# Spartan 3 Starter Board

# clock
NET "clk" LOC = "T9";
# constraint
NET "clk" PERIOD = 20 HIGH 50%;
 
# leds
NET "led<0>" LOC = "K12";
NET "led<1>" LOC = "P14";
NET "led<2>" LOC = "L12";
NET "led<3>" LOC = "N14";
NET "led<4>" LOC = "P13";
NET "led<5>" LOC = "N12";
NET "led<6>" LOC = "P12";
NET "led<7>" LOC = "P11";

# 7 segment display
# cathodes
NET "seg7<0>" LOC = "E14";	# segment 'A'
NET "seg7<1>" LOC = "G13";	# segment 'B'
NET "seg7<2>" LOC = "N15";	# segment 'C'
NET "seg7<3>" LOC = "P15";	# segment 'D'
NET "seg7<4>" LOC = "R16";	# segment 'E'
NET "seg7<5>" LOC = "F13";	# segment 'F'
NET "seg7<6>" LOC = "N16";	# segment 'G'
NET "seg7<7>" LOC = "P16";	# DP (decimal point) 

# anodes
NET "seg7de<0>" LOC = "D14";	# digit enable 0 (right digit)
NET "seg7de<1>" LOC = "G14";	# digit enable 1
NET "seg7de<2>" LOC = "F14";	# digit enable 2
NET "seg7de<3>" LOC = "E13";	# digit enable 3 (left digit)

# switches
NET "sw<0>" LOC = "F12";
NET "sw<1>" LOC = "G12";
NET "sw<2>" LOC = "H14";
NET "sw<3>" LOC = "H13";
NET "sw<4>" LOC = "J14";
NET "sw<5>" LOC = "J13";
NET "sw<6>" LOC = "K14";
NET "sw<7>" LOC = "K13";

# buttons
NET "btn<0>" LOC = "M13";
NET "btn<1>" LOC = "M14";
NET "btn<2>" LOC = "L13";
NET "btn<3>" LOC = "L14";

# sio
NET "rs232RX"  LOC = "T13";
NET "rs232TX"  LOC = "R13";

# SRAM
# control
NET "sr1ce" LOC = "P7";
NET "sr1ub" LOC = "T4";
NET "sr1lb" LOC = "P6";
NET "sr2ce" LOC = "N5";
NET "sr2ub" LOC = "R4";
NET "sr2lb" LOC = "P5";
NET "sr12we" LOC = "G3";	# shared
NET "sr12oe" LOC = "K4";	# shared
 
# address bus
NET "sraddr<0>" LOC = "L5";
NET "sraddr<1>" LOC = "N3";
NET "sraddr<2>" LOC = "M4";
NET "sraddr<3>" LOC = "M3";
NET "sraddr<4>" LOC = "L4";
NET "sraddr<5>" LOC = "G4";
NET "sraddr<6>" LOC = "F3";
NET "sraddr<7>" LOC = "F4";
NET "sraddr<8>" LOC = "E3";
NET "sraddr<9>" LOC = "E4";
NET "sraddr<10>" LOC = "G5";
NET "sraddr<11>" LOC = "H3";
NET "sraddr<12>" LOC = "H4";
NET "sraddr<13>" LOC = "J4";
NET "sraddr<14>" LOC = "J3";
NET "sraddr<15>" LOC = "K3";
NET "sraddr<16>" LOC = "K5";
NET "sraddr<17>" LOC = "L3";
 
# data bus SRAM1
NET "srio<0>" LOC = "N7";
NET "srio<1>" LOC = "T8";
NET "srio<2>" LOC = "R6";
NET "srio<3>" LOC = "T5";
NET "srio<4>" LOC = "R5";
NET "srio<5>" LOC = "C2";
NET "srio<6>" LOC = "C1";
NET "srio<7>" LOC = "B1";
NET "srio<8>" LOC = "D3";
NET "srio<9>" LOC = "P8";
NET "srio<10>" LOC = "F2";
NET "srio<11>" LOC = "H1";
NET "srio<12>" LOC = "J2";
NET "srio<13>" LOC = "L2";
NET "srio<14>" LOC = "P1";
NET "srio<15>" LOC = "R1";
  
# data bus SRAM2
NET "srio<16>" LOC = "P2";
NET "srio<17>" LOC = "N2";
NET "srio<18>" LOC = "M2";
NET "srio<19>" LOC = "K1";
NET "srio<20>" LOC = "J1";
NET "srio<21>" LOC = "G2";
NET "srio<22>" LOC = "E1";
NET "srio<23>" LOC = "D1";
NET "srio<24>" LOC = "D2";
NET "srio<25>" LOC = "E2";
NET "srio<26>" LOC = "G1";
NET "srio<27>" LOC = "F5";
NET "srio<28>" LOC = "C3";
NET "srio<29>" LOC = "K2";
NET "srio<30>" LOC = "M1";
NET "srio<31>" LOC = "N1";

# timing constraints
##NET "srio<*>" NODELAY;
##NET "sraddr<*>" OFFSET = OUT 3 AFTER "clk2x";
##NET "sr12we" OFFSET = OUT 3 AFTER "clk2x";
TIMESPEC TS01 = FROM FFS TO FFS 7;
TIMESPEC TS02 = FROM PADS TO FFS 7;
TIMESPEC TS03 = FROM FFS TO PADS 7;
 

# CamA double at B1 connector
# control
NET "XCLK" LOC = "M6";
NET "RSTB" LOC = "N6";
NET "PWDN" LOC = "R3";
NET "SCL" LOC = "C16";

NET "SDA1" LOC = "C15";
NET "PCLK1" LOC = "D16";
NET "HREF1" LOC = "D15";
NET "camVSYNC1" LOC = "E15";

NET "SDA2" LOC = "B16";
NET "PCLK2" LOC = "R7";
NET "HREF2" LOC = "E11";
NET "camVSYNC2" LOC = "D12";

#data  
#Cam1 (left)
NET "D1<0>" LOC = "L15";
NET "D1<1>" LOC = "K15";
NET "D1<2>" LOC = "H15";
NET "D1<3>" LOC = "J16";
NET "D1<4>" LOC = "K16";
NET "D1<5>" LOC = "H16";
NET "D1<6>" LOC = "G16";
NET "D1<7>" LOC = "G15";
NET "D1<8>" LOC = "F15";
NET "D1<9>" LOC = "E16";

#Cam2 (right)
NET "D2<0>" LOC = "T7";
NET "D2<1>" LOC = "C12";
NET "D2<2>" LOC = "C11";
NET "D2<3>" LOC = "D11";
NET "D2<4>" LOC = "R10";
NET "D2<5>" LOC = "P10";
NET "D2<6>" LOC = "N11";
NET "D2<7>" LOC = "E10";
NET "D2<8>" LOC = "T3";
NET "D2<9>" LOC = "C10";


# CamA constraints 
##NET "D1<*>" NODELAY;
##NET "HREF1" NODELAY;
##NET "camVSYNC1" NODELAY;
##NET "PCLK1" NODELAY;

# MonA at A2 connector
# control
NET "m1" LOC = "A12";
NET "m2" LOC = "A13";
NET "mclk" LOC = "B6";
NET "syncT" LOC = "B8";
NET "nsync" LOC = "B7";
NET "nblank" LOC = "A5";
NET "mVSYNC" LOC = "B14";
NET "mHSYNC" LOC = "D9";

# data
# red
NET "r<0>" LOC = "C8";
NET "r<1>" LOC = "D8";
NET "r<2>" LOC = "C9";
NET "r<3>" LOC = "D10";
NET "r<4>" LOC = "A3";
NET "r<5>" LOC = "B4";
NET "r<6>" LOC = "A4";
NET "r<7>" LOC = "B5";

# green
NET "g<0>" LOC = "B13";
NET "g<1>" LOC = "B11";
NET "g<2>" LOC = "B12";
NET "g<3>" LOC = "B10";
NET "g<4>" LOC = "A10";
NET "g<5>" LOC = "A8";
NET "g<6>" LOC = "A9";
NET "g<7>" LOC = "A7";

# blue
NET "b<0>" LOC = "D7";
NET "b<1>" LOC = "C7";
NET "b<2>" LOC = "E7";
NET "b<3>" LOC = "C6";
NET "b<4>" LOC = "D6";
NET "b<5>" LOC = "C5";
NET "b<6>" LOC = "D5";
NET "b<7>" LOC = "E6";
 

# IrLEDs at A1 connector
NET "irLed<0>" LOC = "M7";
NET "irLed<1>" LOC = "M10";

# Clock Test on VGA
NET "DCM_CLK" LOC = "R12";
NET "VGA_CLK" LOC = "T12";