I will post the Pronto hex tonight. Thanks for your help!

I have tried to contact Hitachi here in Sweden, but they haven't answered me yet. When I tried Hitachi in US and UK, they referred me to the Swedish office.

In the manual there are lots of RS-232 commands. I didn't understand all that much of it. Can they be of help in this matter?

I'm trying to program the European version of the original Pronto (the "940").