On Tue, 30 Sep 2003, Stan Sieler wrote: THAT is rare. (The RC-20 is a wristwatch computer from early to mid 80's with an imitation Z80, touch screen, and serial port) It was never exported. Is your RC-20 working? The software in mine was all Japanese. I never could figure out how to tell the "World Clock" program that Honolulu was WEST of us. The cable is a three conductor ("stereo") "ultra-mini" (smaller than walkman). Ground, transmit, receive - I don't know pinout, but I may have it somewhere. I have a book for it, (that might have the cable pinout) that has a bunch of sample programs - fairly straightforward Z80 code, but all comments, messages, explanations, etc. are in Japanese. A friend, who I haven't heard from in 15 years, had one and needed to reload the software. In Japan she bought an accessory for it that had a ZIF socket and cable to the watch. She insisted that it was called a "ROM ROADER". (Katakana doesn't differentiate between R and L sounds) I don't think that I can dig it out before VCF, but I'll try. -- Fred Cisin cisin(a)xenosoft.com