所用版本Allegro17.4-2019 S039安装在D盘Sigrity21.1.0.01261.263438 000安装在C盘确认无兼容性问题跨盘安装也没有问题。问题现象打开Signal Integrity点击Tools-Topology Editor报错提示缺少某个文件。直接打开SigXplorer能够正常打开且添加相应组件但是实际运行仿真的时候弹出如下错误Failed to run the SI/PI analysis because the SSIViewer executable could not be found. Ensure that Sigrity release 2019, ISR2 (HF2) or later is installed and the SIGRITY_EDA_DIR environment variable is set to the installation directory. The latest Sigrity software can be installed fromhttps://downloads.cadence.com.解决方法先后尝试了修改系统环境变量在path中添加对应sigrity路径管理员模式重启电脑等多种方式均无效果。最终解决问题的方法为通过修改env文件成功启动仿真界面找到env文件添加set sigrity_eda_dir C:/Cadence/Sigrity2021.1这句话让allegro知道sigrity具体的安装目录在哪里修改后的env文件如下source $TELENVset sigrity_eda_dir C:/Cadence/Sigrity2021.1### User Preferences section### This section is computer generated.### Please do not modify to the end of the file.### Place your hand edits above this section.###额外问题SigXplorer中右键点击View CDSDefaultOutput _1p8v没有任何反应查了下好像是17.4的一个bug建议换成17.2不现实该文件为IBIS模型文件不影响仿真运行暂不清楚怎么解决
