#CONFIG STEPPING="ES"; 

# Bus clock nets
NET "sys_clk_in"  TNM_NET = "sys_clk";
NET "ac97_bit_clk"  TNM_NET = "ac97_clk";
TIMESPEC "TSSYSCLK" = PERIOD "sys_clk" 9.9 ns HIGH 50 %;
TIMESPEC "TSBITCLK" = PERIOD "ac97_clk" 80 ns HIGH 50 %;

NET sys_clk_in LOC = AE14;
NET sys_clk_in IOSTANDARD = LVCMOS33;
NET sys_rst_n_in LOC = D6;
NET sys_rst_n_in PULLUP;
NET sys_rst_n_in TIG;

////////////////////////////////////////////////////////////////////////////
// AC97 Sound Controller
////////////////////////////////////////////////////////////////////////////
NET ac97_bit_clk   LOC = AE10;
NET ac97_bit_clk   IOSTANDARD = LVCMOS33;
NET ac97_bit_clk   PERIOD = 80;
NET ac97_sdata_in  LOC = AD16;
NET ac97_sdata_in  IOSTANDARD = LVCMOS33;
NET ac97_reset_n   LOC = AD10;
NET ac97_reset_n   IOSTANDARD = LVCMOS33;
NET ac97_reset_n   TIG;
NET ac97_reset_n   SLEW = SLOW;
NET ac97_sdata_out LOC = C8;
NET ac97_sdata_out SLEW = FAST;
NET ac97_sync      LOC = D9;
NET ac97_sync      SLEW = FAST;

////////////////////////////////////////////////////////////////////////////
// RS-232
////////////////////////////////////////////////////////////////////////////
NET sys_rx LOC = W2;
NET sys_rx IOSTANDARD = LVCMOS33;
NET sys_rx TIG;
NET "sys_tx" LOC = "W1";
NET sys_tx IOSTANDARD = LVCMOS33;
NET "sys_tx" TIG;

////////////////////////////////////////////////////////////////////////////
// Buttons, LEDs, and DIP Switches
////////////////////////////////////////////////////////////////////////////
# GPLED 0-3
NET "sys_led<0>" LOC = "G5"; #GPLED0
NET "sys_led<1>" LOC = "G6"; #GPLED1
NET "sys_led<2>" LOC = "A11"; #GPLED2
NET "sys_led<3>" LOC = "A12"; #GPLED3
# North-East-South-West-Center LEDs
NET "sys_led<4>" LOC = "F9"; # W LED
NET "sys_led<5>" LOC = "E2"; # N LED
NET "sys_led<6>" LOC = "E10"; # E LED
NET "sys_led<7>" LOC = "A5"; # S LED
NET "sys_led<8>" LOC = "C6"; # C LED
NET "sys_led<*>" TIG;
NET "sys_led<*>" SLEW = SLOW;
NET "sys_led<*>" DRIVE = 2;
NET "sys_led<*>" TIG;
# North-East-South-West-Center Buttons
NET "sys_btn<0>" LOC = "E9"; # W Button
NET "sys_btn<1>" LOC = "E7"; # N Button
NET "sys_btn<2>" LOC = "F10"; # E Button
NET "sys_btn<3>" LOC = "A6"; # S Button
NET "sys_btn<4>" LOC = "B6"; # C Button
NET "sys_btn<*>" TIG;
# Dip Switches 1-8
#NET "sys_dip<7>" LOC = "U24"; # DIP SW 8
#NET "sys_dip<6>" LOC = "U25"; # DIP SW 7
#NET "sys_dip<5>" LOC = "V23"; # DIP SW 6
#NET "sys_dip<4>" LOC = "U23"; # DIP SW 5
#NET "sys_dip<3>" LOC = "U26"; # DIP SW 4
#NET "sys_dip<2>" LOC = "T26"; # DIP SW 3
#NET "sys_dip<1>" LOC = "R19"; # DIP SW 2
#NET "sys_dip<0>" LOC = "R20"; # DIP SW 1
#NET "sys_dip<*>" IOSTANDARD = LVCMOS33;
#NET "sys_dip<*>" TIG;

////////////////////////////////////////////////////////////////////////////
// LCD
////////////////////////////////////////////////////////////////////////////
NET sys_lcd_e LOC = AE13; # LCD_E
NET sys_lcd_e IOSTANDARD = LVCMOS33;
NET sys_lcd_e TIG;
NET sys_lcd_rs LOC = AC17; # LCD_RS
NET sys_lcd_rs IOSTANDARD = LVCMOS33;
NET sys_lcd_rs TIG;
NET sys_lcd_rw LOC = AB17; # LCD_RW
NET sys_lcd_rw IOSTANDARD = LVCMOS33;
NET sys_lcd_rw TIG;
NET sys_lcd_d<3> LOC = AF12; # LCD_DB7
NET sys_lcd_d<2> LOC = AE12; # LCD_DB6
NET sys_lcd_d<1> LOC = AC10; # LCD_DB5
NET sys_lcd_d<0> LOC = AB10; # LCD_DB4
NET sys_lcd_d<*> IOSTANDARD = LVCMOS33;
NET sys_lcd_d<*> TIG;
NET sys_lcd_d<*> PULLDOWN;