HCS II XPRESS bytecodes, describing the
format and composition of a compiled XPRESS program. (See Appendix D of
the XPRESS Command and Reference Manual) (by Mike Baptiste)
Host bytecodes, which are
used to send and receive data from the HCS II SC's serial port.
(by Mike Baptiste)
Mike Baptiste's PL-Link fix. This helps keep
the PL-Link reset properly in the event of a power glitch. It also acts
as a watchdog should the unit hang for any reason.
Ancient Circuit Cellar BBS messages which give a lot
of info on programming and interfacing with the HCS II, as well as background
info for early peripheral boards. It's also a very useful source of
analog and digital I/O interfacing.