![]() ![]() With your example, I think the single always block is most obvious and readable, so that should be preferred. ![]() Thus don't write hardware tailored code with the purpose of utilizing resources the best way, except if you are aware of a specific problem, which is probably not the case with your example code. ![]() The purpose of having an advanced synthesis/simulation tool is that the tool handles the tedious task of using resources the best way, so you can write the code the easy way. Use blocking assignment for combinatorial logic, and non-blocking assignment for sequential design to avoid race conditions between different always blocks driven by the same clock.įinally, benefit from using an advanced synthesis/simulation tool, and write the code in a way that is most obvious and readable, in order to reduce risk of bugs, and make future maintenance easier. Sequential logic models the process of reading and writing to latch registers. 2: Unable to determine number of words or word size in RAM. If RAM inferencing intended, write to one port per process. Reason is one or more of the following : 1: RAM has multiple writes via different ports in same process. You two examples already adhere to this rule. Block RAM or DRAM implementation is not possible see log for reasons. Topics include number systems, Boolean algebra, logic minimization, circuit design, memory elements, and finite state machine design. Each always block should either implement combinatorial logic or sequential design, but the sequential design may contain expressions that result in combinatorial logic, as long as the result that is assigned is either combinatorial logic or sequential design for all results of the always block. Basic tools, methods and procedures to design combinational and sequential digital circuits and systems. ![]()
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