Got a good dose of Sole caffine, IRC, email, and conversation. Hacked on a user-space version of a serial port driver for an Amptek MCA8000a (www.amptek.com) and, apparently, was able to successfully send my first few dozen bytes to it. Yey! It has an ugly (IMHO) and unusual hardware flow control design which uses the RTS, DSR, and DTR lines for *every* byte sent. Yuk.
Worked from remote on getting my accesspoint reconfigured for my trip.