Hi I've ported the changes (Julian Skidmore's mod) to the IC 3.1 pcode source code: (available from ftp://newtonlabs.com...ode31.exe) But I don't have anywhere outside a corporate firewall to put the files (a new pcode_hb.s19 and a modified lib_hb.c (...) (27 years ago, 21-Jan-98, to lugnet.robotics.handyboard)