Hello, I work with an EASY UTAH board with C161U microprocessor and a Flash ST M29F040B 90K1 on target. I'd like to have my program loaded on Flash but executed on RAM. First I work with the blinky example to check the well functionning. When I load the blinky program to flash with the Flash Tool provided by Infineon, I effectively see that the led switch well. For executing the program in RAM, I wrote two different applications, one with the startup code and a copy routine for copying code from flash (segment 1) to RAM. I load this startup application in Flash at segment 0. The second program is the blinky one (without startup code) that I load in Flash at segment 1. When I reset the board, I could observe on oscilloscope a lot of access to flash (CS0) and RAM (CS1). But the led doesn't switch. In the startup code I specify CS1/RAM from 0x80000 with a size of 4K. I am really new to this so I don't know if the program is freeze doing the copying loop from flash to RAM, or if the execution is wrong. Someone have an idea of what is happening? Just to say that I don't want to use the application note 138 because I think this is not the solution to my problem. Effectively I want all my program executed in RAM and not only the critical routines. If someone have an idea or have same problems, I will be very grateful to have some help and to understand what I'm doing wrong. Thanks Regards