design/sys/iop/niu/rtl/niu_smx_gen_siudp.v

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// OpenSPARC T2 Processor File: niu_smx_gen_siudp.v
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// generate data parity per N2 ras

module niu_smx_gen_siudp(
                data,
                parity
);


input [127:0] data;
output [7:0] parity;

wire [15:0] e0_data={
                                data[30], data[28],
                                data[26], data[24],
                                data[22], data[20],
                                data[18], data[16],
                                data[14], data[12],
                                data[10], data[8],
                                data[6], data[4],
                                data[2], data[0]
                                };
wire [15:0] e1_data={
                                data[62], data[60],
                                data[58], data[56],
                                data[54], data[52],
                                data[50], data[48],
                                data[46], data[44],
                                data[42], data[40],
                                data[38], data[36],
                                data[34], data[32]
                                };
wire [15:0] e2_data={
                                data[94], data[92],
                                data[90], data[88],
                                data[86], data[84],
                                data[82], data[80],
                                data[78], data[76],
                                data[74], data[72],
                                data[70], data[68],
                                data[66], data[64]
                                };
wire [15:0] e3_data={
                                data[126], data[124],
                                data[122], data[120],
                                data[118], data[116],
                                data[114], data[112],
                                data[110], data[108],
                                data[106], data[104],
                                data[102], data[100],
                                data[98], data[96]
                                };

wire [15:0] o0_data={
                                data[31], data[29],
                                data[27], data[25],
                                data[23], data[21],
                                data[19], data[17],
                                data[15], data[13],
                                data[11], data[9],
                                data[7], data[5],
                                data[3], data[1]
                                };
wire [15:0] o1_data={
                                data[63], data[61],
                                data[59], data[57],
                                data[55], data[53],
                                data[51], data[49],
                                data[47], data[45],
                                data[43], data[41],
                                data[39], data[37],
                                data[35], data[33]
                                };
wire [15:0] o2_data={
                                data[95], data[93],
                                data[91], data[89],
                                data[87], data[85],
                                data[83], data[81],
                                data[79], data[77],
                                data[75], data[73],
                                data[71], data[69],
                                data[67], data[65]
                                };
wire [15:0] o3_data={
                                data[127], data[125],
                                data[123], data[121],
                                data[119], data[117],
                                data[115], data[113],
                                data[111], data[109],
                                data[107], data[105],
                                data[103], data[101],
                                data[99], data[97]
                                };


wire [7:0] parity;

assign parity[0]=  ~(^e0_data);
assign parity[2]=  ~(^e1_data);
assign parity[4]=  ~(^e2_data);
assign parity[6]=  ~(^e3_data);

assign parity[1]=  ~(^o0_data);
assign parity[3]=  ~(^o1_data);
assign parity[5]=  ~(^o2_data);
assign parity[7]=  ~(^o3_data);


endmodule