I have a new development board with an ARM from Samsung (S3C3410X) which is not supported by Keil. That ARM device is big endian with a 40MHz clock and internal RAM from 0x07FF0000 to 0x07FF0FFF (4 KB). I've created a new device in the device database using a generic ARM7 base and the following parameters : ------------- CPU=IRAM(0x7FF0000-0x7FF0FFF) CLOCK(40000000) CPUTYPE(ARM7TDMI) EBIG SIM=SARM.DLL("") DARM.DLL("") MON=SARM.DLL("") TARM.DLL("") -------------- When entering in debug session, the following message appears "Couln't stop ARM device! Please check the JTAG cable" (it is probably caused by TARM.DLL). When I select an another device (for example Atmel AT9163200 which is a little endian), then starting a debug session, uVision can be connected to the device. Can someone help me? Julien