>ARE there ANY in circuit emulators out there that WILL work with NT >4.0? If so, do they/it support source level debuggin with a "C" >compiler (such as CCS)? The Tech-Tools emulator should do just what you want. See http://www.tech-tools.com and ask there. It uses the serial port, so there should be no problem, although I've not tried it on mine. The current version goes to 57.6Kbps, so it really flies compared to the old stuff. Andy ================================================================== Andy Kunz - Montana Design - 409 S 6th St - Phillipsburg, NJ 08865 Hardware & Software for Industry & R/C Hobbies "Go fast, turn right, and keep the wet side down!" ==================================================================