3-8优先编码器

8-3 优先编码器 module encoder8_3(none_on,outcode,a,b,c,d,e,f,g,h); output none_on; output[2:0] outcode; input a,b,c,d,e,f,g,h; reg[3:0] outtemp; assign {none_on,outcode}=outtemp; always @(a or b or c or d or e or f or g or h) begin if(h) outtemp=4'b0111; else if(g) outtemp=4'b0110; else if(f) outtemp=4'b0101; else if(e) outtemp=4'b0100; else if(d) outtemp=4'b0011; else if(c) outtemp=4'b0010; else if(b) outtemp=4'b0001; else if(a) outtemp=4'b0000; else outtemp=4'b1000; end endmodule