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The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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The Microsoft Windows communications driver provides a set of functions that
Windows can use to open communication ports, set communication
configurations, read and write characters, and retrieve error and status
information. This topic describes the communication-driver functions.
 
The following topics provide useful information about the communication
driver:
 
◄About the Communications Driver►
◄Base Address and IRQ Selection►
◄16550a UART FIFO Buffer►
◄CommWriteString and EnableNotification Functions►
◄Communication Escapes►
◄Baud Rate Indexes►
◄Communication Functions and Structures►
 
 
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