Help PicList, I have the DT-206 / DT-204 combination. I am using the recomended software Atmel 89C2051 Programmer V2.1 by Peter Averill with the newer file clpv21.exe dated 18-8-98. The PGMR will perform a blind program and successfully run the program, however it will not perform any type of verify or read functions. I have tried configuring the parallel port different ways SPP, EPP, ECP, all with no sucess. My computer is a pentium 166 (K6-166). The hardware all functions fine with the DT-001 / PIC combination. Has anyone else experienced this problem? I would appreciate any suggestions / help anyone can offer Thanks Don _________________________________________________________ DO YOU YAHOO!? Get your free @yahoo.com address at http://mail.yahoo.com