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In computing, a linear-feedback shift register (LFSR) is a shift register whose input bit is a linear function of its previous state. The most commonly used linear function of single bits is exclusive-or (XOR). Thus, an LFSR is most often a shift register whose input bit is driven by the XOR of some bits of the overall shift register value.
The straight ring counter has the logical structure shown here: Instead of the reset line setting up the initial one-hot pattern, the straight ring is sometimes made self-initializing by the use of a distributed feedback gate across all of the outputs except that last, so that a 1 is presented at the input when there is no 1 in any stage but the last.
Main features of e are: Random and constrained random stimulus generation. Functional coverage metric definition and collection. Temporal language that can be used for writing assertions. Aspect-oriented programming language with reflection capability. Language is DUT-neutral in that you can use a single e testbench to verify a SystemC/C++ ...
Verilog-2001 is a significant upgrade from Verilog-95. First, it adds explicit support for (2's complement) signed nets and variables. Previously, code authors had to perform signed operations using awkward bit-level manipulations (for example, the carry-out bit of a simple 8-bit addition required an explicit description of the Boolean algebra ...
In computer engineering, a hardware description language (HDL) is a specialized computer language used to describe the structure and behavior of electronic circuits, usually to design application-specific integrated circuits (ASICs) and to program field-programmable gate arrays (FPGAs). A hardware description language enables a precise, formal ...
Functional verification. Functional verification is the task of verifying that the logic design conforms to specification. [1] Functional verification attempts to answer the question "Does this proposed design do what is intended?" [2] This is complex and takes the majority of time and effort (up to 70% of design and development time) [1] in ...
3 2 ≡ 9 ≡ 3 (mod 6) 4 2 ≡ 16 ≡ 4 (mod 6) 5 2 ≡ 25 ≡ 1 (mod 6) From these computations, 0, 1, 3, and 4 are idempotents of this ring, while 2 and 5 are not. This also demonstrates the decomposition properties described below: because 3 + 4 ≡ 1 (mod 6), there is a ring decomposition 3Z / 6Z ⊕ 4Z / 6Z. In 3Z / 6Z the multiplicative ...
Intelligent Verification, including intelligent testbench automation, is a form of functional verification of electronic hardware designs used to verify that a design conforms to specification before device fabrication. Intelligent verification uses information derived from the design and specification (s) to expose bugs in and between hardware ...