occam allows channel-like items to be placed on memory locations and IO addresses for hardware access. It would be useful for RMoX to be able to place a fake channel on an interrupt, so that the interrupt handler could just ALT across the channels; this would also make for efficient implementation of interrupts in CCSP.
In a language which supports call channels, a similar mechanism could be used for system calls via software interrupts -- which might be a nice way of doing system calls inside an occam VM for userspace RMoX programs.