To be used with Xilinx ISE program

Write the following program to be executed on the FPGA board. (Elbert V2 Spartan 3A) 2. Write a VHDL model for a code detector as shown in the Figure. The keypad is used to unlock a door. Pressing the start button followed by the sequence red-blue-green-red unlocks the door, no other sequence can open the door. Assume the clock is slowed down and each pressing of a button is detected once. For example when red is pressed it is only detected as pressed for one clock cycle. l1 Code Detector Door Lock green blue Key Pad Write the following program to be executed on the FPGA board. (Elbert V2 Spartan 3A) 2. Write a VHDL model for a code detector as shown in the Figure. The keypad is used to unlock a door. Pressing the start button followed by the sequence red-blue-green-red unlocks the door, no other sequence can open the door. Assume the clock is slowed down and each pressing of a button is detected once. For example when red is pressed it is only detected as pressed for one clock cycle. l1 Code Detector Door Lock green blue Key Pad