I purchase the multichip programmer from Talking Electronic. Because my PC do not have the 9 pins serial port. I am using the modem serial com port 2. The modem port is 24 pins and it parallel out the 9 pins connector. I connect the modem parallel out 9 pin female connector to the multichip 9 pins male connector. I start to try up some project. I use IC-PROG 1.05. When I burn the PIC 16F84A, the error message is Programming Failed at Code Address 0000h ! I try to erased all, it is successful. When I check by Read All, the data show all 0000 at address 0000h. But, when I do blank check, the error message is Device not blank at address 0000h ! Can you help advice what shall I do to test out. Thanks. James -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads