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Altera_Forum's avatar
Altera_Forum
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16 years ago

why the simulation result is differenct between fork join and begin end?

this is the testbench in an495. why can not use begin ... end. initial begin arst <= 1'b0; // resetting the contoller initially # 250 arst <= 1'b1; ider...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

The begin-end-block also assigns the values to the nets simultaneously if non-blocking assignments are used (as it's the case in the example). The difference is that all timing assignments are with respect to the block entry time in case of fork-join and with respect to the previous timing assignment in case of begin-end.