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[/] [quark/] [trunk/] [05_HDLConstruction/] [01_OldArchitecture_ReferenceOnly/] [ProgramCounter/] [ProgramCounter.v] - Blame information for rev 15

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module ProgramCounter(
  input        Clock,
  input        Reset,
  input        IncrementPC,
  input        WritePC,
  input  [0:7] NewPC,
  output [0:7] ProgramCounter
  );
 
  reg [0:7] TemporalPC;
 
  always@(posedge Clock, negedge Reset) begin
    if (Reset == 1'b0) begin
      TemporalPC <= 8'h00;
    end else begin
      case (WritePC)
        1'b0: begin
          if (TemporalPC < 8'hFF) begin
            TemporalPC <= TemporalPC + IncrementPC;
          end else begin
            TemporalPC <= 8'h00;
          end
        end
        1'b1: begin
          TemporalPC <= NewPC;
        end
      endcase
    end
  end
 
  assign ProgramCounter = TemporalPC;
endmodule

Line No.	Rev	Author	Line
1	3	progman32	`module ProgramCounter(`
2			`input Clock,`
3			`input Reset,`
4			`input IncrementPC,`
5			`input WritePC,`
6			`input [0:7] NewPC,`
7			`output [0:7] ProgramCounter`
8			`);`
9
10			`reg [0:7] TemporalPC;`
11
12			`always@(posedge Clock, negedge Reset) begin`
13			`if (Reset == 1'b0) begin`
14			`TemporalPC <= 8'h00;`
15			`end else begin`
16			`case (WritePC)`
17			`1'b0: begin`
18			`if (TemporalPC < 8'hFF) begin`
19			`TemporalPC <= TemporalPC + IncrementPC;`
20			`end else begin`
21			`TemporalPC <= 8'h00;`
22			`end`
23			`end`
24			`1'b1: begin`
25			`TemporalPC <= NewPC;`
26			`end`
27			`endcase`
28			`end`
29			`end`
30
31			`assign ProgramCounter = TemporalPC;`
32			`endmodule`

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[/] [quark/] [trunk/] [05_HDLConstruction/] [01_OldArchitecture_ReferenceOnly/] [ProgramCounter/] [ProgramCounter.v] - Blame information for rev 15