net CLK period = 20 ns ;
NET "CLK" 		LOC = "T9";

NET "PS2DATA"           LOC = "M15";
NET "PS2CLK"            LOC = "M16";


NET "VGA_R" 		LOC = "R12";
NET "VGA_G" 		LOC = "T12";
NET "VGA_B" 		LOC = "R11";
NET "VGA_HSYNC"		LOC = "R9";
NET "VGA_VSYNC"		LOC = "T10";

# The leftmost is "RESET":
NET "RST"		LOC = "L14";

NET "PB_IN2" 		LOC = "L13";
NET "PB_IN1" 		LOC = "M14";

NET "PB_IN0" 		LOC = "M13";

# LED_OUT<0> is the righmost.
NET "LED_OUT<0>" 	LOC = "K12";
NET "LED_OUT<1>" 	LOC = "P14";
NET "LED_OUT<2>" 	LOC = "L12";
NET "LED_OUT<3>" 	LOC = "N14";
NET "LED_OUT<4>" 	LOC = "P13";
NET "LED_OUT<5>" 	LOC = "N12";
NET "LED_OUT<6>" 	LOC = "P12";
NET "LED_OUT<7>" 	LOC = "P11";

# DIGIT_OUT<0> is anode for the righmost, DIGIT_OUT<3> for the leftmost
# segment:
NET "DIGIT_OUT<0>" 	LOC = "D14";
NET "DIGIT_OUT<1>" 	LOC = "G14";
NET "DIGIT_OUT<2>" 	LOC = "F14";
NET "DIGIT_OUT<3>" 	LOC = "E13";

# segment encoding
#      0
#     ---  
#  5 |   | 1
#     ---   <- 6
#  4 |   | 2
#     --- . <- 7
#      3

NET "SEG_OUT<0>" 	LOC = "E14";
NET "SEG_OUT<1>" 	LOC = "G13";
NET "SEG_OUT<2>" 	LOC = "N15";
NET "SEG_OUT<3>" 	LOC = "P15";
NET "SEG_OUT<4>" 	LOC = "R16";
NET "SEG_OUT<5>" 	LOC = "F13";
NET "SEG_OUT<6>" 	LOC = "N16";
NET "SEG_OUT<7>" 	LOC = "P16";

# SW_IN<0> is the righmost, SW_IN<7> the leftmost slide switch:
NET "SW_IN<0>" 		LOC = "F12";
NET "SW_IN<1>" 		LOC = "G12";
NET "SW_IN<2>" 		LOC = "H14";
NET "SW_IN<3>" 		LOC = "H13";
NET "SW_IN<4>" 		LOC = "J14";
NET "SW_IN<5>" 		LOC = "J13";
NET "SW_IN<6>" 		LOC = "K14";
NET "SW_IN<7>" 		LOC = "K13";


NET ISSI_CE1N           LOC = "P7";
NET ISSI_CE2N           LOC = "N5";
NET ISSI_OEN            LOC = "K4";
NET ISSI_WEN            LOC = "G3";
NET ISSI_LB1N           LOC = "P6";
NET ISSI_LB2N           LOC = "P5";
NET ISSI_UB1N           LOC = "T4";
NET ISSI_UB2N           LOC = "R4";


NET "ISSI_ADDR<0>"      LOC = "L5";
NET "ISSI_ADDR<1>"      LOC = "N3";
NET "ISSI_ADDR<2>"      LOC = "M4";
NET "ISSI_ADDR<3>"      LOC = "M3";
NET "ISSI_ADDR<4>"      LOC = "L4";
NET "ISSI_ADDR<5>"      LOC = "G4";
NET "ISSI_ADDR<6>"      LOC = "F3";
NET "ISSI_ADDR<7>"      LOC = "F4";
NET "ISSI_ADDR<8>"      LOC = "E3";
NET "ISSI_ADDR<9>"      LOC = "E4";
NET "ISSI_ADDR<10>"     LOC = "G5";
NET "ISSI_ADDR<11>"     LOC = "H3";
NET "ISSI_ADDR<12>"     LOC = "H4";
NET "ISSI_ADDR<13>"     LOC = "J4";
NET "ISSI_ADDR<14>"     LOC = "J3";
NET "ISSI_ADDR<15>"     LOC = "K3";
NET "ISSI_ADDR<16>"     LOC = "K5";
NET "ISSI_ADDR<17>"     LOC = "L3";


NET "ISSI_DATA_IO<0>"   LOC = "N7";
NET "ISSI_DATA_IO<1>"   LOC = "T8";
NET "ISSI_DATA_IO<2>"   LOC = "R6";
NET "ISSI_DATA_IO<3>"   LOC = "T5";
NET "ISSI_DATA_IO<4>"   LOC = "R5";
NET "ISSI_DATA_IO<5>"   LOC = "C2";
NET "ISSI_DATA_IO<6>"   LOC = "C1";
NET "ISSI_DATA_IO<7>"   LOC = "B1";
NET "ISSI_DATA_IO<8>"   LOC = "D3";
NET "ISSI_DATA_IO<9>"   LOC = "P8";
NET "ISSI_DATA_IO<10>"  LOC = "F2";
NET "ISSI_DATA_IO<11>"  LOC = "H1";
NET "ISSI_DATA_IO<12>"  LOC = "J2";
NET "ISSI_DATA_IO<13>"  LOC = "L2";
NET "ISSI_DATA_IO<14>"  LOC = "P1";
NET "ISSI_DATA_IO<15>"  LOC = "R1";

# These are actually the signals IO0-IO15 of IC11:
#NET "ISSI_DATA_IO<16>"  LOC = "P2";
#NET "ISSI_DATA_IO<17>"  LOC = "N2";
#NET "ISSI_DATA_IO<18>"  LOC = "M2";
#NET "ISSI_DATA_IO<19>"  LOC = "K1";
#NET "ISSI_DATA_IO<20>"  LOC = "J1";
#NET "ISSI_DATA_IO<21>"  LOC = "G2";
#NET "ISSI_DATA_IO<22>"  LOC = "E1";
#NET "ISSI_DATA_IO<23>"  LOC = "D1";
#NET "ISSI_DATA_IO<24>"  LOC = "D2";
#NET "ISSI_DATA_IO<25>"  LOC = "E2";
#NET "ISSI_DATA_IO<26>"  LOC = "G1";
#NET "ISSI_DATA_IO<27>"  LOC = "F5";
#NET "ISSI_DATA_IO<28>"  LOC = "C3";
#NET "ISSI_DATA_IO<29>"  LOC = "K2";
#NET "ISSI_DATA_IO<30>"  LOC = "M1";
#NET "ISSI_DATA_IO<31>"  LOC = "N1";