1 | //---------------------------------------------------------------------------- |
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2 | // user_logic.v - module |
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3 | //---------------------------------------------------------------------------- |
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4 | // |
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5 | // *************************************************************************** |
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6 | // ** Copyright (c) 1995-2012 Xilinx, Inc. All rights reserved. ** |
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7 | // ** ** |
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8 | // ** Xilinx, Inc. ** |
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9 | // ** XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" ** |
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10 | // ** AS A COURTESY TO YOU, SOLELY FOR USE IN DEVELOPING PROGRAMS AND ** |
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11 | // ** SOLUTIONS FOR XILINX DEVICES. BY PROVIDING THIS DESIGN, CODE, ** |
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12 | // ** OR INFORMATION AS ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, ** |
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13 | // ** APPLICATION OR STANDARD, XILINX IS MAKING NO REPRESENTATION ** |
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14 | // ** THAT THIS IMPLEMENTATION IS FREE FROM ANY CLAIMS OF INFRINGEMENT, ** |
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15 | // ** AND YOU ARE RESPONSIBLE FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE ** |
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16 | // ** FOR YOUR IMPLEMENTATION. XILINX EXPRESSLY DISCLAIMS ANY ** |
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17 | // ** WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE ** |
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18 | // ** IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR ** |
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19 | // ** REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF ** |
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20 | // ** INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS ** |
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21 | // ** FOR A PARTICULAR PURPOSE. ** |
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22 | // ** ** |
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23 | // *************************************************************************** |
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24 | // |
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25 | //---------------------------------------------------------------------------- |
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26 | // Filename: user_logic.v |
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27 | // Version: 1.00.a |
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28 | // Description: User logic module. |
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29 | // Date: Tue Oct 30 09:50:47 2018 (by Create and Import Peripheral Wizard) |
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30 | // Verilog Standard: Verilog-2001 |
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31 | //---------------------------------------------------------------------------- |
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32 | // Naming Conventions: |
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33 | // active low signals: "*_n" |
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34 | // clock signals: "clk", "clk_div#", "clk_#x" |
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35 | // reset signals: "rst", "rst_n" |
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36 | // generics: "C_*" |
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37 | // user defined types: "*_TYPE" |
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38 | // state machine next state: "*_ns" |
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39 | // state machine current state: "*_cs" |
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40 | // combinatorial signals: "*_com" |
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41 | // pipelined or register delay signals: "*_d#" |
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42 | // counter signals: "*cnt*" |
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43 | // clock enable signals: "*_ce" |
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44 | // internal version of output port: "*_i" |
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45 | // device pins: "*_pin" |
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46 | // ports: "- Names begin with Uppercase" |
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47 | // processes: "*_PROCESS" |
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48 | // component instantiations: "<ENTITY_>I_<#|FUNC>" |
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49 | //---------------------------------------------------------------------------- |
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50 | |
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51 | `uselib lib=unisims_ver |
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52 | `uselib lib=proc_common_v3_00_a |
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53 | |
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54 | module user_logic |
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55 | ( |
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56 | // -- ADD USER PORTS BELOW THIS LINE --------------- |
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57 | intrA_out, |
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58 | intrB_out, |
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59 | // --USER ports added here |
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60 | // -- ADD USER PORTS ABOVE THIS LINE --------------- |
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61 | |
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62 | // -- DO NOT EDIT BELOW THIS LINE ------------------ |
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63 | // -- Bus protocol ports, do not add to or delete |
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64 | Bus2IP_Clk, // Bus to IP clock |
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65 | Bus2IP_Resetn, // Bus to IP reset |
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66 | Bus2IP_Data, // Bus to IP data bus |
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67 | Bus2IP_BE, // Bus to IP byte enables |
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68 | Bus2IP_RdCE, // Bus to IP read chip enable |
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69 | Bus2IP_WrCE, // Bus to IP write chip enable |
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70 | IP2Bus_Data, // IP to Bus data bus |
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71 | IP2Bus_RdAck, // IP to Bus read transfer acknowledgement |
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72 | IP2Bus_WrAck, // IP to Bus write transfer acknowledgement |
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73 | IP2Bus_Error // IP to Bus error response |
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74 | // -- DO NOT EDIT ABOVE THIS LINE ------------------ |
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75 | ); // user_logic |
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76 | |
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77 | // -- ADD USER PARAMETERS BELOW THIS LINE ------------ |
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78 | // --USER parameters added here |
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79 | // -- ADD USER PARAMETERS ABOVE THIS LINE ------------ |
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80 | |
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81 | // -- DO NOT EDIT BELOW THIS LINE -------------------- |
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82 | // -- Bus protocol parameters, do not add to or delete |
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83 | parameter C_NUM_REG = 16; |
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84 | parameter C_SLV_DWIDTH = 32; |
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85 | // -- DO NOT EDIT ABOVE THIS LINE -------------------- |
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86 | |
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87 | // -- ADD USER PORTS BELOW THIS LINE ----------------- |
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88 | |
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89 | output reg intrA_out = 0; |
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90 | output reg intrB_out = 0; |
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91 | |
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92 | // --USER ports added here |
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93 | // -- ADD USER PORTS ABOVE THIS LINE ----------------- |
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94 | |
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95 | // -- DO NOT EDIT BELOW THIS LINE -------------------- |
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96 | // -- Bus protocol ports, do not add to or delete |
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97 | input Bus2IP_Clk; |
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98 | input Bus2IP_Resetn; |
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99 | input [C_SLV_DWIDTH-1 : 0] Bus2IP_Data; |
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100 | input [C_SLV_DWIDTH/8-1 : 0] Bus2IP_BE; |
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101 | input [C_NUM_REG-1 : 0] Bus2IP_RdCE; |
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102 | input [C_NUM_REG-1 : 0] Bus2IP_WrCE; |
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103 | output [C_SLV_DWIDTH-1 : 0] IP2Bus_Data; |
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104 | output IP2Bus_RdAck; |
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105 | output IP2Bus_WrAck; |
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106 | output IP2Bus_Error; |
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107 | // -- DO NOT EDIT ABOVE THIS LINE -------------------- |
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108 | |
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109 | //---------------------------------------------------------------------------- |
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110 | // Implementation |
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111 | //---------------------------------------------------------------------------- |
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112 | |
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113 | // --USER nets declarations added here, as needed for user logic |
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114 | |
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115 | wire [31:0] sw_state0; |
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116 | wire [31:0] sw_state1; |
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117 | |
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118 | wire [31:0] sw_state0_maskA; |
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119 | wire [31:0] sw_state1_maskA; |
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120 | |
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121 | wire [31:0] sw_state0_maskB; |
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122 | wire [31:0] sw_state1_maskB; |
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123 | |
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124 | wire intrA_en, intrB_en; |
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125 | |
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126 | wire [31:0] reg0_rd; |
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127 | |
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128 | // Nets for user logic slave model s/w accessible register example |
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129 | reg [C_SLV_DWIDTH-1 : 0] slv_reg0 = 0; |
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130 | reg [C_SLV_DWIDTH-1 : 0] slv_reg1 = 0; |
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131 | reg [C_SLV_DWIDTH-1 : 0] slv_reg2 = 0; |
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132 | reg [C_SLV_DWIDTH-1 : 0] slv_reg3 = 0; |
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133 | reg [C_SLV_DWIDTH-1 : 0] slv_reg4 = 0; |
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134 | reg [C_SLV_DWIDTH-1 : 0] slv_reg5 = 0; |
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135 | reg [C_SLV_DWIDTH-1 : 0] slv_reg6 = 0; |
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136 | reg [C_SLV_DWIDTH-1 : 0] slv_reg7 = 0; |
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137 | reg [C_SLV_DWIDTH-1 : 0] slv_reg8 = 0; |
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138 | reg [C_SLV_DWIDTH-1 : 0] slv_reg9 = 0; |
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139 | reg [C_SLV_DWIDTH-1 : 0] slv_reg10 = 0; |
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140 | reg [C_SLV_DWIDTH-1 : 0] slv_reg11 = 0; |
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141 | reg [C_SLV_DWIDTH-1 : 0] slv_reg12 = 0; |
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142 | reg [C_SLV_DWIDTH-1 : 0] slv_reg13 = 0; |
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143 | reg [C_SLV_DWIDTH-1 : 0] slv_reg14 = 0; |
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144 | reg [C_SLV_DWIDTH-1 : 0] slv_reg15 = 0; |
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145 | wire [15 : 0] slv_reg_write_sel; |
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146 | wire [15 : 0] slv_reg_read_sel; |
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147 | reg [C_SLV_DWIDTH-1 : 0] slv_ip2bus_data = 0; |
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148 | wire slv_read_ack; |
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149 | wire slv_write_ack; |
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150 | integer byte_index, bit_index; |
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151 | |
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152 | // USER logic implementation added here |
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153 | |
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154 | /* Address map: |
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155 | HDL is coded [MSB:LSB] = [31:0], per Xilinx's convention for AXI peripherals |
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156 | regX[31] maps to 0x80000000 in C driver |
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157 | regX[ 0] maps to 0x00000001 in C driver |
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158 | |
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159 | 0: RO/RW: Control/status register |
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160 | [ 0] = Enable (active high) for intrA output |
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161 | [ 1] = Enable (active high) for intrB output |
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162 | [ 28] = (RO) current intrA_out value |
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163 | [ 29] = (RO) current intrB_out value |
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164 | |
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165 | 1: RW: Software state register 0 |
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166 | 2: RW: Software state register 1 |
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167 | |
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168 | 3: RW: Bitmask for sw state reg 0 asserting intrA |
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169 | 4: RW: Bitmask for sw state reg 1 asserting intrA |
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170 | 5: RW: Bitmask for sw state reg 0 asserting intrB |
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171 | 6: RW: Bitmask for sw state reg 1 asserting intrB |
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172 | |
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173 | */ |
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174 | |
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175 | assign reg0_rd[31:0] = {2'b0, intrB_out, intrA_out, 26'b0, intrB_en, intrA_en}; |
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176 | |
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177 | assign intrA_en = slv_reg0[0]; |
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178 | assign intrB_en = slv_reg0[1]; |
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179 | |
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180 | assign sw_state0[31:0] = slv_reg1; |
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181 | assign sw_state1[31:0] = slv_reg2; |
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182 | |
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183 | assign sw_state0_maskA[31:0] = slv_reg3; |
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184 | assign sw_state1_maskA[31:0] = slv_reg4; |
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185 | assign sw_state0_maskB[31:0] = slv_reg5; |
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186 | assign sw_state1_maskB[31:0] = slv_reg6; |
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187 | |
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188 | reg sw_intA = 0; |
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189 | reg sw_intB = 0; |
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190 | |
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191 | always @(posedge Bus2IP_Clk) |
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192 | begin |
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193 | sw_intA <= (|(sw_state0 & sw_state0_maskA)) | (|(sw_state1 & sw_state1_maskA)); |
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194 | sw_intB <= (|(sw_state0 & sw_state0_maskB)) | (|(sw_state1 & sw_state1_maskB)); |
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195 | |
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196 | intrA_out <= sw_intA; |
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197 | intrB_out <= sw_intB; |
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198 | end |
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199 | |
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200 | // ------------------------------------------------------ |
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201 | // Example code to read/write user logic slave model s/w accessible registers |
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202 | // |
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203 | // Note: |
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204 | // The example code presented here is to show you one way of reading/writing |
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205 | // software accessible registers implemented in the user logic slave model. |
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206 | // Each bit of the Bus2IP_WrCE/Bus2IP_RdCE signals is configured to correspond |
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207 | // to one software accessible register by the top level template. For example, |
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208 | // if you have four 32 bit software accessible registers in the user logic, |
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209 | // you are basically operating on the following memory mapped registers: |
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210 | // |
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211 | // Bus2IP_WrCE/Bus2IP_RdCE Memory Mapped Register |
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212 | // "1000" C_BASEADDR + 0x0 |
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213 | // "0100" C_BASEADDR + 0x4 |
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214 | // "0010" C_BASEADDR + 0x8 |
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215 | // "0001" C_BASEADDR + 0xC |
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216 | // |
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217 | // ------------------------------------------------------ |
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218 | |
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219 | assign |
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220 | slv_reg_write_sel = Bus2IP_WrCE[15:0], |
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221 | slv_reg_read_sel = Bus2IP_RdCE[15:0], |
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222 | slv_write_ack = Bus2IP_WrCE[0] || Bus2IP_WrCE[1] || Bus2IP_WrCE[2] || Bus2IP_WrCE[3] || Bus2IP_WrCE[4] || Bus2IP_WrCE[5] || Bus2IP_WrCE[6] || Bus2IP_WrCE[7] || Bus2IP_WrCE[8] || Bus2IP_WrCE[9] || Bus2IP_WrCE[10] || Bus2IP_WrCE[11] || Bus2IP_WrCE[12] || Bus2IP_WrCE[13] || Bus2IP_WrCE[14] || Bus2IP_WrCE[15], |
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223 | slv_read_ack = Bus2IP_RdCE[0] || Bus2IP_RdCE[1] || Bus2IP_RdCE[2] || Bus2IP_RdCE[3] || Bus2IP_RdCE[4] || Bus2IP_RdCE[5] || Bus2IP_RdCE[6] || Bus2IP_RdCE[7] || Bus2IP_RdCE[8] || Bus2IP_RdCE[9] || Bus2IP_RdCE[10] || Bus2IP_RdCE[11] || Bus2IP_RdCE[12] || Bus2IP_RdCE[13] || Bus2IP_RdCE[14] || Bus2IP_RdCE[15]; |
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224 | |
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225 | // implement slave model register(s) |
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226 | always @( posedge Bus2IP_Clk ) |
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227 | begin |
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228 | |
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229 | if ( Bus2IP_Resetn == 1'b0 ) |
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230 | begin |
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231 | slv_reg0 <= 0; |
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232 | slv_reg1 <= 0; |
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233 | slv_reg2 <= 0; |
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234 | slv_reg3 <= 0; |
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235 | slv_reg4 <= 0; |
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236 | slv_reg5 <= 0; |
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237 | slv_reg6 <= 0; |
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238 | slv_reg7 <= 0; |
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239 | slv_reg8 <= 0; |
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240 | slv_reg9 <= 0; |
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241 | slv_reg10 <= 0; |
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242 | slv_reg11 <= 0; |
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243 | slv_reg12 <= 0; |
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244 | slv_reg13 <= 0; |
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245 | slv_reg14 <= 0; |
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246 | slv_reg15 <= 0; |
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247 | end |
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248 | else |
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249 | case ( slv_reg_write_sel ) |
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250 | 16'b1000000000000000 : |
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251 | for ( byte_index = 0; byte_index <= (C_SLV_DWIDTH/8)-1; byte_index = byte_index+1 ) |
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252 | if ( Bus2IP_BE[byte_index] == 1 ) |
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253 | slv_reg0[(byte_index*8) +: 8] <= Bus2IP_Data[(byte_index*8) +: 8]; |
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254 | 16'b0100000000000000 : |
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255 | for ( byte_index = 0; byte_index <= (C_SLV_DWIDTH/8)-1; byte_index = byte_index+1 ) |
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256 | if ( Bus2IP_BE[byte_index] == 1 ) |
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257 | slv_reg1[(byte_index*8) +: 8] <= Bus2IP_Data[(byte_index*8) +: 8]; |
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258 | 16'b0010000000000000 : |
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259 | for ( byte_index = 0; byte_index <= (C_SLV_DWIDTH/8)-1; byte_index = byte_index+1 ) |
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260 | if ( Bus2IP_BE[byte_index] == 1 ) |
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261 | slv_reg2[(byte_index*8) +: 8] <= Bus2IP_Data[(byte_index*8) +: 8]; |
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262 | 16'b0001000000000000 : |
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263 | for ( byte_index = 0; byte_index <= (C_SLV_DWIDTH/8)-1; byte_index = byte_index+1 ) |
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264 | if ( Bus2IP_BE[byte_index] == 1 ) |
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265 | slv_reg3[(byte_index*8) +: 8] <= Bus2IP_Data[(byte_index*8) +: 8]; |
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266 | 16'b0000100000000000 : |
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267 | for ( byte_index = 0; byte_index <= (C_SLV_DWIDTH/8)-1; byte_index = byte_index+1 ) |
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268 | if ( Bus2IP_BE[byte_index] == 1 ) |
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269 | slv_reg4[(byte_index*8) +: 8] <= Bus2IP_Data[(byte_index*8) +: 8]; |
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270 | 16'b0000010000000000 : |
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271 | for ( byte_index = 0; byte_index <= (C_SLV_DWIDTH/8)-1; byte_index = byte_index+1 ) |
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272 | if ( Bus2IP_BE[byte_index] == 1 ) |
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273 | slv_reg5[(byte_index*8) +: 8] <= Bus2IP_Data[(byte_index*8) +: 8]; |
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274 | 16'b0000001000000000 : |
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275 | for ( byte_index = 0; byte_index <= (C_SLV_DWIDTH/8)-1; byte_index = byte_index+1 ) |
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276 | if ( Bus2IP_BE[byte_index] == 1 ) |
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277 | slv_reg6[(byte_index*8) +: 8] <= Bus2IP_Data[(byte_index*8) +: 8]; |
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278 | 16'b0000000100000000 : |
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279 | for ( byte_index = 0; byte_index <= (C_SLV_DWIDTH/8)-1; byte_index = byte_index+1 ) |
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280 | if ( Bus2IP_BE[byte_index] == 1 ) |
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281 | slv_reg7[(byte_index*8) +: 8] <= Bus2IP_Data[(byte_index*8) +: 8]; |
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282 | 16'b0000000010000000 : |
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283 | for ( byte_index = 0; byte_index <= (C_SLV_DWIDTH/8)-1; byte_index = byte_index+1 ) |
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284 | if ( Bus2IP_BE[byte_index] == 1 ) |
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285 | slv_reg8[(byte_index*8) +: 8] <= Bus2IP_Data[(byte_index*8) +: 8]; |
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286 | 16'b0000000001000000 : |
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287 | for ( byte_index = 0; byte_index <= (C_SLV_DWIDTH/8)-1; byte_index = byte_index+1 ) |
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288 | if ( Bus2IP_BE[byte_index] == 1 ) |
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289 | slv_reg9[(byte_index*8) +: 8] <= Bus2IP_Data[(byte_index*8) +: 8]; |
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290 | 16'b0000000000100000 : |
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291 | for ( byte_index = 0; byte_index <= (C_SLV_DWIDTH/8)-1; byte_index = byte_index+1 ) |
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292 | if ( Bus2IP_BE[byte_index] == 1 ) |
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293 | slv_reg10[(byte_index*8) +: 8] <= Bus2IP_Data[(byte_index*8) +: 8]; |
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294 | 16'b0000000000010000 : |
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295 | for ( byte_index = 0; byte_index <= (C_SLV_DWIDTH/8)-1; byte_index = byte_index+1 ) |
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296 | if ( Bus2IP_BE[byte_index] == 1 ) |
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297 | slv_reg11[(byte_index*8) +: 8] <= Bus2IP_Data[(byte_index*8) +: 8]; |
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298 | 16'b0000000000001000 : |
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299 | for ( byte_index = 0; byte_index <= (C_SLV_DWIDTH/8)-1; byte_index = byte_index+1 ) |
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300 | if ( Bus2IP_BE[byte_index] == 1 ) |
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301 | slv_reg12[(byte_index*8) +: 8] <= Bus2IP_Data[(byte_index*8) +: 8]; |
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302 | 16'b0000000000000100 : |
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303 | for ( byte_index = 0; byte_index <= (C_SLV_DWIDTH/8)-1; byte_index = byte_index+1 ) |
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304 | if ( Bus2IP_BE[byte_index] == 1 ) |
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305 | slv_reg13[(byte_index*8) +: 8] <= Bus2IP_Data[(byte_index*8) +: 8]; |
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306 | 16'b0000000000000010 : |
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307 | for ( byte_index = 0; byte_index <= (C_SLV_DWIDTH/8)-1; byte_index = byte_index+1 ) |
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308 | if ( Bus2IP_BE[byte_index] == 1 ) |
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309 | slv_reg14[(byte_index*8) +: 8] <= Bus2IP_Data[(byte_index*8) +: 8]; |
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310 | 16'b0000000000000001 : |
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311 | for ( byte_index = 0; byte_index <= (C_SLV_DWIDTH/8)-1; byte_index = byte_index+1 ) |
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312 | if ( Bus2IP_BE[byte_index] == 1 ) |
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313 | slv_reg15[(byte_index*8) +: 8] <= Bus2IP_Data[(byte_index*8) +: 8]; |
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314 | default : begin |
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315 | slv_reg0 <= slv_reg0; |
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316 | slv_reg1 <= slv_reg1; |
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317 | slv_reg2 <= slv_reg2; |
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318 | slv_reg3 <= slv_reg3; |
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319 | slv_reg4 <= slv_reg4; |
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320 | slv_reg5 <= slv_reg5; |
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321 | slv_reg6 <= slv_reg6; |
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322 | slv_reg7 <= slv_reg7; |
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323 | slv_reg8 <= slv_reg8; |
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324 | slv_reg9 <= slv_reg9; |
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325 | slv_reg10 <= slv_reg10; |
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326 | slv_reg11 <= slv_reg11; |
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327 | slv_reg12 <= slv_reg12; |
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328 | slv_reg13 <= slv_reg13; |
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329 | slv_reg14 <= slv_reg14; |
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330 | slv_reg15 <= slv_reg15; |
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331 | end |
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332 | endcase |
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333 | |
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334 | end // SLAVE_REG_WRITE_PROC |
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335 | |
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336 | // implement slave model register read mux |
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337 | always @( slv_reg_read_sel or slv_reg0 or slv_reg1 or slv_reg2 or slv_reg3 or slv_reg4 or slv_reg5 or slv_reg6 or slv_reg7 or slv_reg8 or slv_reg9 or slv_reg10 or slv_reg11 or slv_reg12 or slv_reg13 or slv_reg14 or slv_reg15 ) |
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338 | begin |
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339 | |
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340 | case ( slv_reg_read_sel ) |
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341 | 16'b1000000000000000 : slv_ip2bus_data <= reg0_rd; |
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342 | 16'b0100000000000000 : slv_ip2bus_data <= slv_reg1; |
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343 | 16'b0010000000000000 : slv_ip2bus_data <= slv_reg2; |
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344 | 16'b0001000000000000 : slv_ip2bus_data <= slv_reg3; |
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345 | 16'b0000100000000000 : slv_ip2bus_data <= slv_reg4; |
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346 | 16'b0000010000000000 : slv_ip2bus_data <= slv_reg5; |
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347 | 16'b0000001000000000 : slv_ip2bus_data <= slv_reg6; |
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348 | 16'b0000000100000000 : slv_ip2bus_data <= slv_reg7; |
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349 | 16'b0000000010000000 : slv_ip2bus_data <= slv_reg8; |
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350 | 16'b0000000001000000 : slv_ip2bus_data <= slv_reg9; |
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351 | 16'b0000000000100000 : slv_ip2bus_data <= slv_reg10; |
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352 | 16'b0000000000010000 : slv_ip2bus_data <= slv_reg11; |
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353 | 16'b0000000000001000 : slv_ip2bus_data <= slv_reg12; |
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354 | 16'b0000000000000100 : slv_ip2bus_data <= slv_reg13; |
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355 | 16'b0000000000000010 : slv_ip2bus_data <= slv_reg14; |
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356 | 16'b0000000000000001 : slv_ip2bus_data <= slv_reg15; |
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357 | default : slv_ip2bus_data <= 0; |
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358 | endcase |
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359 | |
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360 | end // SLAVE_REG_READ_PROC |
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361 | |
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362 | // ------------------------------------------------------------ |
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363 | // Example code to drive IP to Bus signals |
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364 | // ------------------------------------------------------------ |
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365 | |
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366 | assign IP2Bus_Data = (slv_read_ack == 1'b1) ? slv_ip2bus_data : 0 ; |
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367 | assign IP2Bus_WrAck = slv_write_ack; |
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368 | assign IP2Bus_RdAck = slv_read_ack; |
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369 | assign IP2Bus_Error = 0; |
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370 | |
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371 | endmodule |
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