first.ucf

spartan3adsp spi flash

NET "CLOCK_125MHZ"  LOC = "F13" | IOSTANDARD = LVCMOS33 ;
NET "LED<0>"        LOC = "P18" | IOSTANDARD = LVCMOS33  | DRIVE = 24  | SLEW = SLOW ;
NET "LED<1>"        LOC = "P25" | IOSTANDARD = LVCMOS33  | DRIVE = 24 | SLEW = SLOW ;
NET "LED<2>"        LOC = "N19" | IOSTANDARD = LVCMOS33  | DRIVE = 24  | SLEW = SLOW ;
NET "LED<3>"        LOC = "K22" | IOSTANDARD = LVCMOS33  | DRIVE = 24  | SLEW = SLOW ;
NET "LED<4>"        LOC = "H20" | IOSTANDARD = LVCMOS33  | DRIVE = 24  | SLEW = SLOW ;
NET "LED<5>"        LOC = "G21" | IOSTANDARD = LVCMOS33  | DRIVE = 24  | SLEW = SLOW ;
NET "LED<6>"        LOC = "D24" | IOSTANDARD = LVCMOS33  | DRIVE = 24  | SLEW = SLOW ;
NET "LED<7>"        LOC = "D25" | IOSTANDARD = LVCMOS33  | DRIVE = 24  | SLEW = SLOW ;

NET "CLOCK_125MHZ" TNM_NET = "CLOCK_125MHZ";
TIMESPEC "TS_CLOCK_50MHZ" = PERIOD "CLOCK_125MHZ" 8 ns HIGH 50 % INPUT_JITTER 150 ps;