address decoding in vhdl

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hello,

but to do the address decoding in vhdl, i dont have any idea how to write it..can someone guide me on how to do this ??

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It is very simple to write the VHDL code for an address decoder. A general code can be as follows:

2-to-4 address decoder: Using if-else construct

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if address = "00" then

selection_lines <= "0001";

elsif address = "01" then

selection_lines <= "0010";

elsif address = "10" then

selection_lines <= "0100";

else address = "11" then

selection_lines <= "1000";

end if;

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You can also use "case-select" and "when-else" constructs to code an address decoder.