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Altera_Forum's avatar
Altera_Forum
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8 years ago

What's the difference between these two pieces of simple code?

Do you think there is a difference in functionality between these codes? always @(posedge clk) begin A<=0; if (sel==0) A<=in_u; ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

Okay, so that simply means:

1) Assignment in different 'always' blocks --> they are evaluated in parallel, resulting in multiple driver error

2) Assignment in the same 'always' block --> they are evaluated in sequential, where it will reset initially before going into a MUX