This board was designed by Paul Wilcox-Baker. It was one of the first serial boards to have programmable Baud rates.  This was done externally to the UARTs with programmable registers and multiplexors to select the different clocks.  The 8251 UARTS were the cheap back then,  later UARTS included their own ability to change Baud rate.

This page was last modified on 02/23/2022