address decoding in vhdl

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hello vizzie,

see my attachments(uart and zpu in vhdl and bdf files). thx

regards,

bruno

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I saw your files and have following suggestions:

1.Write logic to decode the out_mem_addr, out_mem_writeEnable and out_mem_readEnable to control tx_data_en, rx_data_en and rest of the uart. For example:

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if out_mem_addr = "uart_address" then --where uart-address is pre-defined

if out_mem_writeEnable = '1' then

tx_data_en <= '1';

tx_data_in <= relavant data;

else

tx_data_en <= '0';

tx_data_in <= (others => '0');

end if;

--Similarly decode out_mem_readEnable with rx_data_en and rx_data_out etc.

else

--do nothing or reset the uart.

end if;

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2. This would be one way to decode the address of uart.