I'm Dave!
I am a Control Engineer in "real" life, but the MTX takes up most, if not all, of my spare time.
I maintain a small website, the majority of which is dedicated to all things Memotech :-
http://primrosebank.net/computers/mtx/mtx512.htm
I am trying to collate all of the available information on the Memotech MTX and related equipment - if you have anything that is not already posted on the website, I would appreciate a copy please.
I have one or two pieces of Memotech hardware

http://primrosebank.net/computers/mtx/mtxcollection.htm
I bought my MTX512 in late 1983. Having used a system at work that ran CP/M 2.2, when Memotech brought out the CP/M based FDX unit, I just had to have one! At the time, I was full of good intentions, such as learning Z80 assembly language (with Microsoft MASM ) and "C" (with the Small "C" Compiler). I also had the "latest" business software - NewWord (Word Processor), Supercalc (Spreadsheet) and the ubiquitous dBaseII (Database). I'm sorry to say though, that I did not use the tools to their best effect and ended up using the system to play games most of the time

regards
Dave