Download Applied Formal Verification: For Digital Circuit Design by Douglas Perry, Harry Foster PDF

By Douglas Perry, Harry Foster

Meant for layout engineers, this ebook introduces normal verification ideas, compares them with formal verification strategies, and offers directions for developing formal excessive point requirement. The authors talk about formal verification innovations for either utilized Boolean and sequential verification, formal estate checking, the method of constructing a proper try out plan, and country aid suggestions. The appendices record regularly occurring PSL statements for prime point necessities and related necessities laid out in process Verilog syntax.

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At time 50 the flip-flop will capture the 1 value on DIN and reflect that value on output Q. This value will be maintained until time 90 where a 0 value on DIN is captured. When the number of signals is small and the complexity of the design is minimal, the designer can easily verify the design by visual inspection. However, as the design complexity increases, this is no longer possible, especially as the designer runs multiple tests over and over while fixing design errors. Therefore most designers will create a testbench to drive the design and monitor the results of the design.

8 ASIC Processor-Based Accelerator ASIC1 ASIC2 ASIC3 ASIC4 ASIC5 ASIC6 ASIC7 ASIC8 ASIC9 accelerators execute much faster than other hardware accelerators, typically reaching speeds of 100,000 to 500,000 clocks per second. This speed allows tests that took hours to run on an HDL software simulator to run in seconds. The Bad News All this speed comes at a tremendous cost. Processor-based accelerators are very expensive because of all the hardware necessary to build them. These machines typically consist of a number of very expensive boards containing lots of ASIC processor devices in a large cabinet.

As design complexity increases, the number of possible input scenarios increases dramatically. A sample design process is shown in Fig. 5. In this process the designer will create a design specification from which the HDL design code is written. After the HDL code has been written, the designer will create some simple tests to verify that the design behavior matches the expected functionality. If the company has a verification team, the design HDL code and specifications are given to the verification team to perform the verification.

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