wishbone_bram_wrapper ram_addr_bits is 1 bit off

log2ceil() returns the number of bits required to store a value, so we
need to pass in memory_size-1, not memory_size.

Every other user of log2ceil() gets this right.

Signed-off-by: Anton Blanchard <anton@linux.ibm.com>
Anton Blanchard 2 years ago committed by Anton Blanchard
parent 30fd936c12
commit b5accb78b2

@ -24,7 +24,7 @@ entity wishbone_bram_wrapper is
end entity wishbone_bram_wrapper;

architecture behaviour of wishbone_bram_wrapper is
constant ram_addr_bits : integer := log2ceil(MEMORY_SIZE) - 3;
constant ram_addr_bits : integer := log2ceil(MEMORY_SIZE-1) - 3;

-- RAM interface
signal ram_addr : std_logic_vector(ram_addr_bits - 1 downto 0);