diff options
Diffstat (limited to 'testsuite/gna/bug040/add_204.vhd')
-rw-r--r-- | testsuite/gna/bug040/add_204.vhd | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/testsuite/gna/bug040/add_204.vhd b/testsuite/gna/bug040/add_204.vhd new file mode 100644 index 000000000..ba94a29c0 --- /dev/null +++ b/testsuite/gna/bug040/add_204.vhd @@ -0,0 +1,33 @@ +library ieee; +use ieee.std_logic_1164.all; + +library ieee; +use ieee.numeric_std.all; + +entity add_204 is + port ( + output : out std_logic_vector(24 downto 0); + in_b : in std_logic_vector(24 downto 0); + in_a : in std_logic_vector(24 downto 0) + ); +end add_204; + +architecture augh of add_204 is + + signal carry_inA : std_logic_vector(26 downto 0); + signal carry_inB : std_logic_vector(26 downto 0); + signal carry_res : std_logic_vector(26 downto 0); + +begin + + -- To handle the CI input, the operation is '1' + CI + -- If CI is not present, the operation is '1' + '0' + carry_inA <= '0' & in_a & '1'; + carry_inB <= '0' & in_b & '0'; + -- Compute the result + carry_res <= std_logic_vector(unsigned(carry_inA) + unsigned(carry_inB)); + + -- Set the outputs + output <= carry_res(25 downto 1); + +end architecture; |