picoblaze_trafficlight.ucf

此为VHDL实现的路口红绿灯控制例子

#--------------------------------------------------------------
#- Company:			Steepest Ascent
#- Engineer:		James A Bowman
#-
#- Create Date:   
#- Design Name:   picoblaze_traffic_light 
#- Module Name:   picoblaze_trafficlightfsm - UCF
#- Project Name:  XUP- PicoBlaze Traffic Light Example 
#- Target Device: XILINX Virtex II Pro XC2VP30
#- Tool versions:  
#- Description:
#-
#- Dependencies:
#- 
#- Revision:		Version 1.0
#- Additional 
#- Comments:		None
#- 
#--------------------------------------------------------------

## System level constraints
Net clk TNM_NET = clk;
TIMESPEC TS_clk = PERIOD clk 10000 ps;

#PACE: Start of Constraints generated by PACE

#PACE: Start of PACE I/O Pin Assignments

# btn1_in -> Enter Keypad Button (Active Low)
NET "btn1_in"  LOC = "AG5" | IOSTANDARD = LVTTL ;

# btn2_in -> Left Keypad Button (Active Low) 
NET "btn2_in"  LOC = "AH1" | IOSTANDARD = LVTTL ; 

# Development Board 100 MHz Clock
NET "clk"  LOC = "AJ15" | IOSTANDARD = LVCMOS25 ; 

# Development Board LED Outputs (Active Low)
NET "led_out<0>"  LOC = "AC4" | IOSTANDARD = LVTTL  | SLEW = SLOW  | DRIVE = 12 ; 
NET "led_out<1>"  LOC = "AC3" | IOSTANDARD = LVTTL  | SLEW = SLOW  | DRIVE = 12 ; 
NET "led_out<2>"  LOC = "AA6" | IOSTANDARD = LVTTL  | SLEW = SLOW  | DRIVE = 12 ; 
NET "led_out<3>"  LOC = "AA5" | IOSTANDARD = LVTTL  | SLEW = SLOW  | DRIVE = 12 ; 
 

#PACE: Start of PACE Area Constraints

#PACE: Start of PACE Prohibit Constraints

#PACE: End of Constraints generated by PACE