VHDL code for Binary to BCD

[BB11]

Can any one please post the code for binary to bcd conversion in vhdl??????
need it urgently!!!

 

[barkha]

Link : Conversions might be useful

---------- Post added at 19:24 ---------- Previous post was at 19:23 ----------

Conversions

see this link

 

[BB11]

thanks barkha ..... can u post the code for bcd to 7 segment and ALU progrm for addition and subtraction with OVERFLOW and CARRY?...........
urgent PLSSSSSSSSSS

 

[barkha]

few useful links
**broken link removed**
VHDL coding tips and tricks: VHDL code for BCD to 7-segment display converter
**broken link removed**
**broken link removed**
**broken link removed**

It would be good if you try design and code by yourself first and then see other's code

 

[jimjim2k]

Hi

module add3(in,out);
input [3:0] in;
output [3:0] out;
reg [3:0] out;
always @ (in)
case (in)
4'b0000: out <= 4'b0000;
4'b0001: out <= 4'b0001;
4'b0010: out <= 4'b0010;
4'b0011: out <= 4'b0011;
4'b0100: out <= 4'b0100;
4'b0101: out <= 4'b1000;
4'b0110: out <= 4'b1001;
4'b0111: out <= 4'b1010;
4'b1000: out <= 4'b1011;
4'b1001: out <= 4'b1100;
default: out <= 4'b0000;
endcase
endmodule

//
module binary_to_BCD(A,ONES,TENS,HUNDREDS);
input [7:0] A;
output [3:0] ONES, TENS;
output [1:0] HUNDREDS;
wire [3:0] c1,c2,c3,c4,c5,c6,c7;
wire [3:0] d1,d2,d3,d4,d5,d6,d7;
assign d1 = {1'b0,A[7:5]};
assign d2 = {c1[2:0],A[4]};
assign d3 = {c2[2:0],A[3]};
assign d4 = {c3[2:0],A[2]};
assign d5 = {c4[2:0],A[1]};
assign d6 = {1'b0,c1[3],c2[3],c3[3]};
assign d7 = {c6[2:0],c4[3]};
add3 m1(d1,c1);
add3 m2(d2,c2);
add3 m3(d3,c3);
add3 m4(d4,c4);
add3 m5(d5,c5);
add3 m6(d6,c6);
add3 m7(d7,c7);
assign ONES = {c5[2:0],A[0]};
assign TENS = {c7[2:0],c5[3]};
assign HUNDREDS = {c6[3],c7[3]};
endmodule