Binary To Bcd Verilog Code [ 2K ]

module binary_to_bcd #( parameter BINARY_WIDTH = 8, // e.g., 8-bit binary input parameter BCD_DIGITS = 3 // 8-bit binary max = 255 → 3 BCD digits )( input wire [BINARY_WIDTH-1:0] binary, output reg [4*BCD_DIGITS-1:0] bcd ); integer i; reg [4*BCD_DIGITS-1:0] temp; reg [BINARY_WIDTH-1:0] bin;

// Check and correct each BCD digit // (using blocking statements inside loop) // Digit 0 (least significant BCD digit) if (temp[3:0] > 4) temp[3:0] = temp[3:0] + 3; // Digit 1 if (temp[7:4] > 4) temp[7:4] = temp[7:4] + 3; // Digit 2 (for 3-digit BCD) if (BCD_DIGITS > 2 && temp[11:8] > 4) temp[11:8] = temp[11:8] + 3; // Add more digits if needed end Binary To Bcd Verilog Code

bin2bcd #(.BIN_WIDTH(8), .BCD_DIGITS(3)) uut ( .bin(binary), .bcd(bcd) ); module binary_to_bcd #( parameter BINARY_WIDTH = 8, // e

bcd = temp; end endmodule For a truly scalable version, use a generate loop or a for loop that iterates over BCD digits: module bin2bcd #( parameter BIN_WIDTH = 8, parameter

bcd = bcd_reg; end endmodule module tb_bin2bcd; reg [7:0] binary; wire [11:0] bcd;

: BCD uses only 0–9; combinations 1010–1111 are invalid. 3. The Double‑Dabble Algorithm The Double‑Dabble (or shift‑and‑add‑3) algorithm converts binary to BCD without division or multiplication, making it ideal for hardware implementation.

module bin2bcd #( parameter BIN_WIDTH = 8, parameter BCD_DIGITS = 3 )( input [BIN_WIDTH-1:0] bin, output [4*BCD_DIGITS-1:0] bcd ); reg [4*BCD_DIGITS-1:0] bcd_reg; reg [BIN_WIDTH-1:0] bin_reg; integer i, j;