NET "PB_UP_not" LOC = "AH4";
NET "PB_DOWN_not" LOC = "AG3";
NET "PB_LEFT_not" LOC = "AH1";
NET "PB_RIGHT_not" LOC = "AH2";

NET "PB_UP_not" IOSTANDARD = LVTTL;
NET "PB_DOWN_not" IOSTANDARD = LVTTL;
NET "PB_LEFT_not" IOSTANDARD = LVTTL;
NET "PB_RIGHT_not" IOSTANDARD = LVTTL;

NET "LED1_OUT_not" LOC = "AC4";
NET "LED1_OUT_not" IOSTANDARD = LVTTL;
NET "LED1_OUT_not" DRIVE = 12;
NET "LED1_OUT_not" SLEW = SLOW;