set_location_assignment PIN_M3 -to pmod[1]
set_location_assignment PIN_L3 -to pmod[2]
set_location_assignment PIN_M2 -to pmod[3]
set_location_assignment PIN_M1 -to pmod[4]
set_location_assignment PIN_N3 -to pmod[5]
set_location_assignment PIN_N2 -to pmod[6]
set_location_assignment PIN_K2 -to pmod[7]
set_location_assignment PIN_K1 -to pmod[8]

set_instance_assignment -name IO_STANDARD "3.3-V LVCMOS" -to pmod*