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[/] [System09/] [rev_86/] [rtl/] [Spartan2/] [ram2k_b4.vhd] - Blame information for rev 172

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Line No. Rev Author Line
1 19 dilbert57 
--
2 
-- Ram2k.vhd
3 
--
4 
-- 2K Byte RAM made out of 4 x 512 byte Block RAMs.
5 
-- John Kent
6 
-- 11 February 2004
7 
--
8 
library IEEE;
9 
use IEEE.STD_LOGIC_1164.ALL;
10 
use IEEE.STD_LOGIC_ARITH.ALL;
11 
use IEEE.STD_LOGIC_UNSIGNED.ALL;
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library unisim;
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        use unisim.all;
14 
 
15 
entity ram_2k is
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    Port (
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       clk   : in  std_logic;
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       rst   : in  std_logic;
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       cs    : in  std_logic;
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       rw    : in  std_logic;
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       addr  : in  std_logic_vector (10 downto 0);
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       wdata : in  std_logic_vector (7 downto 0);
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       rdata : out std_logic_vector (7 downto 0)
24 
    );
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end ram_2k;
26 
 
27 
architecture rtl of ram_2k is
28 
 
29 
   signal we       : std_logic;
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   signal reset    : std_logic;
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   signal rdata0   : std_logic_vector (7 downto 0);
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   signal rdata1   : std_logic_vector (7 downto 0);
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   signal rdata2   : std_logic_vector (7 downto 0);
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   signal rdata3   : std_logic_vector (7 downto 0);
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   signal ena0     : std_logic;
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   signal ena1     : std_logic;
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   signal ena2     : std_logic;
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   signal ena3     : std_logic;
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40 
   component RAMB4_S8
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    generic (
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      INIT_00, INIT_01, INIT_02, INIT_03,
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      INIT_04, INIT_05, INIT_06, INIT_07,
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      INIT_08, INIT_09, INIT_0A, INIT_0B,
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      INIT_0C, INIT_0D, INIT_0E, INIT_0F : bit_vector (255 downto 0) :=
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      x"0000000000000000000000000000000000000000000000000000000000000000"
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    );
48 
 
49 
    port (
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      clk, we, en, rst : in std_logic;
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      addr :  in std_logic_vector(8 downto 0);
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      di   :  in std_logic_vector(7 downto 0);
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      do   : out std_logic_vector(7 downto 0)
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    );
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  end component;
56 
 
57 
begin
58 
 
59 
  MY_RAM0 : RAMB4_S8
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    generic map (
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INIT_00 => x"000000FF0000001010101010101010003E1C7F7F3E1C08000000FF0000000000",
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INIT_01 => x"202020202020200000FF0000000000000000000000FF000000000000FF000000",
63 
INIT_02 => x"0000E0100808080000000304080808080810E000000000040404040404040420",
64 
INIT_03 => x"808080808080FF80402010080402010102040810204080FF8080808080808000",
65 
INIT_04 => x"081C3E7F7F7F3600FF000000000000003C7E7E7E7E3C0001010101010101FF80",
66 
INIT_05 => x"3C424242423C0081422418182442810808040300000000404040404040404000",
67 
INIT_06 => x"0808FF0808080800081C3E7F3E1C0802020202020202020008082A772A1C0800",
68 
INIT_07 => x"03070F1F3F7FFF001414543E010000080808080808080850A050A050A050A008",
69 
INIT_08 => x"24247E247E242400000000002424240008000008080808000000000000000000",
70 
INIT_09 => x"00000000100804003A444A30484830004626100864620000083C0A1C281E0800",
71 
INIT_0A => x"0008083E08080000082A1C3E1C2A080020100808081020000408101010080400",
72 
INIT_0B => x"402010080402000018180000000000000000007E000000100808000000000000",
73 
INIT_0C => x"3C42021C02423C007E40300C02423C003E080808281808003C42625A46423C00",
74 
INIT_0D => x"1010100804427E003C42427C40201C003844020478407E0004047E24140C0400",
75 
INIT_0E => x"080800000800000000080000080000003804023E42423C003C42423C42423C00",
76 
INIT_0F => x"1000100C02423C0070180C060C18700000007E007E0000000E18306030180E10"
77 
    )
78 
 
79 
    port map ( clk => clk,
80 
                    en  => ena0,
81 
                                   we  => we,
82 
                                   rst => reset,
83 
                                   addr(8 downto 0) => addr(8 downto 0),
84 
               di(7 downto 0)   => wdata(7 downto 0),
85 
                                   do(7 downto 0)   => rdata0(7 downto 0)
86 
        );
87 
 
88 
  MY_RAM1 : RAMB4_S8
89 
    generic map (
90 
 
91 
INIT_00 => x"001C22404040221C007C22223C22227C004242427E422418001E204C564A221C",
92 
INIT_01 => x"001C22424E40221C004040407840407E007E40407840407E0078242222222478",
93 
INIT_02 => x"0042444870484442003844040404040E001C08080808081C004242427E424242",
94 
INIT_03 => x"0018244242422418004242464A526242004242425A5A6642007E404040404040",
95 
INIT_04 => x"003C42023C40423C004244487C42427C001A244A42422418004040407C42427C",
96 
INIT_05 => x"0042665A5A4242420018182424424242003C424242424242000808080808083E",
97 
INIT_06 => x"003C20202020203C007E40201804027E000808081C2222220042422418244242",
98 
INIT_07 => x"0010207F20100000080808082A1C0800003C04040404043C006E70103C10100C",
99 
INIT_08 => x"003C4240423C0000005C6242625C4040003A443C04380000001E204C564A221C",
100 
INIT_09 => x"3C023A46463A0000001010107C10120C003C407E423C0000003A4642463A0202",
101 
INIT_0A => x"004468504844404038440404040C0004001C08080818000800424242625C4040",
102 
INIT_0B => x"003C4242423C000000424242625C00000049494949760000001C080808080818",
103 
INIT_0C => x"007C023C403E000000404040625C000002023A46463A000040405C62625C0000",
104 
INIT_0D => x"00364949494100000018244242420000003A464242420000000C1210107C1010",
105 
INIT_0E => x"003C20202020203C007E2018047E00003C023A46424200000042241824420000",
106 
INIT_0F => x"0010207F20100000080808082A1C0800003C04040404043C006E70103C10100C"
107 
    )
108 
 
109 
    port map ( clk => clk,
110 
                    en  => ena1,
111 
                                   we  => we,
112 
                                   rst => reset,
113 
                                   addr(8 downto 0) => addr(8 downto 0),
114 
               di(7 downto 0)   => wdata(7 downto 0),
115 
                                   do(7 downto 0)   => rdata1(7 downto 0)
116 
        );
117 
 
118 
  MY_RAM2 : RAMB4_S8
119 
    generic map (
120 
INIT_00 => x"000000FF0000001010101010101010003E1C7F7F3E1C08000000FF0000000000",
121 
INIT_01 => x"202020202020200000FF0000000000000000000000FF000000000000FF000000",
122 
INIT_02 => x"0000E0100808080000000304080808080810E000000000040404040404040420",
123 
INIT_03 => x"808080808080FF80402010080402010102040810204080FF8080808080808000",
124 
INIT_04 => x"081C3E7F7F7F3600FF000000000000003C7E7E7E7E3C0001010101010101FF80",
125 
INIT_05 => x"3C424242423C0081422418182442810808040300000000404040404040404000",
126 
INIT_06 => x"0808FF0808080800081C3E7F3E1C0802020202020202020008082A772A1C0800",
127 
INIT_07 => x"03070F1F3F7FFF001414543E010000080808080808080850A050A050A050A008",
128 
INIT_08 => x"24247E247E242400000000002424240008000008080808000000000000000000",
129 
INIT_09 => x"00000000100804003A444A30484830004626100864620000083C0A1C281E0800",
130 
INIT_0A => x"0008083E08080000082A1C3E1C2A080020100808081020000408101010080400",
131 
INIT_0B => x"402010080402000018180000000000000000007E000000100808000000000000",
132 
INIT_0C => x"3C42021C02423C007E40300C02423C003E080808281808003C42625A46423C00",
133 
INIT_0D => x"1010100804427E003C42427C40201C003844020478407E0004047E24140C0400",
134 
INIT_0E => x"080800000800000000080000080000003804023E42423C003C42423C42423C00",
135 
INIT_0F => x"1000100C02423C0070180C060C18700000007E007E0000000E18306030180E10"
136 
    )
137 
 
138 
    port map ( clk => clk,
139 
                    en  => ena2,
140 
                                   we  => we,
141 
                                   rst => reset,
142 
                                   addr(8 downto 0) => addr(8 downto 0),
143 
               di(7 downto 0)   => wdata(7 downto 0),
144 
                                   do(7 downto 0)   => rdata2(7 downto 0)
145 
        );
146 
 
147 
  MY_RAM3 : RAMB4_S8
148 
    generic map (
149 
 
150 
INIT_00 => x"001C22404040221C007C22223C22227C004242427E422418001E204C564A221C",
151 
INIT_01 => x"001C22424E40221C004040407840407E007E40407840407E0078242222222478",
152 
INIT_02 => x"0042444870484442003844040404040E001C08080808081C004242427E424242",
153 
INIT_03 => x"0018244242422418004242464A526242004242425A5A6642007E404040404040",
154 
INIT_04 => x"003C42023C40423C004244487C42427C001A244A42422418004040407C42427C",
155 
INIT_05 => x"0042665A5A4242420018182424424242003C424242424242000808080808083E",
156 
INIT_06 => x"003C20202020203C007E40201804027E000808081C2222220042422418244242",
157 
INIT_07 => x"0010207F20100000080808082A1C0800003C04040404043C006E70103C10100C",
158 
INIT_08 => x"003C4240423C0000005C6242625C4040003A443C04380000001E204C564A221C",
159 
INIT_09 => x"3C023A46463A0000001010107C10120C003C407E423C0000003A4642463A0202",
160 
INIT_0A => x"004468504844404038440404040C0004001C08080818000800424242625C4040",
161 
INIT_0B => x"003C4242423C000000424242625C00000049494949760000001C080808080818",
162 
INIT_0C => x"007C023C403E000000404040625C000002023A46463A000040405C62625C0000",
163 
INIT_0D => x"00364949494100000018244242420000003A464242420000000C1210107C1010",
164 
INIT_0E => x"003C20202020203C007E2018047E00003C023A46424200000042241824420000",
165 
INIT_0F => x"0010207F20100000080808082A1C0800003C04040404043C006E70103C10100C"
166 
    )
167 
 
168 
    port map ( clk => clk,
169 
                    en  => ena3,
170 
                                   we  => we,
171 
                                   rst => reset,
172 
                                   addr(8 downto 0) => addr(8 downto 0),
173 
               di(7 downto 0)   => wdata(7 downto 0),
174 
                                   do(7 downto 0)   => rdata3(7 downto 0)
175 
        );
176 
 
177 
my_ram_2k : process ( clk, rst, cs, rw, addr, rdata0, rdata1, rdata2, rdata3 )
178 
begin
179 
         case addr(10 downto 9) is
180 
         when "00" =>
181 
      ena0 <= cs;
182 
           ena1 <= '0';
183 
      ena2 <= '0';
184 
           ena3 <= '0';
185 
                rdata <= rdata0;
186 
         when "01" =>
187 
      ena0 <= '0';
188 
           ena1 <= cs;
189 
      ena2 <= '0';
190 
           ena3 <= '0';
191 
                rdata <= rdata1;
192 
         when "10" =>
193 
      ena0 <= '0';
194 
           ena1 <= '0';
195 
      ena2 <= cs;
196 
           ena3 <= '0';
197 
                rdata <= rdata2;
198 
         when "11" =>
199 
      ena0 <= '0';
200 
           ena1 <= '0';
201 
      ena2 <= '0';
202 
           ena3 <= cs;
203 
                rdata <= rdata3;
204 
         when others =>
205 
      null;
206 
         end case;
207 
 
208 
         we <= cs and (not rw);
209 
    reset <= rst;
210 
 
211 
end process;
212 
 
213 
end;
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