Microsoft KB Archive/103883: Difference between revisions
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= <span id="KB103883"></span>Overview: | = <span id="KB103883"></span>Overview: "Local" I/O Operation = | ||
Latest revision as of 09:28, 20 July 2020
Article ID: 103883
Article Last Modified on 7/30/2001
This article was previously published under Q103883
SUMMARY
LOCAL I/O OPERATION
When an application requests I/O services, the underlying operating system calls device driver software that is resident in BIOS on most MS-DOS PCs. Device driver software is written to communicate with the device controller card, and can thus forward the I/O request to firmware that is resident on the controller.
The device controller then provides the required control signals to the device.
Keywords: KB103883
