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// This file ONLY is placed into the Public Domain, for any use,
// without warranty, 2008 by Lane Brooks
module top (input A, input B, input SEL, output Y1, output Y2, output Z);
io io1(.A(A), .OE( SEL), .Z(Z), .Y(Y1));
pass io2(.A(B), .OE(!SEL), .Z(Z), .Y(Y2));
assign Z = 1'bz;
endmodule
module pass (input A, input OE, inout Z, output Y);
io io(.A(A), .OE(OE), .Z(Z), .Y(Y));
assign Z = 1'bz;
endmodule
module io (input A, input OE, inout Z, output Y);
assign Z = (OE) ? A : 1'bz;
assign Y = Z;
assign Z = 1'bz;
endmodule
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