Hi piclisters. I'm trying to make a control program for an aplication based on a 16C73, and need to put together a low level, interrupt based "operating system" (with rs2 bus communication, LCD control, knobs, etc.), and a high level control routine. The low level routines are already written in assembler, and I want to write the high level in C. I work in MPLAB, always in ASM, so I have no idea how to put this thing together. Any ideas? Thanks.