Statusregister 3 can only be written. Writing with bits set to '1' will set the corresponding flags (see previous section) or generate the corresponding external event (a pulse-shaped signal).
The following external events are defined:
Table 8 lists the bit position of these flags and events.
Table: Definition of bits in Statusregister 3.
(NOTE: due to a hardware
bug A31 and A30 are swapped in transputer X's Statusregister).