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Hi ho, I would like to have some suggestions about the dealings with interrupts under gcc. I am new to gcc, so please be patient and start with Adam & Eva 8-)! (Formerly, I used hitech tools which support a special function type for interrupts.) What is the best way to handle the interrupt service routines? I really do not mean assembler for the interrupt routines itself ;-)! One possible solution. that I can think of, is to use somekind of a wrapper function written in assembler, which one and only function is to call the actual c-function. +--------------------------------+ m68k vector table | pointer to assembler function | +--------------------------------+ +-- assembler function -----+ | jsr c-function ----------|----+ | rte | | +---------------------------+ | | / +-- c-funktion -------------+ / | (do the interrupt); | < | return; | +---------------------------+ Another way would be to write a header and trailer for the c-function that clean up the stack. The header would fake the stack, i.e. it would put the status register on the stack. The trailer would then have an rte after it cleaned up the stack frame of the c-function. Well, both of this ideas are not really worked out. And I would prefer to here from someone that have experiences with interrupt handling for Motorolas venerable 68000. Ok - thanks in advance. Guido Pohl