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1、EDA 技术习题5 习题5-1 归纳利用Quartus II 进展VHDL 文本输入设计的流程：从文件输入始终到 SignalTap II测试。P95P115答：1 建立工作库文件夹和编辑设计文件；2 创立工程；3 编译前设置；4 全程编译；5 时序仿真；6 引脚锁定；7 配置文件下载；8 翻开SignalTap II 编辑窗口；9 调入 SignalTap II 的待测信号；10 SignalTap II 参数设置；11 SignalTap II 参数设置文件存盘；12 带有SignalTap II 测试信息的编译下载；13 启动SignalTap II 进展采样与分析；14 SignalT
2、ap II 的其他设置和把握方法。5-2 由图 5-40 和图 5-41，具体说明工程设计CNT10 的硬件工作状况。P114P115答：图 5-40 给出工程设计 CNT10 的十进制计数工作状况；当计数CQ 或 CQI 到 9 时, 计数进位 COUT 输出正脉冲。图 5-41 给出工程设计 CNT10 的十进制计数和内部计数节点CQI 计数线性递增的信号波形的工作状况。5-3 如何为设计中的 SignalTap II 参与独立采样时钟?试给出完整的程序和对它的实测结果。P115答：为 SignalTap II 供给独立时钟的方法是在顶层文件的实体中增加一个时钟输入端口， 如语句 :LOG
3、C_CLK:IN STD_LOGIC;在此实体中不必对其功能和连接具体定义，而在SignalTap II 的参数设置中则可以选择LOGC_CLK 为采样时钟。5-4 参考QuartusII 的 Help，具体说明Assignments 菜单中Settings 对话框的功能。(1)说明其中的Timing Requirements&Qptions 的功能、他用方法和检测途经。Specifying Timing Requirements and Options (Classic Timing Analyzer)You can specify timing requirements for Class
4、ic timing analysis that help you achieve the desired speed performance and other timing characteristics for the entire project, for specific design entities, or for individual clocks, nodes, and pins.When you specify either project-wide or individual timing requirements, the Fitter optimizes the pla
5、cement of logic in the device in order to meet your timing goals.You can use theTiming wizard or the Timing Analysis Settings command to easily specify all project-wide timing requirements, or you can use the Assignment Editor to assign individual clock or I/O timing requirements to specific entitie
6、s, nodes, and pins, or to all valid nodes included in a wildcard or assignment group assignment.To specify project-wide timing requirements:1. On the Assignments menu, click Settings.2. In the Category list, select Timing Analysis Settings.3. To specify project-wide tSU, tH, tCO, and/or tPD timing r
7、equirements, specify values under Delay requirements.4. To specify project-wide minimum delay requirements, specify options underMinimum delay requirements.5. Under Clock Settings, select Default required fmax.6. In the Default required fmax box, type the value of the required fMAXand select a time
8、unit from the list.7. If you want to specify options for cutting or reporting certain types of timing paths globally, enabling recovery/removal analysis, enabling clock latency, and reporting unconstrained timing paths, follow these steps:8. Click OK.To specify clock settings:1. On the Assignments m
9、enu, click Settings.2. In the Category list, select Timing Analysis Settings.3. Under Clock Settings, click Individual Clocks.4. Click New.5. In the New Clock Settings dialog box, type a name for the new clock settings in theClock settings name box.6. To assign the clock settings to a clock signal i
10、n the design, type a clock node name in the Applies to node box, or click Browse. to select a node name using the Node Finder.7. If you want to specify timing requirements for an absolute clock, follow these steps:8. If you have already specified timing requirements for an absolute clock, and you wa
11、nt to specify timing requirements for a derived clock, follow these steps:9. In the New Clock Settings dialog box, click OK.10. In the Individual Clocks dialog box, click OK.11. In the Settings dialog box, click OK. To specify individual timing requirements:1. On the Assignments menu, click Assignme
12、nt Editor.2. In the Category bar, select Timing to indicate the category of assignment you wish to make.3. In the spreadsheet, select the To cell and perform one of the following steps: Type a node name and/or wildcard that identifies the destination node(s) you want to assign. Double-click the To c
13、ell and click Node Finder to use the Node Finder to enter a node name. Double-click the To cell, click the arrow that appears on the right side of the cell, and click Select Assignment Group to enter an existing assignment group name.4. To specify an assignment source, repeat step 3 to specify the s
14、ource name in theFrom cell.5. In the spreadsheet, double-click the Assignment Name cell and select the timing assignment you wish to make.6. For assignments that require a value, double-click the Value cell and type or select the appropriate assignment value.To specify timing analysis reporting rest
15、rictions:1. On the Assignments menu, click Settings.2. In the Category list, double-click Timing Analysis Settings.3. Click Timing Analyzer Reporting.4. To specify the range of timing analysis information reported, specify one or more options in the Timing Analyzer Reporting .5. Click OK.(2) 说明其中的Co
16、mpilation Process 的功能和使用方法。Compilation Process Settings (Settings Dialog Box)Allows you to direct the Compiler to use smart compilation, save synthesis results for the current design”s top-level entity, disable theOpenCore Plus hardware evaluation feature, or export version-compatible database files. You can also control the amount o
