DIC Lab Work 5

Notions and Knowledge Required

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

Example

• It will describe in Verilog a 16x4b RAM with a read-write port. Reading is synchronous.
• The necessary debugging to connect will be written
  • Address to SW7-4 and date of entry to SW3-0.
  • writing activation signal at one of the buttons (KEY0 ... KEY3).
  • Output memory at LEDR3-0.
  • memory clock input to one of the DE1 plate oscillators.
• Schedule the FPGA board, 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 stored.

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:

<syntaxhighlight lang="verilog"> module COUNTER (

   input clk,
   output reg [31: 0] cnt

)

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

endmodule

ROM modules (

   input [3: 0] in,
   output reg [3: 0] out

)

always @ (in)

   houses (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 <syntaxhighlight>

• 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