Hi, I am programming on the Cypress FX2 (8051 compatible) and I have a problem that my variables declared in a c-function do not get initializes properly. My main program is written in assembly, since I need to have an ISR, which is very short and i want to have full control over what the proc. does during that ISR. I have to include a c-file in my project, which initializes a bunch of registers for a special interface on my USB chip. The problem is that the linker does not include that data segment. my data is defined this way: const char xdata WaveData[128] = {128 bytes} do i need to write an initialization function in C, which moves all that data or is there a way for force the inclusion of that data segment? thanks, Greg ps.: sorry if i am not clear.