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	Micro Channel Architecture - Search Results - MSN Encarta
		Micro Channel Architecture, in computer science, the design of the bus in IBM PS/2 computers (except Models 25 and 30).
		Channel (body of water), term used to denote a large strait or narrow sea, such as the English Channel, or to refer to the portion of a river that...
		Micro Channel Architecture (in practice almost always shortened to MCA) was a proprietary 16- or 32-bit parallel computer bus created by IBM in the 1980s for use on their new PS/2...
	encarta.msn.com /Micro_Channel_Architecture.html (189 words)

	Micro Channel architecture (Site not responding. Last check: )
		Micro Channel architecture (in practice almost always shortened to MCA) was a proprietary 16 or 32-bit parallel computer bus created by IBM in the 1980s for use on their new PS/2 computers.
		Micro Channel was an attempt to address, once and for all, the problems that had come to plague the PC bus (later known as ISA).
		MCA was largely ignored, and with the introduction of PCI, MCA swiftly disappeared.
	www.xasa.com /wiki/en/wikipedia/m/mi/micro_channel_architecture_1.html (727 words)

	PIN-OUT: Micro Channel Architecture (MCA) Bus 16 bit
		Micro Channel architecture (in practice almost always shortened to MCA) was a proprietary 16 or 32-bit parallel computer bus created by IBM in the 1980s for use on their new PS/2 computers.
		Micro Channel was an attempt to address, once and for all, the problems that had come to plague the PC bus (later known as ISA).
		MCA was primarily a 32-bit bus, but the system also supported a 16 bit mode which was primarily to lower the cost of connectors and logic in Intel-based machines like the PS/2.
	www.technick.net /public/code/cp_dpage.php?altmenu=1&aiocp_dp=pinconbus_mca_16 (804 words)

	MCA: Micro Channel Architecture
		Micro Channel Architecture (MCA) is a proprietary 16 or 32-bit parallel computer bus created by IBM in the 1980s for use on their PS/2 computers.
		It is called a bus architecture because it defines how peripheral devices and internal components communicate across the computer's expansion bus.
		MCA is no longer used in new computer designs.
	www.javvin.com /hardware/MCA.html (55 words)

	Method and apparatus for multilevel bus arbitration - Patent 5404538
		The Micro Channel (TM IBM Corporation) architecture or MCA is an IBM proprietary backplane communications protocol used in the PS/2 and RS6000 family of computers to allow I/O adapters to communicate with a host processor or other I/O adapters.
		Even though there are numerous MCA interface chips which have been developed, both within and outside of the IBM Corporation, to support the Micro Channel protocol, none of them allows selection between arbitration levels when competing for a communications bus.
		The Micro Channel architecture employs a central arbitrator control point according to Micro Channel Architecture published in November of 1989 which is incorporated herein by reference.
	www.freepatentsonline.com /5404538.html (2830 words)

	MICRO CHANNEL BUS ARCHITECTURE
		MCA (micro channel architecture), architecture Microcanal (micro channel architecture).
		MCA (micro channel architecture), μικροκαναλική αρχιτεκτονική (micro channel architecture), αρχιτεκτονική μικροκαναλικής αρτηρίας (micro channel architecture).
		MCA1 (micro channel architecture), architettura Micro Channel (micro channel architecture), architettura MCA (micro channel architecture).
	www.websters-online-dictionary.org /definition/english/mi/micro+channel+bus+architecture.html (102 words)

	Please title this page. (Page 1)
		After the channel is granted to the highest-priority requester, that requester continues to drive its arbitration level on the bus.
		Channel Ready: This signal is normally active (ready) and is driven inactive (not ready) by a slave to allow additional time to complete a channel cycle.
		Channel Reset - signal is generated by the system logic to reset or initialize all adapters at power-on or when a low voltage condition is detected.
	www.ece.unh.edu /courses/ece707_4/mca.html (4892 words)

	MICRO CHANNEL ARCHITECTURE
		MCA is not compatible with either EISA or XT bus architecture so older cards cannot be used with it.
		MCA (micro channel bus architecture), architecture Microcanal (micro channel bus architecture).
		MCA (micro channel bus architecture), μικροκαναλική αρχιτεκτονική (micro channel bus architecture), αρχιτεκτονική μικροκαναλικής αρτηρίας (micro channel bus architecture).
	www.websters-online-dictionary.com /definition/english/Mi/Micro+Channel+Architecture.html (181 words)

	MCA Pinout, Micro Channel Architecture, IBM PC Bus pinout
		The pinout for the MCA bus is shown in the table below; with the 'A' and 'C' connectors located on the component side of the board and the 'B' and 'D' connectors located on the circuit side of the board [back-side].
		The MCA interface is obsolete and should not be used for new designs.
		The MCA bus uses the J1 A/B rows, and J2 [C/D rows] connectors.
	www.interfacebus.com /IBM_MCA_PinOut.html (377 words)

	Why MCA?
		The primary reason there has not been a perceived advantage to the Micro Channel so far, is that it was designed for a multitasking environment, and most end-users have utilized it in a single-tasking manner.
		Also, although the Micro Channel adapters contain only 60% of the surface area of AT adapters, the use of SMT allows both sides of the card to be used, making it equivalent to 120% of the surface area of an AT card using pin-in-hole mounting.
		The Micro Channel, by comparison, allows up to fifteen DMA devices to be installed, up to eight of which can be transferring at the same time, at burst mode transfer rates, through eight 32-bit DMA channels.
	www.gilanet.com /Ohlandl/config/Why_MCA.html (2547 words)

	Smart Computing Encyclopedia Entry - Micro-Channel Architecture (MCA)
		Unfortunately for IBM, the advanced design of MCA was not a great benefit in 1987, when most computers were not powerful enough to push the ISA architecture’s limits.
		In addition, the MCA interface was not compatible with ISA (the arrangement of pin connectors was different and more compact), so cards were not interchangeable.
		These issues, and the fact that the architecture was proprietary (and expensive to license), prevented MCA from ever gaining wide acceptance.
	www.smartcomputing.com /editorial/dictionary/detail.asp?searchtype=2&DicID=18187&RefType=Encyclopedia&guid= (274 words)

	Expansion Slots
		Micro Channel Architecture (in practice almost always shortened to MCA) was a proprietary 16- or 32-bit parallel computer bus created by IBM in the 1980s for use on their new PS/2 computers.
		The Extended Industry Standard Architecture (in practice almost always shortened to EISA and frequently pronounced "eee-suh") is a bus standard for IBM compatible computers.
		It was announced in late 1988 by PC clone vendors (the "Gang of Nine") as a counter to IBM's use of its proprietary MicroChannel Architecture (MCA) in its PS/2 series.
	www.cseced.org /AplusCert/Hardware/Expansion/ExpansionSlots.html (1086 words)

	MICRO CHANNEL ARCHITECTURE - Definition
		MCA is not compatible with either eisa or xt bus architecture so older cards cannot be used with it.
		As with the rom bios in the first ibm pcs, figuring out the Micro Channel's secrets has been an arduous task of reverse engineering ever since the PS/2 line was announced.
		Consequently, the MCA has never become as wide spread as the competing eisa standard.
	www.hyperdictionary.com /dictionary/Micro+Channel+Architecture (86 words)

	Glossary of computer communications acronyms and terms.
		This computer architecture, developed by IBM, allows 16 bits of data at a time to flow between the motherboard circuitry and adapters on the ISA bus.
		Developed by IBM for its desktop computers, MCA was an improvement, but Its proprietary nature discouraged other manufacturers, and IBM has dropped it from their systems.
		A T1 line consists of 24 channels, each of which supports a rate of 64 Kbps and can often be individually leased as "fractional T1" lines.
	www.quadron.com /speed/speed.html (1552 words)

	Development and Testing of Microchemical Separations (Liquid-Liquid Separations)
		Micro chemical separations systems offer a flexible platform in which to perform waste treatment and chemical processing.
		The microchannel architecture to be used for solvent extraction consists of thin channels separated by porous contactor plates.
		The model is two-dimensional with three different regions for the two flow channels and the contactor plate.
	www.pnl.gov /microcats/aboutus/research/separations.html (775 words)

	Micro Channel Linux Home Page (Site not responding. Last check: )
		To maintain a core chunk of the Linux kernel like the MCA patches, you really need to be able to follow the various kernel development mailing lists, try out most of the new 2.1.x kernels as Linus releases them, and integrate all the various patches people send you.
		The MCA Linux discussion forum is going strong, and it's probably the best place to ask questions at the moment.
		MCA Linux has been around for a while now (I've seen datestamps back to 1994, or kernel version 0.99).
	www.dgmicro.com /mca (5126 words)

	[No title]
		The SIO instruction is initiated if both the subchannel and device are available, and the channel is available or the interruption-pending state and errors have not been detected.
		Test Channel (TCH): Tests whether the channel is operational or not, if it is operating in burst mode, and has a any pending interrupt requests.
		This could be done to free a selector channel for a higher-priority operation, or to provide real-time control on a multiplexor channel.
	www.academic.marist.edu /~jzbv/architecture/Projects/S2002/BusArb/BusArbitration.ppt (1093 words)

	Lloyd Borrett - Computing - Articles - IBM's Micro Channel Architecture
		Once the decision to produce a new system architecture was made, the next stage was to compile a list of priorities that would determine what features actually got used:
		Only a very small proportion of today's computer users have experience with the mini and mainframe multi‑environment factors that are incorporated in the PS/2 Micro Channel Architecture.
		Now that they have begun to see the problems that the coming multi‑environment software solutions cause they are changing their tune.
	www.borrett.id.au /computing/art-1989-03-01.htm (930 words)

	Lloyd Borrett - Computing - Articles - IBM's Micro Channel Architecture
		The PS/2 model 30 used the familiar AT style bus and the models 50, 60 and 80 used the new Micro Channel Architecture (MCA).
		The problem that has dogged IBM ever since is that but a few existing and intending PC users are able to understand the concepts of MCA, and that almost no hardware add‑ons and software applications have been created to exploit the performance benefits of MCA.
		A system architecture designed to meet the need for improved reliability, data integrity, higher performance, and error recovery in a multi‑environment.
	www.borrett.wattle.id.au /computing/art-1989-03-01.htm (930 words)

	Spartanburg SC \| GoUpstate.com \| Spartanburg Herald-Journal (Site not responding. Last check: )
		Industry Standard Architecture (in practice almost always shortened to ISA) was a computer bus standard for IBM compatible computers.
		The XT bus has four DMA channels, of which three are brought out to the expansion slots.
		The AT bus architecture is an 16-bit version of the ISA bus first in the IBM PC/AT.
	www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=Industry_Standard_Architecture (683 words)

	HotBot Web Search for mca
		Develops, promotes and enforces high standards of marine safety to minimize loss of life, to respond to maritime emergencies 24 hours a day,...
		MCA Inc., a now defunct company (originally called Music Corporation of America) and its subsidiary companies...
		The MCA currently has an exciting opportunity for an experienced Curator to work within its Artistic Programming team.
	www.hotbot.com /inderelated10index.php?query=mca (172 words)

	Computer Knowledge - MCA
		The first thing you notice about the MCA bus is its connector.
		MCA also supported a 16-bit I/O; increasing the nunber of devices that could be addressed.
		MCA also introduced an effective plug-and-play system with its programmable option select feature.
	www.cknow.com /ckinfo/m/MCA-MicroChannelArchitect.html (301 words)

	Micro Channel Architecture (MCA) Bus
		It in fact did this with ISA as well; however in 1981 IBM could afford to flex its muscles in this manner, while by this time the clone makers were starting to come into their own and weren't interested in bending to IBM's wishes.
		These two factors, combined with the increased cost of MCA systems, led to the demise of the MCA bus.
		With the PS/2 now discontinued, MCA is dead on the PC platform, though it is still used by IBM on some of its RISC 6000 UNIX servers.
	www.pcguide.com /ref/mbsys/buses/types/olderMCA-c.html (518 words)

	Exabyte Certifies LSI Logic''s 2 Gigabit Fibre Channel Host Bus Adapter - Tandberg Data, formerly Exabyte
		The LSI44929 is the industry's only dual channel HBA designed in the low profile PCI form factor for rack-mount applications and produces over 75,000 I/Os per second using both channels.
		The architecture, based on industry standard ARM® processor technology, has the unique feature of having the same device driver that supports both Ultra320 SCSI and Fibre Channel, eliminating the need to develop, install and qualify separate device drivers for each physical interface.
		LSI Logic considers its Fusion-MPT architecture to be the fastest, most efficient and versatile architecture implemented in high performance I/O controllers today.
	www.exabyte.com /company/press/display.cfm?id=1019 (791 words)

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