source: HDLQ/Library/FanoutC4.v @ 1

module Fanout_C4 (A, B, C, status, fault);
//   A
//   |- C
//   B
//forward =1 information goes C-> B & A
//status 00=relax,01=switch, 10=hold, 11=release
// if fault =1 the out is inverted if in the "L shaped " path (both B and A)
        input [1:0] status;
        input fault;
        input C;
        output B,A;
        reg loadedB,loadedA;
        wor A,B,C;


assign B =  (status == 2'b10) ? loadedB :
            (status == 2'b01) ? (fault ? ~C : C): 1'bz;

assign A =  (status == 2'b10) ? loadedA :
            (status == 2'b01) ? (fault ? ~C : C)  : 1'bz;

            
initial
begin
        loadedB <=1'bz;
        loadedA <=1'bz;
end

always @ (posedge status[1])
        begin
                if (status[0]==0)
                        begin
                                loadedB <= (B===1'bx)? 1'bz: B;
                                loadedA <= (A===1'bx)? 1'bz: A;
                        end
        end
endmodule