Thanks Geoff,
I assume I bought those things before Arduino came along. I bought several other such things as well (stamp, site player, webcontrol).
But like you say, Arduinos are very inexpensive and there is immeasurable support for them. Makes little sense to try to resurrect this stuff I bought nine years ago with parallel and serial ports that are no longer supported on the computers I have.
I am wondering whether there is a chance the ISP-10 parallel adapter could access the full memory of the Mega 2560. If it could, I would find a parallel port card for a PC I have.
Frank