=Virtualization Essentials | publisher=John Wiley & Sons | isbn=9781394181575 | via=Google Books}}{{rp|35}}{{cite journal | last=Kennedy | first=Randall C. | date=March 26, 2007 | url=https://books.google.com/books?id=tDcEAAAAMBAJ&pg=PA30 | title=Desktop Virtualizers Vie for Position | journal=InfoWorld | publisher=IDG Publications | volume=29 | issue=13 | pages=28–35 | via=Google Books}}{{rp|30}}

{{reflist|colwidth=30em}}

Category:1988 establishments in California

Category:1996 disestablishments in California

Category:American companies established in 1988

Category:American companies disestablished in 1996

Category:Computer companies established in 1988

Category:Computer companies disestablished in 1996

Category:Defunct computer companies of the United States

Category:Defunct computer hardware companies

Category:Defunct semiconductor companies of the United States

Category:SCSI