DIC Lab Work 5

Required Notions and Knowledge

• Boolean logic and numbering systems
• Verilog Syntax Verilog_EN
• Using the Altera Quartus II Synthesis Program
• List of pins for DE1 board, List of pins for DE1-SoC board
• Sequential Circuits
• Counter
• RAM Memory

Example

• It will describe in Verilog a 16x4b RAM with a read-write port. Reading is synchronous.
• The necessary pin connections will be written
  • the address to SW7-4 and date of entry to SW3-0.
  • the write enable signal at one of the buttons (KEY0 ... KEY3).
  • the output at LEDR3-0.
  • memory clock input to one of the DE1 plate oscillators.
• Program the FPGA, and using the switches and buttons on the board, write 3, 6, and 10 with the values ​​2, 1 and 7, then read them in the same order. Notice, using the LEDs of the board, if the memory has been written.

Exercise

• Describe in Verilog a 16x4b RAM with two ports:
  • A write-only sync port with the following signals:
    • WR_ADDR - the address you write
    • WR_EN - write command
    • WR_DATA - written data
  • A read-only read-only port with the following signals:
    • RD_ADDR - read address
    • RD_DATA - read data
• The memory will be instantiated in the TOP module as shown below:

module COUNTER (
    input clk,
    output reg [31: 0] cnt
);

always @ (posedge clk) cnt <= cnt + 1;

endmodule

module ROM(
    input [3: 0] in,
    output reg [3: 0] out
);

always @ (in)
    case (in)
        0: out=4'b1010;
        1: out=4'b0110;
        2: out=4'b0011;
        3: out=4'b1110;
        4: out=4'b1011;
        5: out=4'b1111;
        6: out=4'b0111;
        7: out=4'b1100;
        8: out=4'b0001;
        9: out=4'b0101;
        10: out=4'b1101;
        11: out=4'b0000;
        12: out=4'b0010;
        13: out=4'b0100;
        14: out=4'b1000;
        15: out=4'b1001;
    endcase

endmodule

• Write the constraints required to connect the TOP module ports:
  • DIN to SW7-4,
  • ADR at SW3-0,
  • WEN la KEY3,
  • DOED to LEDR3-0,
  • clock input at CLOCK_50.
• Schedule the FPGA board; Write the RAM with the values ​​required to produce DOUT a sequence of numbers indicated by the teacher.

Submission of Exercises

For scoring, the following files will be submitted to the e-mail address indicated by the teacher.

An archive zip

• All Verilog files (with the .v extension) containing the circuit description
• A constraint file with the .qsf extension
• A Quartus project file with the .qpf extension

Note that the archive will only contain files (without directories).

The subject of the email message must follow the [Name] _ [First Name] _ [Group] _Mem example Popescu_Ion_423B_Mem