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module constmuldivmod(input [7:0] A, input [2:0] mode, output reg [7:0] Y);
always @* begin
case (mode)
0: Y = A / 8'd0;
1: Y = A % 8'd0;
2: Y = A * 8'd0;
3: Y = A / 8'd1;
4: Y = A % 8'd1;
5: Y = A * 8'd1;
6: Y = A / 8'd2;
7: Y = A % 8'd2;
8: Y = A * 8'd2;
9: Y = A / 8'd4;
10: Y = A % 8'd4;
11: Y = A * 8'd4;
12: Y = A / 8'd8;
13: Y = A % 8'd8;
14: Y = A * 8'd8;
default: Y = 8'd16 * A;
endcase
end
endmodule
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