A priority encoder is a combinational circuit that, when given an input bit vector, outputs the position of the first 1 bit in the vector. For example, a 8-bit priority encoder given the input 8'b10010000 would output 3'd4, because bit is first bit that is high.
Build a 4-bit priority encoder. For this problem, if none of the input bits are high (i.e., input is zero), output zero. Note that a 4-bit number has 16 possible combinations.
// synthesis verilog_input_version verilog_2001 module top_module ( input [3:0] in, output reg [1:0] pos );
Using hexadecimal (4'hb) or decimal (4'd11) number literals would save typing vs. binary (4'b1011) literals.
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