Introduction to VLSI Systems
The “PI” (placement and interconnect) system
DAC '82 Proceedings of the 19th Design Automation Conference
A design methodology based upon symbolic layout and integrated cad tools
DAC '82 Proceedings of the 19th Design Automation Conference
On routing for custom integrated circuits
DAC '82 Proceedings of the 19th Design Automation Conference
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CAF (Computer-Assisted VLSI Floorplan) is an interactive program that helps a VLSI designer to get a good floorplan before he starts the actual routing. It includes a graphic output, block end pad geometric manipulation commands, a cost function which is an estimation of total wire length, an automatic pad placement, and traffic analysis. The heuristics used to compute estimated wire lengths and channel congestions are presented and will be shown to be quite accurate. The general use of CAF as a floorplan-building tool is discussed.