added comments to zbc units

src/ieu/alu.sv

@@ -89,11 +89,13 @@ module alu #(parameter WIDTH=32) (
   if (WIDTH == 64)  assign ALUResult = W64 ? {{32{FullResult[31]}}, FullResult[31:0]} : FullResult;
   else              assign ALUResult = FullResult;
 
+  //NOTE: This looks good and can be merged.
   if (`ZBC_SUPPORTED) begin: zbc
     zbc #(WIDTH) ZBC(.A(A), .B(B), .Funct3(Funct3), .ZBCResult(ZBCResult));
   end else assign ZBCResult = 0;
   
 
+  //NOTE: Unoptimized, eventually want to look at ZBCop/ZBSop/ZBAop/ZBBop from decoder to select from a B instruction or the ALU
   if (`ZBC_SUPPORTED) begin : zbcdecoder
     always_comb
       case ({Funct7, Funct3})

src/ieu/bmu/clmul.sv

@@ -33,8 +33,7 @@ module clmul #(parameter WIDTH=32) (
   input  logic [WIDTH-1:0] A, B,             // Operands
   output logic [WIDTH-1:0] ClmulResult);     // ZBS result
 
-  logic [(WIDTH*WIDTH)-1:0] s;
+  logic [(WIDTH*WIDTH)-1:0] s;               // intermediary signals for carry-less multiply
-  logic [WIDTH-1:0] intial;
   
   integer i;
   integer j;

src/ieu/bmu/zbc.sv

@@ -38,10 +38,10 @@ module zbc #(parameter WIDTH=32) (
   logic [WIDTH-1:0] RevA, RevB;
   logic [WIDTH-1:0] x,y;
 
-
   bitreverse #(WIDTH) brA(.a(A), .b(RevA));
   bitreverse #(WIDTH) brB(.a(B), .b(RevB));
    
+  //NOTE: Optimize this when doing decoder stuff.
   always_comb begin
     casez (Funct3)
       3'b001: begin //clmul