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Altera_Forum's avatar
Altera_Forum
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15 years ago

Help!! need help for VHDL car detect system.

hey guys, i'm new with vhdl and i have to write the following programm, and i need help. 1.To detect number of car. 2.output s is the current number of car. 3.output a is the previous numb...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

usually, you can just store it in an internal register:

if load = '0' then

a <= count_sig;

end if;

or some other stored version of count_sig.

I am concerned you are not using a real clock. Using an input as a clock (by looking for the rising_edge. can cause timing problems.