I have updated my midi to din sync convertor page on my web site, with source code and two different PCB designs. This is a PIC 12C508 based convertor, that needs no power supply, and only uses 2 sockets, 2 8 pin ICs, 6 resistors and 1 cap. See http://www.octavo.demon.co.uk/colinf/home.htm - 'Mini Midi to Din Sync 24 Convertor' Colin f