Vhdl?

Hi gicolleta,

the statement works right but too complicated to such simplest task :)

1. std_logic_vector'("000000000 000000000000000000000") & (address) - produce 32bit vector from 2-bit address?

2. compare it with 32'h0 and get one-bit result: to_std_logic((((std_logic_vector'("000000000 000000000000000000000") & (address)) = std_logic_vector'("0000000000000000000000000000000 0")))

3. replicate result upto data_out length vector : REP_A(0/1, 13)

4. Finally just bit-wise AND data_out with '0 or '1 vector - propagate data_out to mux or not.

Alternative:

read_mux_out <= (others => '0') when address = "00" else data_out;