#I/O Pin Assignments A/D unit 
NET "ADCS"  LOC = "A9";
NET "AD0"  LOC = "A12";
NET "AD1"  LOC = "C10";
NET "ADCLK"  LOC = "D12";

#PINS for D/A port:
NET "SYNC"  LOC = "T14"; 
NET "D0"  LOC = "R13";
NET "D1"  LOC = "T13";
NET "SCLK"  LOC = "R12";

#Start of I/O Pin Assignments
NET "clk"  LOC = "A8";
NET "btn<0>" LOC = "J13";
NET "btn<1>" LOC = "K14";
NET "btn<2>" LOC = "K13";
NET "btn<3>" LOC = "K12";

#switch
NET "swt<0>" LOC = "N15";
NET "swt<1>" LOC = "J16";
NET "swt<2>" LOC = "K16";
NET "swt<3>" LOC = "K15";
NET "swt<4>" LOC = "L15";
NET "swt<5>" LOC = "M16";
NET "swt<6>" LOC = "M15";
NET "swt<7>" LOC = "N16";

#seven segment LEDs
NET "ssg<0>" LOC = "F13";
NET "ssg<1>" LOC = "E13";
NET "ssg<2>" LOC = "G15";
NET "ssg<3>" LOC = "H13";
NET "ssg<4>" LOC = "J14";
NET "ssg<5>" LOC = "E14";
NET "ssg<6>" LOC = "G16";
NET "ssg<7>" LOC = "H14";
# digit of seven segments
NET "an<0>"  LOC = "G14";
NET "an<1>"  LOC = "G12";
NET "an<2>"  LOC = "G13";
NET "an<3>"  LOC = "F12";
# eight single LEDs
NET "led<0>" LOC = "L14";
NET "led<1>" LOC = "L13";
NET "led<2>" LOC = "M14";
NET "led<3>" LOC = "L12";
NET "led<4>" LOC = "N14";
NET "led<5>" LOC = "M13";
NET "led<6>" LOC = "P14";
NET "led<7>" LOC = "R16";