QX-10 / terminal software

Morning all, I thought I'd try and get the ol' Epson QX-10 running as a dumb terminal. AFAIK, there's nothing on the 'standard' set of disks to do this (e.g. valdocs has the 'mail' program which is aware of the serial port and which I think can talk via a direct link rather than a modem - but I think its functionality is all quite high-level and there's no 'terminal' mode). So... MEX looks like a possibility, and an overlay for the QX-10 seems to be available (although I'm not sure how much work is involved in merging them yet). Does anyone know of any other options[1] which will work with the QX-10's serial hardware? Or, does anyone happen to have a QX-10 enabled version of MEX archived already? [1] does CP/M abstract serial hardware into a set of common calls, or is that outside its scope? cheers Jules