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Diffstat (limited to 'testsuite/synth/mem01/sram02.vhdl')
-rw-r--r-- | testsuite/synth/mem01/sram02.vhdl | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/testsuite/synth/mem01/sram02.vhdl b/testsuite/synth/mem01/sram02.vhdl new file mode 100644 index 000000000..dc9be662f --- /dev/null +++ b/testsuite/synth/mem01/sram02.vhdl @@ -0,0 +1,29 @@ +library ieee; +use ieee.std_logic_1164.all; +use ieee.numeric_std.all; + +entity sram02 is + port ( + clk_i : std_logic; + addr_i : std_logic_vector(3 downto 0); + data_i : std_logic_vector(7 downto 0); + data_o : out std_logic_vector(7 downto 0); + wen_i : std_logic); +end sram02; + +architecture behav of sram02 is +begin + process (clk_i, addr_i) + type mem_type is array (0 to 15) of std_logic_vector (7 downto 0); + variable mem : mem_type; + variable addr : natural range mem_type'range; + begin + if rising_edge(clk_i) then + addr := to_integer (unsigned (addr_i)); + if wen_i = '1' then + mem (addr) := data_i; + end if; + data_o <= mem (addr); + end if; + end process; +end behav; |