Allegro16.5中进行SI仿真

在仿真之前，需要相应的IBIS 模型文件，并把它转换为Cadence 需要的DML 文件，现在已经下载了一个IBIS文件，它是Altera 公司的cyclone3 的IBIS 文件：cyclone3.ibs。为了把它转化，我们首先需要打开 Model Integrity 打开 Model Integrity 后， 选择File Open 打开需要转化的IBIS 文件 打开后如下图： 点击 cyclon3，然后点右键，选择 IBIS to DML，来实现 IBIS 到 DML 的转化 在转化时报错： 查看LOG File 有如下说明： 这个时候实际上是出了很多报错，报错的说明如下： WARNING: CYCLONE3_sstl18c1_cio_d10s Ramp value for maximum of Fall is significantly different with that computed from the corresponding TV curve - fixed ERROR: TVCurve start time of CYCLONE3_ttl18_rdio_d8s RisingWaveform rise_1 at line 483255 is not same as CYCLONE3_ttl18_rdio_d8s FallingWaveform fall_1 at line 482667 ERROR: TVCurve start time of CYCLONE3_ttl18_rdio_d8s RisingWaveform rise_2 at line 483368 is not same as CYCLONE3_ttl18_rdio_d8s FallingWaveform fall_2 at line 482778 WARNING: CYCLONE3_sstl2c1_cio_d12s Ramp value for typical of Fall is significantly different with that computed from the corresponding TV curve - fixed WARNING: CYCLONE3_sstl2c1_rio_d12s Ramp value for typical of Fall is significantly different with that computed from the corresponding TV curve - fixed WARNING: CYCLONE3_ttl18_rdio_d10s Ramp value for maximum of Rise is significantly different with that computed from the corresponding TV curve - fixed Translation failed due to DMLCHECK errors. Output saved as D:\yanshi\2\cyclone3.dml.txt. Run ibis2signoise -d, a DML will be generated. Examine it with line numbers from the log message. 对于这个错误，说明是在 DOS 环境下运行 ibis2signoise -d,可以了，那么就在 DOS 下运行 运行结束后，在运行目录下可以看到已经生成了文件：cyclone3.ibs.dml，修改它为cyclone3.dml DML 文件已经生成，关闭Model Integrity 下一步就是要进行仿真了， ...