Windows 3.1 Device Drivers (ddag31qh.hlp) (Table of Contents; Topic list)
Communication Drivers
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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