[6] | 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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