Joel, The second process is a combinatorial process. All signals must be assigned a value for all conditions, or a latch is generated, which presumes that the value of the last condition should be kept in the absence of a new assignment.
e.g. when Request_Bus =>
if( data_valid = '1') then req
Thanks for the explaination. I seem to recall something about this from my class. I guess I should have taken better notes.
Joel
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