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veriloghdl

Multiplying number by ten in verilog

How do you multiply a binary number by ten in verilog? Is it as simple as 

reg [7:0] a,b;
reg[31:0] p;
b= 8'b00001001;
p=a*b;

Upgraded to windows 8 and my xilinx is working atm. Need to know asap for planning stage.

Solution

  • Nearly - 10 in binary is 1010! For multiplying two 8-bit numbers, you'll only need 16 bits for the result, so reg [15:0] p would do. What about:

     always @( a )
     p = a * 8'd10;

    or

    wire [13:0] p;
assign p = a * 4'd10;