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sdram 控制器的verilog 实现

            <net is_signal_inverted="no" name="user_interface:inst3|ram_addr[0]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|ram_addr[1]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|ram_addr[2]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|ram_addr[3]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|ram_addr[4]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|ram_addr[5]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|ram_addr[6]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|ram_addr[7]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|ram_addr[8]"/>
          </bus>
          <bus is_signal_inverted="no" link="all" name="user_interface:inst3|data_from_sdram" order="lsb_to_msb" radix="hex" state="collapse" type="combinatorial">
            <net is_signal_inverted="no" name="user_interface:inst3|data_from_sdram[0]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_from_sdram[1]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_from_sdram[2]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_from_sdram[3]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_from_sdram[4]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_from_sdram[5]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_from_sdram[6]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_from_sdram[7]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_from_sdram[8]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_from_sdram[9]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_from_sdram[10]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_from_sdram[11]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_from_sdram[12]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_from_sdram[13]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_from_sdram[14]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_from_sdram[15]"/>
          </bus>
          <bus is_signal_inverted="no" link="all" name="user_interface:inst3|rom_addr" order="lsb_to_msb" radix="unsigned_dec" state="collapse" type="register">
            <net is_signal_inverted="no" name="user_interface:inst3|rom_addr[0]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|rom_addr[1]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|rom_addr[2]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|rom_addr[3]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|rom_addr[4]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|rom_addr[5]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|rom_addr[6]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|rom_addr[7]"/>
          </bus>
          <bus is_signal_inverted="no" link="all" name="user_interface:inst3|data_to_sdram" order="lsb_to_msb" radix="hex" state="collapse" type="combinatorial">
            <net is_signal_inverted="no" name="user_interface:inst3|data_to_sdram[0]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_to_sdram[1]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_to_sdram[2]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_to_sdram[3]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_to_sdram[4]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_to_sdram[5]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_to_sdram[6]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_to_sdram[7]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_to_sdram[8]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_to_sdram[9]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_to_sdram[10]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_to_sdram[11]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_to_sdram[12]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_to_sdram[13]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_to_sdram[14]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|data_to_sdram[15]"/>
          </bus>
          <net is_signal_inverted="no" name="user_interface:inst3|read_ack"/>
          <net is_signal_inverted="no" name="user_interface:inst3|read_req"/>
          <net is_signal_inverted="no" name="user_interface:inst3|r_data_valid"/>
          <net is_signal_inverted="no" name="user_interface:inst3|setup_done"/>
          <bus is_signal_inverted="no" link="all" name="user_interface:inst3|sys_addr" order="lsb_to_msb" radix="hex" state="collapse" type="combinatorial">
            <net is_signal_inverted="no" name="user_interface:inst3|sys_addr[0]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|sys_addr[1]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|sys_addr[2]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|sys_addr[3]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|sys_addr[4]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|sys_addr[5]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|sys_addr[6]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|sys_addr[7]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|sys_addr[8]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|sys_addr[9]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|sys_addr[10]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|sys_addr[11]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|sys_addr[12]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|sys_addr[13]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|sys_addr[14]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|sys_addr[15]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|sys_addr[16]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|sys_addr[17]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|sys_addr[18]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|sys_addr[19]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|sys_addr[20]"/>
            <net is_signal_inverted="no" name="user_interface:inst3|sys_addr[21]"/>
          </bus>
          <bus is_signal_inverted="no" link="all" name="user_state" order="lsb_to_msb" radix="hex" state="collapse" type="combinatorial">
            <net is_signal_inverted="no" name="user_interface:inst3|user_state.gen_read_req"/>
            <net is_signal_inverted="no" name="user_interface:inst3|user_state.gen_write_req"/>
            <net is_signal_inverted="no" name="user_interface:inst3|user_state.idle"/>
            <net is_signal_inverted="no" name="user_interface:inst3|user_state.wait_read_ack"/>
            <net is_signal_inverted="no" name="user_interface:inst3|user_state.wait_setup"/>
            <net is_signal_inverted="no" name="user_interface:inst3|user_state.wait_write_ack"/>
          </bus>
          <net is_signal_inverted="no" name="user_interface:inst3|write_ack"/>
          <net is_signal_inverted="no" name="user_interface:inst3|write_req"/>
          <net is_signal_inverted="no" name="user_interface:inst3|w_data_valid"/>
          <bus is_signal_inverted="no" link="all" name="sdram_top:inst|main_fsm:U0|c_state" order="lsb_to_msb" radix="unsigned_dec" state="collapse" type="combinatorial">
            <net is_signal_inverted="no" name="sdram_top:inst|main_fsm:U0|c_state[0]"/>
            <net is_signal_inverted="no" name="sdram_top:inst|main_fsm:U0|c_state[1]"/>
            <net is_signal_inverted="no" name="sdram_top:inst|main_fsm:U0|c_state[2]"/>
            <net is_signal_inverted="no" name="sdram_top:inst|main_fsm:U0|c_state[3]"/>
          </bus>
          <bus is_signal_inverted="no" link="all" name="sdram_top:inst|main_fsm:U0|clk_m_cnt" order="lsb_to_msb" radix="unsigned_dec" state="collapse" type="register">
            <net is_signal_inverted="no" name="sdram_top:inst|main_fsm:U0|clk_m_cnt[0]"/>
            <net is_signal_inverted="no" name="sdram_top:inst|main_fsm:U0|clk_m_cnt[1]"/>
            <net is_signal_inverted="no" name="sdram_top:inst|main_fsm:U0|clk_m_cnt[2]"/>
            <net is_signal_inverted="no" name="sdram_top:inst|main_fsm:U0|clk_m_cnt[3]"/>
            <net is_signal_inverted="no" name="sdram_top:inst|main_fsm:U0|clk_m_cnt[4]"/>
            <net is_signal_inverted="no" name="sdram_top:inst|main_fsm:U0|clk_m_cnt[5]"/>
            <net is_signal_inverted="no" name="sdram_top:inst|main_fsm:U0|clk_m_cnt[6]"/>
            <net is_signal_inverted="no" name="sdram_top:inst|main_fsm:U0|clk_m_cnt[7]"/>
            <net is_signal_inverted="no" name="sdram_top:inst|main_fsm:U0|clk_m_cnt[8]"/>
          </bus>
        </setup_view>
      </presentation>
      <trigger CRC="699F640D" global_temp="1" name="trigger: 2008/09/15 16:45:08  #1" position="pre" power_up_trigger_mode="false" segment_size="1" trigger_in="rising edge" trigger_out="active high" trigger_type="circular">
        <power_up_trigger position="pre" trigger_in="dont_care" trigger_out="active high"/>
        <events use_custom_flow_control="no">
          <level enabled="yes" name="condition1" type="basic">
            <power_up enabled="yes">
            </power_up>
            <op_node/>
          </level>
        </events>
        <log>
          <data global_temp="1" name="log: 2008/09/15 17:29:04  #0" power_up_mode="false" sample_depth="512" 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