URL
https://opencores.org/ocsvn/generic_parameterized_carry_lookahead_adder/generic_parameterized_carry_lookahead_adder/trunk
Subversion Repositories generic_parameterized_carry_lookahead_adder
Compare Revisions
- This comparison shows the changes necessary to convert path
/generic_parameterized_carry_lookahead_adder
- from Rev 5 to Rev 6
- ↔ Reverse comparison
Rev 5 → Rev 6
/trunk/bench/tb.v
0,0 → 1,33
module tb; |
reg [2:0]A,B; |
wire [2:0]S; |
reg Cin; |
wire Cout; |
|
carry_lookahead_adder #(.N(3)) DUT(.A(A), .B(B), .S(S), .Cout(Cout), .Cin(Cin)); |
|
|
task load(input [2:0]a,b, input c); begin |
A = a; |
B = b; |
Cin = c; |
end |
endtask |
|
integer i , j,k; |
initial begin |
$dumpfile ("carry_lookahead_adder.vcd"); |
$dumpvars (0, tb); |
for (k=0;k<2;k=k+1) begin |
for (i=0; i<8 ; i=i+1) begin |
for(j=0;j<8;j=j+1) begin |
load(i,j,k); |
#10; |
end |
end |
end |
$finish; |
end |
initial $monitor("A = %b, B = %b, Cin = %b, Cout = %b, Sum = %b",A,B,Cin,Cout,S); |
|
endmodule |
/trunk/rtl/carry_generate.v
0,0 → 1,13
module carry_generate(P,G,C,Cin); |
parameter N = 2; |
input [N-1:0]P,G; |
input Cin; |
output [N:0]C; |
assign C[0] =Cin; |
genvar i; |
generate for(i=1;i<=N;i=i+1) begin |
assign C[i] = G[i-1] | (P[i-1]&C[i-1]); |
end |
endgenerate |
|
endmodule |
/trunk/rtl/carry_lookahead_adder.v
0,0 → 1,17
module carry_lookahead_adder(A,B,S,Cout,Cin); |
parameter N = 2; |
|
input [N-1:0]A,B; |
input Cin; |
output [N-1:0]S; |
output Cout; |
|
wire [N-1:0]P, G ; |
wire [N:0]C; |
propagate_generate #(.N(N)) M1(.A(A), .B(B), .P(P), .G(G)); |
carry_generate #(.N(N)) M2 (.P(P), .G(G), .C(C), .Cin(Cin)); |
|
assign S = P ^ C; |
assign Cout = C[N]; |
|
endmodule |
/trunk/rtl/propagate_generate.v
0,0 → 1,11
module propagate_generate(A,B,P,G); |
parameter N = 2; |
input [N-1 :0] A,B; |
output [N-1 :0]P,G; |
|
assign P = A^B; |
assign G = A&B; |
|
endmodule |
|
|