Hello, I installed the uVision2 application and I bought an evaluation board for XC16x. I configured normally the ide and I used "On-Chip Flash:XC16x Board". The communication between computer and board is LPT1 based. The build tag results are: Here all it is ok... ---------------- Build target 'On-Chip Flash: XC16x Board' compiling Blinky.c... assembling START_V2.A66... linking... creating hex file from "Blinky"... "Blinky" - 0 Error(s), 0 Warning(s). -------------------- From here, with Load button: --------------------- Load "C:\\Keil\\C166\\EXAMPLES\\Boards\\Infineon XC16Board\\Blinky" Erase Sector with Address 0xC00000 Erase Done Program Sector with Address 0xC00000 Program Done Verify Flash content Content mismatch at: C00000H (Flash=00H Required=FAH) ---------------------- What is wrong ? And another thing: When I try to Erase flash, with menu command (Flash->Erase), an error occurs: "Error: Flash Erase failed - Command not supported". What could be wrong ? Thank you for help. Radu Cosoveanu. Email: radu@elinktelecom.ro