ISA bus - CompWisdom
About us  |  Why use us?  |  Press  |  Contact us

 

Topic: ISA bus


Related Topics



  
 ISA bus - definition of ISA bus in Encyclopedia
Industry Standard Architecture (in practice almost always shortened to ISA) is a bus standard for IBM compatibles introduced in 1984 that extends the XT bus architecture to 16 bits.
The protocols also allows for bus mastering although only the first 16 MB of main memory is available for direct access.
System manufacturers often shield customers from the term 'ISA bus', referring to it instead as the legacy bus (see legacy system).
http://encyclopedia.laborlawtalk.com/ISA_bus   (263 words)

  
 An illustrated Guide to I/O-buses
The other problem with the ISA bus is the lack of intelligence.
The problem with the ISA bus is twofold:
The ISA 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 ISA bus the two are logically interconnected.
The ISA 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.
ISA is a 16-bit interface, which means that data can be transferred only two bytes at a time.
http://sophia.dtp.fmph.uniba.sk/pchardware/bus.html   (3749 words)

  
 Information about the computer BUS
A computer bus is a method of transmitting data from one part of the computer to another part of the computer.
In 1993, Intel and Microsoft introduced a PnP ISA bus that allowed the computer to automatically detect and setup computer ISA peripherals such as a modem or sound card.
When this bus was originally released it was a proprietary bus, which allowed only IBM to create peripherals and the actual interface.
http://www.computerhope.com/help/bus.htm   (1086 words)

  
 Writing EISA and ISA Bus Device Drivers
Computer systems that adhere to the ISA use the ISA bus.
The ISA bus support code uses the same data structures that the EISA bus support code uses.
For the ISA bus, assignment of the memory address space is done through the use of the ISA 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 ISA 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 ISA 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 ISA bus.
One of the most important points to note regarding the MCA bus was that it was not backwards compatible with the ISA bus (as the ISA 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 ISA 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 ISA bus.
The purpose of this web page is to introduce you to the PC ISA 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 ISA Bus Overview
This "modern" ISA 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 ISA 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 ISA 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 + '
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.
This bus is either a part of the processor bus itself, or in most cases is implemented separately by a dedicated chipset that is responsible for transferring information between the processor bus and the memory bus.
Two versions of the ISA bus exist, based on the number of data bits that can be transferred on the bus at a time.
http://cma.zdnet.com/book/upgraderepair/ch05/ch05.htm   (11750 words)

  
 ISA bus ðàñïèíîâêà @ pinouts.ru
On the ISA 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 (ISA BUS)
On the contrary the ISA BUS outputs a 20 bit address bus and a 8 bit data BUS.
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.
Note that INTR and INTA are not present in the ISA bus, this signals are only used for the uP and the 8259A.
http://www.ctv.es/pckits/tISA.html   (1206 words)

  
 ISA Bus
Data Translation has a series of ISA bus boards and accompanying software drivers.
This manual "fiddling" can be tricky, and the 16-bit ISA bus has more limited performance than the 32-bit PCI bus.
BSOF Software has several low-cost, general-purpose ISA bus boards.
http://www.mvps.org/rgrier/isabus.htm   (533 words)

  
 ISA Bus
Due to the limitations of the ISA 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 ISA video cards use them because the ISA bus is all the motherboard supports.
While it is possible that a high-end ISA card can be a decent performer if it has an advanced set of on-board acceleration features, in practice even a cheap PCI video card will generally outperform even a good ISA card, and by a lot.
http://www.pcguide.com/ref/video/ifISA-c.html   (379 words)

  
 PC ISA Bus Quadrature Encoder Card
The ISA pins a24, a25 and a26 serve as its three inputs and depending on their values, will yield one 8 possible outputs.
This is shown in the schematic where pin 2 on the 7266 is wired to the ISA bus at b30.
One possible (and common) confusing point with ISA bus circuits is the use of the prefix "A".
http://www.boondog.com/tutorials/7266/7266.htm   (2010 words)

  
 PC104 to ISA Adapter - PCM-ISA-16
Bus Architecture - The PC/104 Bus is a compact, embedded version of the ISA bus.
The PCM-ISA is a low cost adapter that links the PC/104 bus to ISA bus boards.
PC/104 Bus to ISA Bus adapter with four 50-pin cables
http://pc104.winsystems.com/products/pc104/pcmisa.html   (339 words)

  
 ISA Active Bus Extender
ISA Bus Active Extender with on-board digital and analog I/O.
This is a Hot Swap ISA extender as well as the controller for the PCIAX type extender cards.
JP2 - This 14 pin header is provided for some miscellaneous functions.
http://www.twinhunter.com/Products/ISA/ISA160.html   (440 words)

  
 Sensoray STD to ISA Bus Adapter
All STD bus I/O boards are mapped into a 256-address window in the ISA I/O space.
The 422 is a bus-to-bus adapter that extends the ISA bus of a PC to a card rack of STD bus I/O boards.
http://www.sensoray.com/html/422data.htm   (225 words)

  
 AMIDiag - Industry Standard PC Diagnostics
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.
A standard electronic interface used between a computer motherboard's data paths or bus and the computer's disk storage devices.
http://www.amidiag.com/support/glossary.cfm   (11660 words)

  
 ISA bus autoconfiguration
The ISA bus standard has fewer facilities for autoconfiguration than other supported bus architectures.
This article summarizes the special steps that must be taken to support ISA 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-ISA Bus Expansion Kit Page
The kit is ideal if you have existing software for an application and buy a new computer with no ISA slots to duplicate the system, as long as your ISA cards do not use DMA or Bus Mastering.
ACCES's PCI to ISA Bus Expansion Interconnect Kit, model PCI-ISA, allows you to expand your PCI Personal Computer system without timing or noise problems.
The PCI-ISA’s support for Memory on ISA cards is not documented.
http://www.acces-usa.com/go.cgi?p=../bus_exp/pci-isa.html   (376 words)

  
 applicom cards on ISA bus
Effective November 08th 04, applicom cards with ISA bus factor will be discontinued.
Please, Consult WSE to study such ISA to PCI migration feasibility.
All applicom cards on ISA bus form factor
http://www.applicom-int.com/us/products/applicom/isa.htm   (446 words)

  
 ISA to ISA Bus Expander Card Set
The 5916 provides a completely software transparent active AT ISA bus extension between the host PC and the ISA expansion chassis.
One of the cards in the set plugs into an open ISA slot in the host computer, while the other installs into an open ISA slot in the expansion chassis.
The 5916 PC ISA bus expander kit allows you to easily expand the number of available ISA card slots in any host PC.
http://www.dactest.com/catpages/5916ISA.htm   (263 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 ISA Bus, The
Provided is an advanced and comprehensive compendium of practical techniques for bare metal ISA bus projects.
Customers interested in Embedded PCs ISA Bus, The may also be interested in
Buy this book with ISA and EISA Theory and Operation by Edward Solari today!
http://www.amazon.com/exec/obidos/tg/detail/-/157398017X?v=glance   (764 words)

  
 ISA.HTM
The dimension is 6.7" L x 1.1" H. is a right angle extender that is capable of having a standard ISA 16 bit connector mounted on B side (solder side) or A side (component side) of the board.
It is especially designed to save valuable labor and time in production environment.
ISAIX16 is a Bus Isolation Extender that allows user to test the 16 bit ISA add-on boards quickly without having to power the system down each time.
http://www.adexelec.com/isa.htm   (378 words)

  
 Backplanes
6-slot ISA passive butterfly backplane with L: 3-ISA and R: 3-ISA slots
20-slot PICMG Bus Bridged Backplane, 17 PCI / 3 ISA / 1 PICMG
20-slot PICMG Bus Bridged Backplane, 18 PCI / 1 ISA / 1 PICMG
http://www.voxtechnologies.com/backplanes   (1949 words)

  
 Writing EISA and ISA Bus Device Drivers
This manual provides information for systems engineers who write device drivers for the EISA and ISA buses.
It might not display properly for browsers other than Netscape.
The manual describes EISA/ISA bus- specific topics including EISA/ISA bus architecture and data structures that EISA/ISA bus device drivers use.
http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-Q0R6C-TET1_html/TITLE.html   (235 words)

  
 Controlled.com - ISA Bus Products Vendors News
Quatech Releases Windows 2000 Support for Serial ISA Boards
PC104 bus, PCI bus, VXI bus, VME bus, STD bus
ISA Bus Control-Related Products, Vendors, News, FAQ, More!
http://www.controlled.com/isa   (100 words)

  
 RADICOM: ISA Bus Data/Fax/Voice Modem
DOS, Windows 3.1, Windows 95 or NT One available ISA slot
The 336i-AC/2 and 560i-AC/2 modem family are full-featured, self-contained data / fax /voice modems, designed for ISA Bus applications.
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 ISA Bus FAQ
How to make your own ISA Bus Card
Don't forget to see our Suggested Reading Material
EDN Article on Slot 1, AGP, PCI, and USB buses
http://www.controlled.com/isa/faq.html   (34 words)

  
 Isa Bus Controllers
Features: 16-bit ISA bus controller for passive color and active color TFT LCD displays of VGA (640x480), SVGA (800x600), XGA (1024x786) and EWS (1280x1024) resolutions.
Features: low cost, dedicated controller for color and monochrome passive LCDs replacing the standard ISA VGA video card; supports screen resolutions from 320x200 up to 640x480.
low cost, dedicated controller for color and monochrome passive LCDs replacing the standard ISA VGA video card; supports screen resolutions from 320x200 up to 640x480.
http://www.apollodisplays.com/isa_bus.php   (76 words)

  
 PCGuide - Ref - Older System Bus Types
PCGuide - Ref - Older System Bus Types
It seems that either your browser does not support frames, or you have them disabled.
Please read the Site Guide before using this material.
http://www.pcguide.com/ref/mbsys/buses/types/older_ISA.htm   (199 words)

  
 ISA Bus
Dual Rear Slot, PC Card Reader ISA PnP (Typ II/III)
Dual Front Slot, PC Card Reader ISA PnP (Typ II/III)
Other products and companies referred to herein are trademarks or registered trademarks of their respective companies or mark holders.
http://www.mpi.ch/item168.html   (73 words)

Compwisdom
 About us   |  Why use us?   |  Press   |  Contact us

 Copyright © 2006 CompWisdom.com Usage implies agreement with terms.