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I/O - General Information

About IrDA | I/O Shields | USB Port | Serial Port | PS/2 Port |

 I/O Technology

What is I/O?

stands for input / o utput.  It refers to any operation or device whose purpose is to transfer data in and/or out of a computer.

Ultra I/O Chipset

Besides the various elements that Ultra I/O chipset incorporates as shown above, the chipset also supports ISA Plug, Play standard, and Windows 95 configuration register which can program each of the Ultra I/O chipset's logical devices such as I/O address, DMA channel, and IRQ channel.
The I2O Architecture (Intelligent I/O)
  • An I/O processor that is dedicated to handling I/O requests.A split-driver that features both operating system and device driver interfaces.
  • A peer-to-peer communications layer that will smooth out the communication between hardware devices.
I2O™ will soon be an important functional capability for servers as the leading Intel architecture-based server suppliers are now shipping products attached with the label "I2 O-Ready".

Aberdeen anticipates that the benefits users will capture from the use of I2O-compatible components in their PC servers are:
    Capability to increase the number of users (beyond current limitations) per server due to streamlined communications and increased bandwidth; Greater end-user productivity due to faster response time for data intensive applications that depend on strong bandwidth performance; Reduced total-cost-of-ownership because I2 O simplifies the installation and management of communications hardware and related drivers; Decreased operations time spent conducting systems backup/restore activities through optimized read/writes to the storage subsystems; Increased availability due to greater autonomy allowing I/O intensive activities to occur in parallel with application processing.
IO Architecture is intended to solve numerous system performance and system-management problems by:
    Off-loading the CPU (as much as possible) from communications I/O tasks balancing processing between application intensive (main CPU) and interrupt intensive (I/O processor) operations; Streamlining the interaction between the I/O subsystems (communications and storage) Providing a standard interface for I/O hardware to be managed by the operating environment
Executive Summary
Starting in 1996 and under Intel's leadership, the leading PC server hardware, software, and peripheral suppliers established the I2O Special Interest Group (I2O SIGTM). Quite simply, the CPUs in today's high-performance 4-way Pentium Pro-based systems are either spending too much time idly waiting for data to arrive or managing the I/O processes themselves.IS executives can find more information about the I2O SIG on its web site '' including a listing of the members of the special interest group and frequently asked questions about the architecture.

 About IrDA

What is the IrDA interface for?

IrDA stands for transmitting data via infrared light waves.  This technology is already implemented in over 300 million electronic devices including desktop, notebook, Palm PC's, printers, PDA's, Cellular phones, digital cameras, toys, watches, pagers and other mobile devices.  For more information you can go to

What is the IrDA header pin layout?
Pen 1 IR RX - receiving DATA
Pen 2 IR TX - transmitting DATA
Pen 3 IR +5V or VCC - power
Pen 4 GND - ground

NOTE:  Please refer to the specific motherboard User's Manual for an exact pin layout.

 What software and/or drivers do I need to use IrDA?
Software and/or drivers are supplied with the specific IrDA device you are using.  Please refer to the device's manufacturer for more information.

NOTE:  Win95, Win98, Win98se, WinME, Win2K and WinXP have built in generic drivers for IrDA.  For WinNT please go to

How do I setup IrDA communication with my Tyan motherboard?

First you will need an IrDA interface cable.  Tyan does not supply this cable.  You may purchase this cable from your local electronic retail store or online at  The part# you would need would be the IR210L.  This part# should work for most Tyan motherboards that support this function.  Secondly you will need to go into the Bios to the Integrated Peripherals or Chipset Features or Advanced Chipset Features (varies depending on Model of Tyan product you have) and set the following up correctly:

UART2 or COM2 Mode: IrDA
UAET2 or COM2 Duplex:  Half or Full

Finally install IrDA device software.  Please refer to the IrDA device and/or software manufacturer for operational instructions.

Note:  IrDA emulates COM2 so you will not be able to use COM2 when using your IrDA.