ISA bus< - CompWisdom

ISA bus< - CompWisdom

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ISAb> bus - definition of ISAb> bus in Encyclopedia

Industry Standard Architecture (in practice almost always shortened to ISAb>) is a bus standard for IBM compatibles introduced in 1984 that extends the XT bus architecture to 16 bits.
System manufacturers often shield customers from the term 'ISAb> bus', referring to it instead as the legacy bus (see legacy system).
XT bus architecture - the bus that preceded ISAb>

http://encyclopedia.laborlawtalk.com/ISA_bus (263 words)



An illustrated Guide to I/O-buses

The other problem with the ISAb> bus is the lack of intelligence.
The problem with the ISAb> bus is twofold:
The ISAb> bus uses a lot of time for every data transfer, and it only moves 16 bits in one operation.

http://www.karbosguide.com/hardware/module2c2.htm (1020 words)



The I/O Bus

However, on an ISAb> bus the two are logically interconnected.
The ISAb> bus interface is simple and cheap, but it requires the user to set the IRQ, either with physical switches on the card or through some kind of setup configuration utility.
Although the ISAb> bus may be ten years old, it remains a perfectly reasonable option for devices that do not require highest performance.

http://sophia.dtp.fmph.uniba.sk/pchardware/bus.html (3749 words)



Information about the computer BUS

In 1993, Intel and Microsoft introduced a PnP ISAb> bus that allowed the computer to automatically detect and setup computer ISAb> peripherals such as a modem or sound card.
The EISA bus provided 32-bit slots at an 8.33 MHz cycle rate for the use with 386DX, or higher processors.
A computer bus is a method of transmitting data from one part of the computer to another part of the computer.

http://www.computerhope.com/help/bus.htm (1086 words)



Writing EISA and ISAb> Bus Device Drivers

Computer systems that adhere to the ISAb> use the ISAb> bus.
The ISAb> bus support code uses the same data structures that the EISA bus support code uses.
For the ISAb> bus, assignment of the memory address space is done through the use of the ISAb> configuration (ISACFG) utility.

http://www.rcnp.osaka-u.ac.jp/unix/DOCUMENTATION/HTML/AA-Q0R6C-TET1_html/eisabus3.html (1299 words)



PC bus systems

There is no doubt that the ISAb> bus was not technically exceptional by today's standards, however, it exceeded the requirements of most users in 1984 and IBM's dominance of the mass computer market with the AT led to mass adoption of the ISAb> bus by both peripheral board manufacturers and clone PC makers.
Bus master support in the EISA could be described as complete as opposed to that provided in the ISAb> bus.
One of the most important points to note regarding the MCA bus was that it was not backwards compatible with the ISAb> bus (as the ISAb> bus had been with the XT bus).

http://www.csn.ul.ie/~stephen/buses.html (7161 words)



isa_bus description

The gate is an essential component and is there to protect the ISAb> bus from being driven at the wrong time.
The design for an input port is similar to the design for an output port with the exception that you need an 8-bit tri-state gate to buffer the data from the IO device to the ISAb> bus.
The purpose of this web page is to introduce you to the PC ISAb> bus and to show you how to do simple IO designs using this bus.

http://ece.wpi.edu/~wrm/Courses/EE3803/Labs/isa (836 words)



Quatech ISAb> Bus Overview

This "modern" ISAb> bus emerged in 1984 when it became clear to IBM developers that the advances made on the processor front had rendered the XT bus archaic.
However, the ISAb> bus has come a long way since 1981, and its modern incarnation is much better suited to the PCs we use today and the applications we run on them.
Quatech has solved this problem for the ISAb> bus by developing a series of drivers which allow multiple devices to share the same interrupt.

http://www.quatech.com/support/comm-over-isa.php (1001 words)



' + pPage + '

Two versions of the ISAb> bus exist, based on the number of data bits that can be transferred on the bus at a time.
ISAb>, which is an acronym for Industry Standard Architecture, is the bus architecture that was introduced as an 8-bit bus with the original IBM PC in 1981 and later expanded to 16 bits with the IBM PC/AT in 1984.
This bus is used to transfer data between the CPU and the main system bus, for example, or between the CPU and an external memory cache.

http://cma.zdnet.com/book/upgraderepair/ch05/ch05.htm (11750 words)



ISAb> bus ðàñïèíîâêà @ pinouts.ru

On the ISAb> bus, the DMAC is programmed to use fixed priority (channel 0 always has the highest priority), which means that channel 0-4 from the slave have the highest priority (since they connect to the master channel 0), followed by channels 5-7 (which are channel 1-3 on the master).
Unlike the SA bus, the LA bus is not latched, and is not valid for the entire transfer cycle (on most computers).
The AT version of the bus is upwardly compatible, which means that cards designed to work on an XT bus will work on an AT bus.

http://pinouts.ru/data/ISA.shtml (4136 words)



PC KITS-tutorial page (ISAb> BUS)

On the contrary the ISAb> BUS outputs a 20 bit address bus and a 8 bit data BUS.
Note that INTR and INTA are not present in the ISAb> bus, this signals are only used for the uP and the 8259A.
The DMA (Direct Memory Access) controller borrows the address bus, the data bus and the control bus from the system and transfers a programmed series of bytes from a fast I/O device to the memory.

http://www.ctv.es/pckits/tISA.html (1206 words)



ISAb> Bus

Data Translation has a series of ISAb> bus boards and accompanying software drivers.
This manual "fiddling" can be tricky, and the 16-bit ISAb> bus has more limited performance than the 32-bit PCI bus.
BSOF Software has several low-cost, general-purpose ISAb> bus boards.

http://www.mvps.org/rgrier/isabus.htm (533 words)



ISAb> Bus

Due to the limitations of the ISAb> bus, they are extremely slow by today's standards, and not suited to the use of a graphical operating system like Windows.
Unfortunately, most PCs that use ISAb> video cards use them because the ISAb> bus is all the motherboard supports.
The ISAb> bus is the standard (slow) I/O bus still used in virtually all PCs today for low-bandwidth peripherals such as modems.

http://www.pcguide.com/ref/video/ifISA-c.html (379 words)



PC ISAb> Bus Quadrature Encoder Card

This is shown in the schematic where pin 2 on the 7266 is wired to the ISAb> bus at b30.
One possible (and common) confusing point with ISAb> bus circuits is the use of the prefix "A".
The ISAb> pins a24, a25 and a26 serve as its three inputs and depending on their values, will yield one 8 possible outputs.

http://www.boondog.com/tutorials/7266/7266.htm (2010 words)



PC104 to ISAb> Adapter - PCM-ISAb>-16

Bus Architecture - The PC/104 Bus is a compact, embedded version of the ISAb> bus.
The PCM-ISAb> is a low cost adapter that links the PC/104 bus to ISAb> bus boards.
PC/104 Bus to ISAb> Bus adapter with four 50-pin cables

http://pc104.winsystems.com/products/pc104/pcmisa.html (339 words)



ISAb> Active Bus Extender

ISAb> Bus Active Extender with on-board digital and analog I/O.
This is a Hot Swap ISAb> extender as well as the controller for the PCIAX type extender cards.
As an ISAb> Hot Swap extender card it controls the On-Off of the voltages and the signals to the UUT, and is capable of measuring system voltages and the UUT voltages and currents.

http://www.twinhunter.com/Products/ISA/ISA160.html (440 words)



Sensoray STD to ISAb> Bus Adapter

All STD bus I/O boards are mapped into a 256-address window in the ISAb> I/O space.
The 422 is a bus-to-bus adapter that extends the ISAb> bus of a PC to a card rack of STD bus I/O boards.
The window may changed via a PLD on the ISAb> card.

http://www.sensoray.com/html/422data.htm (225 words)



AMIDiag - Industry Standard PC Diagnostics

On PCs, the old ISAb> bus is being replaced by faster buses such as PCI.
This is a bus that connects all the internal computer components to the CPU and main memory.
A standard bus (computer interconnection) architecture that is associated with the IBM AT motherboard.

http://www.amidiag.com/support/glossary.cfm (11660 words)



ISAb> bus autoconfiguration

The ISAb> bus standard has fewer facilities for autoconfiguration than other supported bus architectures.
This article summarizes the special steps that must be taken to support ISAb> and other non-autoconfigurable bus architectures within the autoconfiguration schemes of UnixWare 7 and SCO OpenServer.

http://docsrv.sco.com/HDK_concepts/ddT_isa_autoconfig.html (52 words)



ACCES - PCI-ISAb> Bus Expansion Kit Page

The kit is ideal if you have existing software for an application and buy a new computer with no ISAb> slots to duplicate the system, as long as your ISAb> cards do not use DMA or Bus Mastering.
ACCES's PCI to ISAb> Bus Expansion Interconnect Kit, model PCI-ISAb>, allows you to expand your PCI Personal Computer system without timing or noise problems.
It provides hardware transparent, active bus extension and conversion between a host computers PCI slot and a remote expansion chassis ISAb> backplane.

http://www.acces-usa.com/go.cgi?p=../bus_exp/pci-isa.html (376 words)



ISAb> to ISAb> Bus Expander Card Set

The 5916 provides a completely software transparent active AT ISAb> bus extension between the host PC and the ISAb> expansion chassis.
The 5916 PC ISAb> bus expander kit allows you to easily expand the number of available ISAb> card slots in any host PC.
Click here for PCI to ISAb> bus expansion.

http://www.dactest.com/catpages/5916ISA.htm (263 words)



applicom cards on ISAb> bus

Effective November 08th 04, applicom cards with ISAb> bus factor will be discontinued.
All applicom cards on ISAb> bus form factor
Please, Consult WSE to study such ISAb> to PCI migration feasibility.

http://www.applicom-int.com/us/products/applicom/isa.htm (446 words)



ipedia.com: Computer hardware Article

computer bus controllers (parallel, serial, USB, Firewire) to connect the computer to external peripheral devices such as printerss or scannerss

http://www.ipedia.com/computer_hardware.html (267 words)



Amazon.com: Books: Embedded PCs ISAb> Bus, The

Provided is an advanced and comprehensive compendium of practical techniques for bare metal ISAb> bus projects.
Customers interested in Embedded PCs ISAb> Bus, The may also be interested in
Buy this book with ISAb> and EISA Theory and Operation by Edward Solari today!

http://www.amazon.com/exec/obidos/tg/detail/-/157398017X?v=glance (764 words)



ISAb>.HTM

ISAIX16 is a Bus Isolation Extender that allows user to test the 16 bit ISAb> add-on boards quickly without having to power the system down each time.
The dimension is 6.7" L x 1.1" H. is a right angle extender that is capable of having a standard ISAb> 16 bit connector mounted on B side (solder side) or A side (component side) of the board.
It features 5 ISAb> slots, which can be ordered in many combinations, for example -3A2B means 3 slots on A-side and 2 slots on B-side; -3B2A means 3 slots on B-side and 2 slots on A-side.

http://www.adexelec.com/isa.htm (378 words)



Backplanes

20-slot PICMG Bus Bridged Backplane, 17 PCI / 3 ISAb> / 1 PICMG
20-slot PICMG Bus Bridged Backplane, 18 PCI / 1 ISAb> / 1 PICMG
PCISA Bus Passive Backplane- 1 PCISA / 2 PCI

http://www.voxtechnologies.com/backplanes (1949 words)



Writing EISA and ISAb> Bus Device Drivers

This manual provides information for systems engineers who write device drivers for the EISA and ISAb> buses.
The manual describes EISA/ISAb> bus- specific topics including EISA/ISAb> bus architecture and data structures that EISA/ISAb> bus device drivers use.
It might not display properly for browsers other than Netscape.

http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-Q0R6C-TET1_html/TITLE.html (235 words)



Controlled.com - ISAb> Bus Products Vendors News

ISAb> Bus Control-Related Products, Vendors, News, FAQ, More!
Quatech Releases Windows 2000 Support for Serial ISAb> Boards
PC104 bus, PCI bus, VXI bus, VME bus, STD bus

http://www.controlled.com/isa (100 words)



RADICOM: ISAb> Bus Data/Fax/Voice Modem

The 336i-AC/2 and 560i-AC/2 modem family are full-featured, self-contained data / fax /voice modems, designed for ISAb> Bus applications.
DOS, Windows 3.1, Windows 95 or NT One available ISAb> slot
The modems transmit high-speed data rates for up to 56 kbps, and fax at 14.4 kbps.

http://www.radi.com/isabus2.htm (240 words)



Controlled.com ISAb> Bus FAQ

How to make your own ISAb> Bus Card
EDN Article on Slot 1, AGP, PCI, and USB buses
Don't forget to see our Suggested Reading Material

http://www.controlled.com/isa/faq.html (34 words)

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Topic: ISA <b>bus<

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