module gpio_signal_buffering (
`ifdef USE_POWER_PINS
	vccd,
	vssd,
`endif
    mgmt_io_in_unbuf,
    mgmt_io_out_unbuf,
    mgmt_io_oeb_buf,
    mgmt_io_in_buf,
    mgmt_io_out_buf,
    mgmt_io_oeb_unbuf
);

`ifdef USE_POWER_PINS
	input  vccd;
	input  vssd;
`endif

    /* NOTE:  To match the indices of the same signals in the
     * top level, add 35 to all OEB lines and add 7 to all in and out lines
     */
    input  [30:0] mgmt_io_in_unbuf;
    input  [30:0] mgmt_io_out_unbuf;
    input  [2:0] mgmt_io_oeb_unbuf;
    output [2:0] mgmt_io_oeb_buf;
    output [30:0] mgmt_io_in_buf;
    output [30:0] mgmt_io_out_buf;

    /* Instantiate 95 + 95 + 6 = 196 buffers of size 8 */

    wire [195:0] buf_in;
    wire [195:0] buf_out;

    sky130_fd_sc_hd__buf_8 signal_buffers [195:0] (
	`ifdef USE_POWER_PINS
	    .VPWR(vccd),
	    .VGND(vssd),
	    .VPB(vccd),
	    .VNB(vssd),
	`endif
	.A(buf_in),
	.X(buf_out)
    );

    /* Now chain them all together */

    //----------------------------------------
    // mgmt_io_in, right-hand side
    //----------------------------------------

    assign buf_in[0] = mgmt_io_in_unbuf[0];
    assign mgmt_io_in_buf[0] = buf_out[0];

    assign buf_in[1] = mgmt_io_in_unbuf[1];
    assign mgmt_io_in_buf[1] = buf_out[1];

    assign buf_in[2] = mgmt_io_in_unbuf[2];
    assign mgmt_io_in_buf[2] = buf_out[2];

    assign buf_in[3] = mgmt_io_in_unbuf[3];
    assign mgmt_io_in_buf[3] = buf_out[3];

    assign buf_in[4] = mgmt_io_in_unbuf[4];
    assign mgmt_io_in_buf[4] = buf_out[4];

    assign buf_in[5] = mgmt_io_in_unbuf[5];
    assign mgmt_io_in_buf[5] = buf_out[5];

    assign buf_in[6] = mgmt_io_in_unbuf[6];
    assign buf_in[7] = buf_out[6];
    assign mgmt_io_in_buf[6] = buf_out[7];

    assign buf_in[8] = mgmt_io_in_unbuf[7];
    assign buf_in[9] = buf_out[8];
    assign mgmt_io_in_buf[7] = buf_out[9];

    assign buf_in[10] = mgmt_io_in_unbuf[8];
    assign buf_in[11] = buf_out[10];
    assign buf_in[12] = buf_out[11];
    assign mgmt_io_in_buf[8] = buf_out[12];

    assign buf_in[13] = mgmt_io_in_unbuf[9];
    assign buf_in[14] = buf_out[13];
    assign buf_in[15] = buf_out[14];
    assign mgmt_io_in_buf[9] = buf_out[15];

    assign buf_in[16] = mgmt_io_in_unbuf[10];
    assign buf_in[17] = buf_out[16];
    assign buf_in[18] = buf_out[17];
    assign mgmt_io_in_buf[10] = buf_out[18];

    assign buf_in[19] = mgmt_io_in_unbuf[11];
    assign buf_in[20] = buf_out[19];
    assign buf_in[21] = buf_out[20];
    assign buf_in[22] = buf_out[21];
    assign mgmt_io_in_buf[11] = buf_out[22];

    //----------------------------------------
    // mgmt_io_in, left-hand side
    //----------------------------------------

    assign buf_in[23] = mgmt_io_in_unbuf[12];
    assign buf_in[24] = buf_out[23];
    assign buf_in[25] = buf_out[24];
    assign buf_in[26] = buf_out[25];
    assign buf_in[27] = buf_out[26];
    assign buf_in[28] = buf_out[27];
    assign mgmt_io_in_buf[12] = buf_out[28];

    assign buf_in[29] = mgmt_io_in_unbuf[13];
    assign buf_in[30] = buf_out[29];
    assign buf_in[31] = buf_out[30];
    assign buf_in[32] = buf_out[31];
    assign buf_in[33] = buf_out[32];
    assign buf_in[34] = buf_out[33];
    assign mgmt_io_in_buf[13] = buf_out[34];

    assign buf_in[35] = mgmt_io_in_unbuf[14];
    assign buf_in[36] = buf_out[35];
    assign buf_in[37] = buf_out[36];
    assign buf_in[38] = buf_out[37];
    assign buf_in[39] = buf_out[38];
    assign buf_in[40] = buf_out[39];
    assign mgmt_io_in_buf[14] = buf_out[40];

    assign buf_in[41] = mgmt_io_in_unbuf[15];
    assign buf_in[42] = buf_out[41];
    assign buf_in[43] = buf_out[42];
    assign buf_in[44] = buf_out[43];
    assign buf_in[45] = buf_out[44];
    assign mgmt_io_in_buf[15] = buf_out[45];

    assign buf_in[46] = mgmt_io_in_unbuf[16];
    assign buf_in[47] = buf_out[46];
    assign buf_in[48] = buf_out[47];
    assign buf_in[49] = buf_out[48];
    assign buf_in[50] = buf_out[49];
    assign mgmt_io_in_buf[16] = buf_out[50];

    assign buf_in[51] = mgmt_io_in_unbuf[17];
    assign buf_in[52] = buf_out[51];
    assign buf_in[53] = buf_out[52];
    assign buf_in[54] = buf_out[53];
    assign mgmt_io_in_buf[17] = buf_out[54];

    assign buf_in[55] = mgmt_io_in_unbuf[18];
    assign buf_in[56] = buf_out[55];
    assign buf_in[57] = buf_out[56];
    assign buf_in[58] = buf_out[57];
    assign mgmt_io_in_buf[18] = buf_out[58];

    assign buf_in[59] = mgmt_io_in_unbuf[19];
    assign buf_in[60] = buf_out[59];
    assign buf_in[61] = buf_out[60];
    assign buf_in[62] = buf_out[61];
    assign mgmt_io_in_buf[19] = buf_out[62];

    assign buf_in[63] = mgmt_io_in_unbuf[20];
    assign buf_in[64] = buf_out[63];
    assign buf_in[65] = buf_out[64];
    assign buf_in[66] = buf_out[65];
    assign mgmt_io_in_buf[20] = buf_out[66];

    assign buf_in[67] = mgmt_io_in_unbuf[21];
    assign buf_in[68] = buf_out[67];
    assign buf_in[69] = buf_out[68];
    assign buf_in[70] = buf_out[69];
    assign mgmt_io_in_buf[21] = buf_out[70];

    assign buf_in[71] = mgmt_io_in_unbuf[22];
    assign buf_in[72] = buf_out[71];
    assign buf_in[73] = buf_out[72];
    assign buf_in[74] = buf_out[73];
    assign mgmt_io_in_buf[22] = buf_out[74];

    assign buf_in[75] = mgmt_io_in_unbuf[23];
    assign buf_in[76] = buf_out[75];
    assign buf_in[77] = buf_out[76];
    assign mgmt_io_in_buf[23] = buf_out[77];

    assign buf_in[78] = mgmt_io_in_unbuf[24];
    assign buf_in[79] = buf_out[78];
    assign buf_in[80] = buf_out[79];
    assign mgmt_io_in_buf[24] = buf_out[80];

    assign buf_in[81] = mgmt_io_in_unbuf[25];
    assign buf_in[82] = buf_out[81];
    assign buf_in[83] = buf_out[82];
    assign mgmt_io_in_buf[25] = buf_out[83];

    assign buf_in[84] = mgmt_io_in_unbuf[26];
    assign buf_in[85] = buf_out[84];
    assign buf_in[86] = buf_out[85];
    assign mgmt_io_in_buf[26] = buf_out[86];

    assign buf_in[87] = mgmt_io_in_unbuf[27];
    assign buf_in[88] = buf_out[87];
    assign mgmt_io_in_buf[27] = buf_out[88];

    assign buf_in[89] = mgmt_io_in_unbuf[28];
    assign buf_in[90] = buf_out[89];
    assign mgmt_io_in_buf[28] = buf_out[90];

    assign buf_in[91] = mgmt_io_in_unbuf[29];
    assign buf_in[92] = buf_out[91];
    assign mgmt_io_in_buf[29] = buf_out[92];

    assign buf_in[93] = mgmt_io_in_unbuf[30];
    assign buf_in[94] = buf_out[93];
    assign mgmt_io_in_buf[30] = buf_out[94];

    //----------------------------------------
    // mgmt_io_out, right-hand side
    //----------------------------------------

    assign buf_in[95] = mgmt_io_out_unbuf[0];
    assign mgmt_io_out_buf[0] = buf_out[95];

    assign buf_in[96] = mgmt_io_out_unbuf[1];
    assign mgmt_io_out_buf[1] = buf_out[96];

    assign buf_in[97] = mgmt_io_out_unbuf[2];
    assign mgmt_io_out_buf[2] = buf_out[97];

    assign buf_in[98] = mgmt_io_out_unbuf[3];
    assign mgmt_io_out_buf[3] = buf_out[98];

    assign buf_in[99] = mgmt_io_out_unbuf[4];
    assign mgmt_io_out_buf[4] = buf_out[99];

    assign buf_in[100] = mgmt_io_out_unbuf[5];
    assign mgmt_io_out_buf[5] = buf_out[100];

    assign buf_in[101] = mgmt_io_out_unbuf[6];
    assign buf_in[102] = buf_out[101];
    assign mgmt_io_out_buf[6] = buf_out[102];

    assign buf_in[103] = mgmt_io_out_unbuf[7];
    assign buf_in[104] = buf_out[103];
    assign mgmt_io_out_buf[7] = buf_out[104];

    assign buf_in[105] = mgmt_io_out_unbuf[8];
    assign buf_in[106] = buf_out[105];
    assign buf_in[107] = buf_out[106];
    assign mgmt_io_out_buf[8] = buf_out[107];

    assign buf_in[108] = mgmt_io_out_unbuf[9];
    assign buf_in[109] = buf_out[108];
    assign buf_in[110] = buf_out[109];
    assign mgmt_io_out_buf[9] = buf_out[110];

    assign buf_in[111] = mgmt_io_out_unbuf[10];
    assign buf_in[112] = buf_out[111];
    assign buf_in[113] = buf_out[112];
    assign mgmt_io_out_buf[10] = buf_out[113];

    assign buf_in[114] = mgmt_io_out_unbuf[11];
    assign buf_in[115] = buf_out[114];
    assign buf_in[116] = buf_out[115];
    assign buf_in[117] = buf_out[116];
    assign mgmt_io_out_buf[11] = buf_out[117];

    //----------------------------------------
    // mgmt_io_out, left-hand side
    //----------------------------------------

    assign buf_in[118] = mgmt_io_out_unbuf[12];
    assign buf_in[119] = buf_out[118];
    assign buf_in[120] = buf_out[119];
    assign buf_in[121] = buf_out[120];
    assign buf_in[122] = buf_out[121];
    assign buf_in[123] = buf_out[122];
    assign mgmt_io_out_buf[12] = buf_out[123];

    assign buf_in[124] = mgmt_io_out_unbuf[13];
    assign buf_in[125] = buf_out[124];
    assign buf_in[126] = buf_out[125];
    assign buf_in[127] = buf_out[126];
    assign buf_in[128] = buf_out[127];
    assign buf_in[129] = buf_out[128];
    assign mgmt_io_out_buf[13] = buf_out[129];

    assign buf_in[130] = mgmt_io_out_unbuf[14];
    assign buf_in[131] = buf_out[130];
    assign buf_in[132] = buf_out[131];
    assign buf_in[133] = buf_out[132];
    assign buf_in[134] = buf_out[133];
    assign buf_in[135] = buf_out[134];
    assign mgmt_io_out_buf[14] = buf_out[135];

    assign buf_in[136] = mgmt_io_out_unbuf[15];
    assign buf_in[137] = buf_out[136];
    assign buf_in[138] = buf_out[137];
    assign buf_in[139] = buf_out[138];
    assign buf_in[140] = buf_out[139];
    assign mgmt_io_out_buf[15] = buf_out[140];

    assign buf_in[141] = mgmt_io_out_unbuf[16];
    assign buf_in[142] = buf_out[141];
    assign buf_in[143] = buf_out[142];
    assign buf_in[144] = buf_out[143];
    assign buf_in[145] = buf_out[144];
    assign mgmt_io_out_buf[16] = buf_out[145];

    assign buf_in[146] = mgmt_io_out_unbuf[17];
    assign buf_in[147] = buf_out[146];
    assign buf_in[148] = buf_out[147];
    assign buf_in[149] = buf_out[148];
    assign mgmt_io_out_buf[17] = buf_out[149];

    assign buf_in[150] = mgmt_io_out_unbuf[18];
    assign buf_in[151] = buf_out[150];
    assign buf_in[152] = buf_out[151];
    assign buf_in[153] = buf_out[152];
    assign mgmt_io_out_buf[18] = buf_out[153];

    assign buf_in[154] = mgmt_io_out_unbuf[19];
    assign buf_in[155] = buf_out[154];
    assign buf_in[156] = buf_out[155];
    assign buf_in[157] = buf_out[156];
    assign mgmt_io_out_buf[19] = buf_out[157];

    assign buf_in[158] = mgmt_io_out_unbuf[20];
    assign buf_in[159] = buf_out[158];
    assign buf_in[160] = buf_out[159];
    assign buf_in[161] = buf_out[160];
    assign mgmt_io_out_buf[20] = buf_out[161];

    assign buf_in[162] = mgmt_io_out_unbuf[21];
    assign buf_in[163] = buf_out[162];
    assign buf_in[164] = buf_out[163];
    assign buf_in[165] = buf_out[164];
    assign mgmt_io_out_buf[21] = buf_out[165];

    assign buf_in[166] = mgmt_io_out_unbuf[22];
    assign buf_in[167] = buf_out[166];
    assign buf_in[168] = buf_out[167];
    assign buf_in[169] = buf_out[168];
    assign mgmt_io_out_buf[22] = buf_out[169];

    assign buf_in[170] = mgmt_io_out_unbuf[23];
    assign buf_in[171] = buf_out[170];
    assign buf_in[172] = buf_out[171];
    assign mgmt_io_out_buf[23] = buf_out[172];

    assign buf_in[173] = mgmt_io_out_unbuf[24];
    assign buf_in[174] = buf_out[173];
    assign buf_in[175] = buf_out[174];
    assign mgmt_io_out_buf[24] = buf_out[175];

    assign buf_in[176] = mgmt_io_out_unbuf[25];
    assign buf_in[177] = buf_out[176];
    assign buf_in[178] = buf_out[177];
    assign mgmt_io_out_buf[25] = buf_out[178];

    assign buf_in[179] = mgmt_io_out_unbuf[26];
    assign buf_in[180] = buf_out[179];
    assign buf_in[181] = buf_out[180];
    assign mgmt_io_out_buf[26] = buf_out[181];

    assign buf_in[182] = mgmt_io_out_unbuf[27];
    assign buf_in[183] = buf_out[182];
    assign mgmt_io_out_buf[27] = buf_out[183];

    assign buf_in[184] = mgmt_io_out_unbuf[28];
    assign buf_in[185] = buf_out[184];
    assign mgmt_io_out_buf[28] = buf_out[185];

    assign buf_in[186] = mgmt_io_out_unbuf[29];
    assign buf_in[187] = buf_out[186];
    assign mgmt_io_out_buf[29] = buf_out[187];

    assign buf_in[188] = mgmt_io_out_unbuf[30];
    assign buf_in[189] = buf_out[188];
    assign mgmt_io_out_buf[30] = buf_out[189];

    //----------------------------------------
    // mgmt_io_oeb, left-hand side (only)
    //----------------------------------------

    assign buf_in[190] = mgmt_io_oeb_unbuf[0];
    assign buf_in[191] = buf_out[190];
    assign mgmt_io_oeb_buf[0] = buf_out[191];

    assign buf_in[192] = mgmt_io_oeb_unbuf[1];
    assign buf_in[193] = buf_out[192];
    assign mgmt_io_oeb_buf[1] = buf_out[193];

    assign buf_in[194] = mgmt_io_oeb_unbuf[2];
    assign buf_in[195] = buf_out[194];
    assign mgmt_io_oeb_buf[2] = buf_out[195];

  sky130_ef_sc_hd__decap_12 sigbuf_decaps [100:0] (
	`ifdef USE_POWER_PINS
	    .VPWR(vccd),
	    .VGND(vssd),
	    .VPB(vccd),
	    .VNB(vssd)
	`endif
  );

endmodule