Reads the entire 32-bit I/O space.
Writes the entire 32-bit I/O space, masking out inputs.
Reads the state of the SeaIO 462 / 463 Holding Register Set.
Configures the module based on the SeaIO 462 / 463 Holding Register Set. Note that registers 1 and 2 of the 160 may be used to read / write the TTL IO.