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Altera_Forum's avatar
Altera_Forum
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14 years ago

Vhdl codes for counter to start and purse

Hi, I need urgent help on how to design a stopwatch that can stop/purse using vhdl code. I will really appreciate any urgent reply to this. Thanks. Waiting for your replies.
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Add the following lines: 

 --pseudocode
-- on the clock edge
if start = '1' then -- or may be '0' depending on key logic
    start_L <= '1';
elsif stop = '1' then
     start_L <= '0';
end if;
if start_L = '1' then
   count <= count + 1;
end if;