Simulation

Hi, AndrewS6:

Thanks. But there's another bug~

code 1:

--- Quote Start ---

initial begin

SYS_CLK <= 0;

$display($time, "SYS_CLK = 0");

forever# (SYS_CLK_PERIOD/2) SYS_CLK <= ~ SYS_CLK;

$display($time, "SYS_CLK reverse");

CD_PULSE <= 0;

$display($time, "CD_PULSE = 0");

forever# (CD_PULSE_PERIOD/2) CD_PULSE <= ~ CD_PULSE;

$display($time, "CD_PULSE reverse");

end

--- Quote End ---

http://www.alteraforum.com/forum/attachment.php?attachmentid=3821&stc=1&d=1300376027

code 2:

--- Quote Start ---

initial begin

SYS_CLK <= 0;

$display($time, "SYS_CLK = 0");

forever# (SYS_CLK_PERIOD/2) SYS_CLK <= ~ SYS_CLK;

$display($time, "SYS_CLK reverse");

end

initial begin

CD_PULSE <= 0;

$display($time, "CD_PULSE = 0");

forever# (CD_PULSE_PERIOD/2) CD_PULSE <= ~ CD_PULSE;

$display($time, "CD_PULSE reverse");

end

--- Quote End ---

http://www.alteraforum.com/forum/attachment.php?attachmentid=3822&stc=1&d=1300376034

I just put the CD_PULSE and SYS_CLK assignment in different initial block and the result is right. I am still confused about that. Hope you can help me with this.