For analog designers, PSpice would often fail to converge on transient analysis with complex MOSFET models. The hotfixes updated the underlying numerical solver (the "PspiceEng.dll") to handle higher node counts without freezing.
"I used OrCAD 16.5 with hotfix 050 for 3 years in a production environment. After the initial pain of getting it installed correctly, it was reasonably stable — about 1 crash per week on complex 8-layer boards. The hotfixes fixed the showstopper bugs but never made it 'great'. Upgrading to 16.6 (which had a much better hotfix system) was a relief." — Senior PCB Engineer, Automotive Supplier, 2014 OrCAD 16.5 Hotfix SPB 16.5 Updates
Optimizing the performance of OrCAD Capture and Allegro PCB Editor on large, complex boards. For analog designers, PSpice would often fail to
Improved how netgroups are managed and netlisted. After the initial pain of getting it installed
| Hotfix Version | Release Focus | Key Fixes | | :--- | :--- | :--- | | | June 2011 | Initial release. | | HF024 | Dec 2011 | Database stability, Capture TCL commands. | | HF030 | April 2012 | PSpice performance, Advanced Analysis fixes. | | HF036 | Sept 2012 | Gerber 274X output, Polygon pour speed. | | HF039 | Dec 2012 | Critical – Windows 8 compatibility (initial). | | HF042 | March 2013 | Final release. Last update before End-of-Life. |
The SPB 16.5 suite introduced or refined several features to streamline the design workflow: Constraint Manager
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