sequence块和property块都有name,使用assert调用时都是:“assert property(name);” 在SVA中,sequence块一般用来定义组合逻辑断言,而property一般用来定义一个有时间观念的断言,它会常常调用sequence,一些时序操作如“|->”只能用于property就是这个原因。 注:以下介绍的SVA语法,既可以写在sequence中,也可以写在property...
a1:assumeproperty(@(posedgeclk)reqdist{0:=40,1:=60});//req为0的权重比是40,为1的权重比是60propertyproto;@(posedgeclk)req|->req[*1:$]##0ack;endproperty 这等价于以下内容: a1_assertion:assertproperty(@(posedgeclk)reqinside{0,1});//req可以取0或者1propertyproto_assertion;@(posedgeclk)...
An assertion is a statement that a given property is required to be true, and a directive to verification tools to verify that the property does hold。 1.2断言的好处 获取设计者的目的; 允许协议被定义和验证; 减少投入到市场的时间; 很大程度上简化可重用IP核的验证; 促进功能覆盖率的度量。 1.3 建...
a_cc:assertproperty(@(posedgeclk)not(a&&b)); SystemVerilog断言的目标之一是为断言提供一个通用语义,以便它们可以用于驱动各种设计和验证工具。例如形式化验证工具,使用基于周期的语义来计算电路描述,通常依赖于一个或多个时钟信号来驱动电路的计算。任何时钟边沿之间的计时或事件行为都被提取出来。并发断言包含这个...
Different Assertion Languages • PSL (Property Specification Language) – based on IBM Sugar • Synopsys OVA (Open Vera Assertions) and OVL (Open Vera Library) • Assertions in Specman • 0-In (0–In Assertions) • SystemC Verification (SCV) • SVA (SystemVerilog Assertions) Why ...
— The enhancements to the IEEE SystemVerilog lan- guage in the 2009 standard and in particular to the SystemVerilog Assertions (SVA) allow us to create much more useful and versatile checker libraries. They benet primarily from the following features: checker encapsulation, let declarations, clock...
The same question holds true forSequence2. The answer to this is that both this sequences use something known as 'implied clock' - a clock that is supplied to these sequences when they are instantiated by an element of layers above the sequence layer (property layer, for example). Whicheve...
This chapter presents the two main assertion languages that are covered throughout this book, namely the Property Specification Language (PSL) and SystemVerilog Assertions (SVA). The explanation is made to be somewhat comparative, such that the readers can easily find similarities and differences ...
Modern assertion languages such as property specification language (PSL) and SystemVerilog assertions include many language constructs. By far, the most ec... Y Oddos,K Morin-Allory,D Borrione,... - Acm Great Lakes Symposium on Vlsi 被引量: 16发表: 2009年 Observations for Assertion-based ...
Over the past several years verification of large designs are becoming more and more complex - both in terms of the maintaining the code size and in keeping parity between the specification written in English; design written in HDL (typically Verilog / VHDL) and the verification models written ...