- 第一章 SystemVerilog导论
- 第二章 文本值
- 第三章 数据类型
- 第四章 数组
- 第五章 数据声明
- 第六章 属性
- 第七章 操作符与表达式
- 第八章 过程语句和控制流
- 第九章 进程
- 第十章 任务与函数
- 第十一章 类
- 第十二章 随机约束
- 第十三章 进程间的同步与通信
- 第十四章 调度语义
- 第十五章 时钟控制块
- 第十六章 程序块
- 第十七章 断言
- 第十八章 层次
- 第十九章 接口
- 第二十章 覆盖
- 第二十一章 参数
- 第二十二章 配置库
- 第二十三章 系统任务与系统函数
- 23.1 简介（一般信息）
- 23.2 确立时的typeof函数
- 23.3 typename函数
- 23.4 表达式尺寸系统函数
- 23.5 范围系统函数
- 23.6 Shortreal转换
- 23.7 数组查询系统函数
- 23.8 断言严重性系统任务
- 23.9 断言控制系统任务
- 23.10 断言系统函数
- 23.11 随机数系统函数
- 23.12 程序控制
- 23.13 覆盖系统函数
- 23.14 对Verilog-2001系统任务的增强
- 23.15 $readmemb与$readmemh
- 23.16 $writememb and $writememh
- 23.17 File format considerations for multi-dimensional unpacked arrays
- 23.18 System task arguments for multi-dimensional unpacked arrays
- 第二十四章 VCD数据
- 第二十五章 编译器指令
- 第二十六章 考虑从SystemVerilog中删除的功能
- 第二十七章 直接编程接口（DPI）
- 27.1 概述
- 27.2 Two layers of the DPI
- 27.3 Global name space of imported and exported functions
- 27.4 导入的任务和函数
- 27.5 Calling imported functions
- 27.6 Exported functions
- 27.7 Exported tasks
- 27.8 Disabling DPI tasks and functions
- 第二十八章 SystemVerilog断言API
- 第二十九章 SystemVerilog覆盖API
- 29.1 需求
- 29.2 SystemVerilog real-time coverage access
- 29.3 FSM recognition
- 29.3.1 Specifying the signal that holds the current state
- 29.3.2 Specifying the part-select that holds the current state
- 29.3.3 Specifying the concatenation that holds the current state
- 29.3.4 Specifying the signal that holds the next state
- 29.3.5 Specifying the current and next state signals in the same declaration
- 29.3.6 Specifying the possible states of the FSM
- 29.3.7 Pragmas in one-line comments
- 29.3.8 Example
- 29.4 VPI coverage extensions
- 第三十章 SystemVerilog数据读API
- 30.1 简介（一般信息）
- 30.2 需求
- 30.3 Extensions to VPI enumerations
- 30.4 VPI object type additions
- 30.5 Object model diagrams
- 30.6 Usage extensions to VPI routines
- 30.7 VPI routines added in SystemVerilog
- 30.8 Reading data
- 30.9 Optionally unloading the data
- 30.10 Reading data from multiple databases and/or different read library providers
- 30.11 VPI routines extended in SystemVerilog
- 30.12 VPI routines added in SystemVerilog
- 30.12.1 VPI reader routines
- 第三十一章 SystemVerilog VPI Object Model
- 31.1 简介（一般信息）
- 31.2 Instance
- 31.3 Interface
- 31.4 Program
- 31.5 Module (supersedes IEEE 1364-2001 26.6.1)
- 31.6 Modport
- 31.7 Interface tf decl
- 31.8 Ports (supersedes IEEE 1364-2001 26.6.5)
- 31.9 Ref Obj
- 31.9.1 Examples
- 31.10 Variables (supersedes IEEE 1364-2001 section 26.6.8)
- 31.11 Var Select (supersedes IEEE 1364-2001 26.6.8)
- 31.12 Typespec
- 31.13 Variable Drivers and Loads (supersedes IEEE 1364-2001 26.6.23)
- 31.14 Instance Arrays (supersedes IEEE 1364-2001 26.6.2)
- 31.15 Scope (supersedes IEEE 1364-2001 26.6.3)
- 31.16 IO Declaration (supersedes IEEE 1364-2001 26.6.4)
- 31.17 Clocking Block
- 31.18 Class Object Definition
- 31.19 Constraint, constraint ordering, distribution,
- 31.20 Constraint expression
- 31.21 Class Variables
- 31.22 Structure/Union
- 31.23 Named Events (supersedes IEEE 1364-2001 26.6.11)
- 31.24 Task, Function Declaration (supersedes IEEE 1364-2001 26.6.18)
- 31.25 Alias Statement
- 31.25.1 Examples
- 31.26 Frames (supersedes IEEE 1364-2001 26.6.20)
- 31.27 Threads
- 31.28 tf call (supersedes IEEE 1364-2001 26.6.19)
- 31.29 Module path, path term (supersedes IEEE 1364-2001 26.6.15)
- 31.30 Concurrent assertions
- 31.31 Property Decl
- 31.32 Property Specification
- 31.33 Multiclock Sequence Expression
- 31.34 Sequence Declaration
- 31.35 Sequence Expression
- 31.36 Attribute (supersedes IEEE 1364-2001 26.6.42)
- 31.37 Atomic Statement (supersedes IEEE 1364-2001 26.6.27)
- 31.38 If, if else, return, case, do while (supersedes IEEE 1364-2001 26.6.35, 26.6.36)
- 31.39 waits, disables, expect, foreach (supersedes IEEE 1364 26.6.38)
- 31.40 Simple expressions (supersedes IEEE 1364-2001 26.6.25)
- 31.41 Expressions (supersedes IEEE 1364-2001 26.6.26)
- 31.42 Event control (supersedes IEEE 1364-2001 26.6.30)
- 31.43 Event stmt (supersedes IEEE 1364-2001 26.6.27)
- 31.44 Process (supersedes IEEE 1364-2001 26.6.27)
- 31.45 Assignment (supersedes IEEE 1364-2001 26.6.28)
- 附录A 形式语法
- A.1 源文本
- A.2 声明
- A.3 Primitive instances
- A.4 Module, interface and generated instantiation
- A.5 UDP declaration and instantiation
- A.6 Behavioral statements
- A.6.1 Continuous assignment and net alias statements
- A.6.2 Procedural blocks and assignments
- A.6.3 Parallel and sequential blocks
- A.6.4 Statements
- A.6.5 Timing control statements
- A.6.6 Conditional statements
- A.6.7 Case statements
- A.6.8 Looping statements
- A.6.9 Subroutine call statements
- A.6.10 Assertion statements
- A.6.11 Clocking block
- A.6.12 Randsequence
- A.7 Specify section
- A.8 Expressions
- A.9 General
- A.10 Footnotes (normative)
- 附录B 关键字
- 附录C 标准包
- 附录D 链表
- 附录E DPI C-layer
- E.1 概述
- E.2 Naming conventions
- E.3 Portability
- E.4 Include files
- E.5 Semantic constraints
- E.6 Data types
- E.7 Argument passing modes
- E.8 Context tasks and functions
- E.9 Include files
- E.10 Arrays
- E.11 Open arrays
- E.11.1 Actual ranges
- E.11.2 Array querying functions
- E.11.3 Access functions
- E.11.4 Access to the actual representation
- E.11.5 Access to elements via canonical representation
- E.11.6 Access to scalar elements (bit and logic)
- E.11.7 Access to array elements of other types
- E.11.8 Example 4— two-dimensional open array
- E.11.9 Example 5 — open array
- E.11.10 Example 6 — access to packed arrays
- E.11.11 Example 7 — binary compatible calls of exported functions
- 附录F 包含文件
- 附录G 包含外部语言代码
- 附录H 并发断言的形式语义
- 附录I svvpiuser.h
- 附录J 术语表
- 附录K 参考书目
- 其他
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23.9 断言控制系统任务
assert_control_task ::= // not in Annex A
assert_task[(levels[, list_of_modules_or_assertions])];
assert_task ::=
$asserton
| $assertoff
| $assertkill
list_of_modules_or_assertions ::=
module_or_assertion{, module_or_assertion}
module_or_assertion ::=
module_identifier
| assertion_identifier
| hierarchical_identifierSyntax 23-7—Assertion control syntax (not in Annex A)
SystemVerilog provides three system tasks to control assertions.
- $assertoff shall stop the checking of all specified assertions until a subsequent $asserton. An assertion that is already executing, including execution of the pass or fail statement, is not affected
- $assertkill shall abort execution of any currently executing specified assertions and then stop the checking of all specified assertions until a subsequent $asserton.
- $asserton shall re-enable the execution of all specified assertions
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