1 | // ========== Copyright Header Begin ========================================== |
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2 | // |
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3 | // OpenSPARC T1 Processor File: bw_r_rf32x108.v |
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4 | // Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. |
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5 | // DO NOT ALTER OR REMOVE COPYRIGHT NOTICES. |
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6 | // |
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7 | // The above named program is free software; you can redistribute it and/or |
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8 | // modify it under the terms of the GNU General Public |
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9 | // License version 2 as published by the Free Software Foundation. |
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10 | // |
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11 | // The above named program is distributed in the hope that it will be |
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12 | // useful, but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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14 | // General Public License for more details. |
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15 | // |
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16 | // You should have received a copy of the GNU General Public |
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17 | // License along with this work; if not, write to the Free Software |
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18 | // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. |
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19 | // |
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20 | // ========== Copyright Header End ============================================ |
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21 | //////////////////////////////////////////////////////////////////////// |
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22 | // 32 X 108 R1 W1 RF macro |
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23 | // REad/Write ports can be accessed in PH1 only. |
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24 | //////////////////////////////////////////////////////////////////////// |
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25 | |
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26 | module bw_r_rf32x108(/*AUTOARG*/ |
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27 | // Outputs |
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28 | dout, so, |
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29 | // Inputs |
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30 | din, rd_adr1, rd_adr2, sel_rdaddr1, wr_adr, read_en, wr_en, |
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31 | word_wen, rst_tri_en, rclk, se, si, reset_l, sehold |
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32 | ); |
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33 | |
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34 | input [107:0] din; // data input |
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35 | input [4:0] rd_adr1; // read addr1 |
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36 | input [4:0] rd_adr2; // read addr2 |
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37 | input sel_rdaddr1; // sel read addr1 |
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38 | input [4:0] wr_adr; // write addr |
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39 | input read_en; |
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40 | input wr_en ; // used in conjunction with |
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41 | // word_wen and byte_wen |
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42 | input [3:0] word_wen; // word enables ( if you don't use these |
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43 | // tie them to Vdd ) |
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44 | input rst_tri_en ; // used to gate off write during scan. |
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45 | input rclk; |
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46 | input se, si ; |
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47 | input reset_l; |
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48 | input sehold; // hold scan in data. |
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49 | |
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50 | output [107:0] dout; |
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51 | output so; |
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52 | |
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53 | |
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54 | // local signals |
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55 | reg [107:0] wrdata_d1 ; |
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56 | reg [3:0] word_wen_d1; |
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57 | reg [4:0] rdptr_d1, wrptr_d1; |
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58 | reg ren_d1; |
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59 | reg wr_en_d1; |
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60 | reg rst_tri_en_d1; |
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61 | |
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62 | |
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63 | |
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64 | `ifdef DEFINE_0IN |
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65 | reg so; |
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66 | `else |
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67 | reg [107:0] dout; |
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68 | |
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69 | wire [122:0] scan_out ; |
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70 | |
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71 | // memory array |
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72 | reg [107:0] inq_ary [31:0]; |
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73 | `endif |
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74 | // internal variable |
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75 | integer i; |
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76 | reg [107:0] temp, data_in, tmp_dout; |
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77 | |
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78 | `ifdef DEFINE_0IN |
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79 | wire [107:0] bit_en_d1; |
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80 | |
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81 | assign bit_en_d1[0] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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82 | assign bit_en_d1[1] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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83 | assign bit_en_d1[2] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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84 | assign bit_en_d1[3] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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85 | |
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86 | assign bit_en_d1[4] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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87 | assign bit_en_d1[5] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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88 | assign bit_en_d1[6] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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89 | assign bit_en_d1[7] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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90 | |
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91 | assign bit_en_d1[8] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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92 | assign bit_en_d1[9] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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93 | assign bit_en_d1[10] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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94 | assign bit_en_d1[11] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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95 | |
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96 | assign bit_en_d1[12] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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97 | assign bit_en_d1[13] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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98 | assign bit_en_d1[14] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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99 | assign bit_en_d1[15] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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100 | |
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101 | assign bit_en_d1[16] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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102 | assign bit_en_d1[17] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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103 | assign bit_en_d1[18] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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104 | assign bit_en_d1[19] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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105 | |
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106 | assign bit_en_d1[20] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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107 | assign bit_en_d1[21] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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108 | assign bit_en_d1[22] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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109 | assign bit_en_d1[23] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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110 | |
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111 | assign bit_en_d1[24] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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112 | assign bit_en_d1[25] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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113 | assign bit_en_d1[26] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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114 | assign bit_en_d1[27] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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115 | |
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116 | assign bit_en_d1[28] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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117 | assign bit_en_d1[29] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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118 | assign bit_en_d1[30] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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119 | assign bit_en_d1[31] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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120 | |
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121 | assign bit_en_d1[32] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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122 | assign bit_en_d1[33] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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123 | assign bit_en_d1[34] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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124 | assign bit_en_d1[35] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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125 | |
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126 | assign bit_en_d1[36] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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127 | assign bit_en_d1[37] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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128 | assign bit_en_d1[38] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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129 | assign bit_en_d1[39] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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130 | |
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131 | assign bit_en_d1[40] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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132 | assign bit_en_d1[41] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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133 | assign bit_en_d1[42] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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134 | assign bit_en_d1[43] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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135 | |
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136 | assign bit_en_d1[44] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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137 | assign bit_en_d1[45] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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138 | assign bit_en_d1[46] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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139 | assign bit_en_d1[47] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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140 | |
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141 | assign bit_en_d1[48] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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142 | assign bit_en_d1[49] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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143 | assign bit_en_d1[50] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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144 | assign bit_en_d1[51] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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145 | |
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146 | assign bit_en_d1[52] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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147 | assign bit_en_d1[53] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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148 | assign bit_en_d1[54] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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149 | assign bit_en_d1[55] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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150 | |
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151 | assign bit_en_d1[56] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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152 | assign bit_en_d1[57] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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153 | assign bit_en_d1[58] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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154 | assign bit_en_d1[59] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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155 | |
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156 | assign bit_en_d1[60] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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157 | assign bit_en_d1[61] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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158 | assign bit_en_d1[62] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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159 | assign bit_en_d1[63] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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160 | |
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161 | assign bit_en_d1[64] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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162 | assign bit_en_d1[65] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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163 | assign bit_en_d1[66] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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164 | assign bit_en_d1[67] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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165 | |
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166 | assign bit_en_d1[68] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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167 | assign bit_en_d1[69] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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168 | assign bit_en_d1[70] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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169 | assign bit_en_d1[71] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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170 | |
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171 | assign bit_en_d1[72] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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172 | assign bit_en_d1[73] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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173 | assign bit_en_d1[74] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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174 | assign bit_en_d1[75] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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175 | |
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176 | assign bit_en_d1[76] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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177 | assign bit_en_d1[77] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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178 | assign bit_en_d1[78] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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179 | assign bit_en_d1[79] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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180 | |
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181 | assign bit_en_d1[80] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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182 | assign bit_en_d1[81] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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183 | assign bit_en_d1[82] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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184 | assign bit_en_d1[83] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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185 | |
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186 | assign bit_en_d1[84] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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187 | assign bit_en_d1[85] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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188 | assign bit_en_d1[86] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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189 | assign bit_en_d1[87] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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190 | |
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191 | assign bit_en_d1[88] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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192 | assign bit_en_d1[89] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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193 | assign bit_en_d1[90] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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194 | assign bit_en_d1[91] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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195 | |
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196 | assign bit_en_d1[92] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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197 | assign bit_en_d1[93] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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198 | assign bit_en_d1[94] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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199 | assign bit_en_d1[95] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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200 | |
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201 | assign bit_en_d1[96] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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202 | assign bit_en_d1[97] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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203 | assign bit_en_d1[98] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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204 | assign bit_en_d1[99] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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205 | |
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206 | assign bit_en_d1[100] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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207 | assign bit_en_d1[101] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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208 | assign bit_en_d1[102] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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209 | assign bit_en_d1[103] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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210 | |
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211 | assign bit_en_d1[104] = word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ; |
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212 | assign bit_en_d1[105] = word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ; |
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213 | assign bit_en_d1[106] = word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ; |
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214 | assign bit_en_d1[107] = word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ; |
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215 | |
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216 | `else |
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217 | |
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218 | `endif |
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219 | |
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220 | always @(posedge rclk ) begin |
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221 | |
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222 | wrdata_d1 <= (sehold)? wrdata_d1 :din; |
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223 | word_wen_d1 <= (sehold)? word_wen_d1 : word_wen ; |
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224 | wrptr_d1 <= (sehold)? wrptr_d1 :wr_adr; |
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225 | ren_d1 <= (sehold)? ren_d1 : read_en; |
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226 | wr_en_d1 <= (sehold)? wr_en_d1 : wr_en; |
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227 | rdptr_d1 <= (sehold)? rdptr_d1 : ( (sel_rdaddr1)? rd_adr1: rd_adr2 ) ; |
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228 | rst_tri_en_d1 <= rst_tri_en ; // this is a dummy flop ( only used as a trigger ) |
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229 | end |
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230 | |
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231 | |
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232 | |
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233 | `ifdef DEFINE_0IN |
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234 | rf32x108 rf32x108 ( .rclk(rclk), .radr(rdptr_d1), .wadr(wrptr_d1), .ren(ren_d1), |
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235 | .we(reset_l), .wm(bit_en_d1), .din(wrdata_d1), .dout(dout) ); |
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236 | `else |
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237 | |
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238 | ///////////////////////////////////////////////////////////////////////////////// |
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239 | // Read Operation |
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240 | ///////////////////////////////////////////////////////////////////////////////// |
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241 | |
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242 | always @(/*AUTOSENSE*/ /*memory or*/ rdptr_d1 or ren_d1 or reset_l |
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243 | or rst_tri_en_d1 or word_wen_d1 or wr_en_d1 or wrptr_d1) |
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244 | begin |
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245 | if (reset_l) |
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246 | begin |
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247 | if (ren_d1 ) |
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248 | begin |
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249 | |
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250 | // Checking for Xs on the rd pointer input when read is enabled |
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251 | `ifdef INNO_MUXEX |
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252 | `else |
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253 | if(rdptr_d1 == 5'bx) begin |
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254 | `ifdef MODELSIM |
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255 | $display("rf_error"," read pointer error %h ", rdptr_d1[4:0]); |
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256 | `else |
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257 | $error("rf_error"," read pointer error %h ", rdptr_d1[4:0]); |
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258 | `endif |
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259 | end |
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260 | `endif |
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261 | |
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262 | |
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263 | tmp_dout = inq_ary[rdptr_d1] ; |
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264 | |
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265 | for(i=0; i< 108; i=i+4) begin |
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266 | |
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267 | if((rdptr_d1 == wrptr_d1)) begin |
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268 | dout[i] = ( word_wen_d1[0] & wr_en_d1 & ~rst_tri_en )? |
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269 | 1'bx : tmp_dout[i] ; |
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270 | dout[i+1] = ( word_wen_d1[1] & wr_en_d1 & ~rst_tri_en )? |
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271 | 1'bx : tmp_dout[i+1] ; |
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272 | dout[i+2] = ( word_wen_d1[2] & wr_en_d1 & ~rst_tri_en )? |
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273 | 1'bx : tmp_dout[i+2] ; |
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274 | dout[i+3] = ( word_wen_d1[3] & wr_en_d1 & ~rst_tri_en )? |
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275 | 1'bx : tmp_dout[i+3] ; |
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276 | end |
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277 | else begin |
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278 | dout[i] = tmp_dout[i] ; |
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279 | dout[i+1] = tmp_dout[i+1] ; |
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280 | dout[i+2] = tmp_dout[i+2] ; |
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281 | dout[i+3] = tmp_dout[i+3] ; |
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282 | end |
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283 | |
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284 | end // of for |
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285 | |
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286 | end |
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287 | |
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288 | |
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289 | end // of if reset_l |
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290 | |
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291 | else dout = 108'b0 ; |
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292 | end |
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293 | |
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294 | ///////////////////////////////////////////////////////////////////////////////// |
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295 | // Write Operation |
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296 | ///////////////////////////////////////////////////////////////////////////////// |
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297 | |
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298 | always @(/*AUTOSENSE*/reset_l or rst_tri_en_d1 or word_wen_d1 or wr_en_d1 |
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299 | or wrdata_d1 or wrptr_d1) |
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300 | begin |
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301 | if ( reset_l) |
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302 | begin |
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303 | // Checking for Xs on bit write enables that are derived from |
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304 | // the word_enables and wr enable input. |
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305 | `ifdef INNO_MUXEX |
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306 | `else |
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307 | if((word_wen_d1 & {4{wr_en_d1 & ~rst_tri_en}}) == 4'bx ) begin |
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308 | `ifdef MODELSIM |
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309 | $display("rf_error"," write enable error %h ", word_wen_d1[3:0]); |
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310 | `else |
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311 | $error("rf_error"," write enable error %h ", word_wen_d1[3:0]); |
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312 | `endif |
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313 | end |
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314 | `endif |
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315 | |
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316 | if(wr_en_d1 & ~rst_tri_en) begin |
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317 | |
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318 | `ifdef INNO_MUXEX |
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319 | `else |
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320 | // Checking for Xs on the wr pointer input when write is enabled |
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321 | if(wrptr_d1 == 5'bx) begin |
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322 | `ifdef MODELSIM |
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323 | $display("rf_error"," read pointer error %h ", wrptr_d1[4:0]); |
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324 | `else |
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325 | $error("rf_error"," read pointer error %h ", wrptr_d1[4:0]); |
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326 | `endif |
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327 | end |
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328 | `endif |
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329 | |
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330 | temp = inq_ary[wrptr_d1]; |
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331 | for (i=0; i<108; i=i+4) begin |
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332 | data_in[i] = ( word_wen_d1[0] & wr_en_d1 & ~rst_tri_en ) ? |
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333 | wrdata_d1[i] : temp[i] ; |
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334 | data_in[i+1] = ( word_wen_d1[1] & wr_en_d1 & ~rst_tri_en ) ? |
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335 | wrdata_d1[i+1] : temp[i+1] ; |
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336 | data_in[i+2] = ( word_wen_d1[2] & wr_en_d1 & ~rst_tri_en ) ? |
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337 | wrdata_d1[i+2] : temp[i+2] ; |
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338 | data_in[i+3] = ( word_wen_d1[3] & wr_en_d1 & ~rst_tri_en ) ? |
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339 | wrdata_d1[i+3] : temp[i+3] ; |
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340 | end |
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341 | inq_ary[wrptr_d1] = data_in ; |
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342 | |
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343 | end |
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344 | |
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345 | end |
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346 | end // always @ (... |
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347 | |
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348 | `endif |
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349 | |
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350 | |
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351 | endmodule // rf_32x108 |
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352 | |
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353 | |
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354 | |
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