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Altera_Forum's avatar
Altera_Forum
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15 years ago

Problem with a simple bi-direcional counter simulation

Hello this is my code module count_moda # (parameter modulus = 100) ( input clk, aclr_n, updown, output reg q ); initial q = 0; always @(posedge clk, negedge aclr_n) begin ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

> if (q == modulus-1) > q <= 8'd0;

this script should be

if( updoun )

begin

if( q == (modulus-1) )

q <= 8'h0;

end

else

begin

if( q == 8'h0 )

q <= (modulus-1) ; end

I think this is obvious too.

you haven't written reset logic for negative direction.