Function linuxcnc_hal_sys::rtapi_inb

pub unsafe extern "C" fn rtapi_inb(port: c_uint) -> c_uchar

'rtapi_inb() gets a byte from 'port'. Returns the byte. May be called from init/cleanup code, and from within realtime tasks. Note: This function always returns zero on the simulated RTOS. Note: Many platforms provide an inline inb() that is faster.