'X' - Forcing Unknown

[Matt North]

Hi,

I have an entity which has a synchronous reset. Therefore the output is 'X'
until a f_edge(clk) occurs with rst='1'.
What would the value of 'X' be in hardware before the clock edge '0', '1' or
either?????

Thanks.

 

[Paul Uiterlinden]

Matt North wrote:

Hi,

I have an entity which has a synchronous reset. Therefore the output is 'X'
until a f_edge(clk) occurs with rst='1'.
What would the value of 'X' be in hardware before the clock edge '0', '1' or
either?????

Either a '0' or a '1'.

Paul.

 

[Neo]

X is dependent on the start up condition of the transistor and can be
0 or 1 or anything inbetween.