1. Behavioral model overview Verilog包含控制仿真和操作数据变量的过程性语句:initial 和 always 。 模型事务活动始于initial 和 always。两者都可以独立启动活动流。 所有活动流是并行执行的,用来模拟硬件固有的并发性。 initial结构执行一次,always结构会重复执行。 两者,内部顺序执行,相互并行执行。 2. Procedural ass...
Behavioral Models : Higher level of modeling where behavior of logic is modeled. RTL Models : Logic is modeled at register level Structural Models : Logic is modeled at both register level and gate level. Procedural Blocks Verilog behavioral code is inside procedure blocks, but there is an exc...
They are used for modeling Tri-State buffers. They can be used for modeling combinational logic. They are outside the procedural blocks (always and initial blocks). The continuous assign overrides any procedural assignments. The left-hand side of a continuous assignment must be net data type. ...
.cause the statements to be evaluated sequentially(one at a time) *any timing within the sequential groups is relative to the previous statement *delays in the sequential accumulate(each delay is added to the previous delay) *block finishes afterthe last statementin the block Example - sequential...
verilog behavioral modeling--branch statement conditional statement case statement 1. conditional statement if(expression) statement_or_null[else statement_or_null] | if_else_if_statement If the expression evaluates to true(that is ,has a nonzero know value),the first statement shall be executed....
Behavioral Modeling using Verilog-A Verilog-ASaxena
Verilog for behavioral modeling - Tzartzanis N.搜索 EE577b Verilog for Behavioral ModelingFebruary 3, 1998 1 Nestoras TzartzanisVerilog for Behavioral ModelingNestoras TzartzanisE-mail: nestoras@isi.eduDept. of Electrical Engineering-SystemsUniversity of Southern California 阅读...
To really do modeling well, it will take some time to master. However, to learn the basics and to reuse and adapt previously written models is not difficult. The Verilog-A language constructs are basically simple to follow by example. A designer can extend a set of design aids tremendously...
Example 8-1 is a complete Verilog behavioral model. Example 8-1: Example of a behavioral model During simulation of this model, all of the flows defined by the initial and always statements start together at simulation time zero. The
hierarchical design, it is possible to create models at any level of the hierarchy. Generally, the higher the level of modeling, the faster the simulation runs. In addition, it is also possible to represent digital functional and behavioral models in Verilog- ...