Purpose of diodes in supervisor IC circuit

[pacman22]

This is a reset circuit from Xilinx ZCU106 evaluation board. What is the purpose of D5 and D6 diodes here? Are they really needed?

 

[D.A.(Tony)Stewart]

This is a reset circuit from Xilinx ZCU106 evaluation board. What is the purpose of D5 and D6 diodes here? Are they really needed?

Assuming a certain impedance of wire to remote enclosure switches, can you think of any reason why AMD would include them in this design?

 

[danadakk]

Looks like logic is MR disabled if P-B activated and header jumper absent.

 

[D.A.(Tony)Stewart]

Two input functions are diode isolated logic pulled low with the MR jumper =0