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Altera_Forum
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14 years ago

multiple driver error during simulation

Hi I am doing a project and am stuck in the synthesis part in Quartus. The code was successfully compiled using icarus verilog software.But while compiling the code in Quartus , I get some error...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Hi Kaz

I have some doubts on your expalaination as follows:

switch_d <= switch; if switch /= switch_d then count <= 1; else count <= count + 1; end if;

1)by this are you detecting positive edge of switch

2)

output <= input(count);

what does this do?