Version 1.0 of the Serial, Parallel I/O board features RS232 up to 19.2K, 24 pins of I/O on the 8255 PPI, 8 bits of home-brew output or input, and a predecoded expansion bus for off-board playground. The documentation is in progress and draft versions have been uploaded to the documentation page. So far there are a couple of mistakes, e.g., PC6 and PC7 are transposed on the J5 header.
