buserror/simavr — pull request #103 by distributed (2014-11-03 20:52:05+00:00)
Title: sim_io: do not overwrite _avr_io_mux_write in avr_register_io_write

After installing an _avr_io_mux_write in avr_register_io_write, the w.param and w.c values were overwritten with the original param and writep values. I added an early return to prevent this.