module auto_mda;

    /*AUTOWIRE*/
    // Beginning of automatic wires (for undeclared instantiated-module outputs)
    wire [0] [1:0]	mda;			// From a0 of a.v, ...
    wire [1:0]		sda;			// From a0 of a.v, ...
    // End of automatics

    /* a AUTO_TEMPLATE (
     .sda				(sda[@]),
     .mda				(mda[@][]),
     ); */
    a a0
      (/*AUTOINST*/
       // Outputs
       .sda				(sda[0]),		 // Templated
       .mda				(mda[0][1:0]));		 // Templated
    a a1
      (/*AUTOINST*/
       // Outputs
       .sda				(sda[1]),		 // Templated
       .mda				(mda[1][1:0]));		 // Templated

    b b
      (/*AUTOINST*/
       // Inputs
       .sda				(sda[1:0]),
       .mda				(mda/*[1:0][1:0]*/));

endmodule

module a (output 	sda,
	  output [1:0] 	mda)
endmodule

module b (input [1:0]	   sda,
	  input [1:0][1:0] mda);
endmodule