First, get a book on CP/M (the operating system used by the Kaypro 10.)
If you need more detailed technical information or have trouble finding
a CP/M reference, send me e-mail.
Essentially, the Kaypro10 is a 4MHz Z-80 based CP/M machine with a 400Kb
floppy and a hard disk (I think.) It was often used for word processing,
usually with MicroPro's WordStar.
It has a *slow* modem, a serial port, and a parallel port.
I'm working on compiling some information on the Kaypro so it can be
emulated; once I do this, emulators may serve as "active documentation"
for this fine but somewhat obsolete line of computers.