driver provides support for NS8250-, NS16450-, NS16550-, ST16650-, ST16C654-, and TI16750-based EIA RS-232C (CCITT V.28) communications interfaces.
The NS8250 and NS16450 have single character buffers, the NS16550 has a 16 character buffer, while the ST16650 has a 32 character buffer, and the TI16750 has a 64 character buffer.
Input and output for each line may be set to one of following baud rates; 50, 75, 110, 134.5, 150, 300, 600, 1200, 1800, 2400, 4800, 9600, 19200, 38400, 57600, or 115200, or any other baud rate which is a factor of 115200.
Data loss is possible on busy systems with unbuffered UARTs at high speed.
The name of this driver and the constants which define the locations of the various serial ports are holdovers from DOS