Method and apparatus for implementing engineering change orders

Details Method and apparatus for implementing engineering change orders Method and apparatus for implementing engineering change orders

1995-10-31

1999-09-14

Teska, Kevin J.

Boots, shoes, and leggings

364490, 364489, 364488, G06F 1700, G06F 1750

Patent

active

059532360

ABSTRACT:
A method for laying out an integrated circuit design based upon a netlist provided by a behavioral synthesis tool includes the steps of: (a) placing cells specified by the netlist in a layout area in a placement step, the cells including pins that are interconnected by nets; (b) verifying timing constraints in a timing verification step of the placed cells in the layout area; and (c) if the timing verification step indicates that timing does not verify in that the timing constraints are not met: (i) modifying the netlist pursuant to an engineering change order (ECO); and (ii) making an ECO placement of at least one cell into the layout area based upon the timing constraints while adjusting any affected nets as specified by the netlist. A layout tool implements the method on a computer system to form a portion of and integrated circuit fabrication system.

REFERENCES:
patent: 4964057 (1990-10-01), Yabe
patent: 5111413 (1992-05-01), Lazansky et al.
patent: 5164907 (1992-11-01), Yabe
patent: 5237514 (1993-08-01), Curtin
patent: 5396435 (1995-03-01), Ginetti
patent: 5461576 (1995-10-01), Tsay et al.
patent: 5550748 (1996-08-01), Xiong
patent: 5557533 (1996-09-01), Koford et al.
patent: 5587923 (1996-12-01), Wang
patent: 5638291 (1997-06-01), Li et al.
patent: 5666290 (1997-09-01), Li et al.
1.132 Affidavit and Software Release Notes, Physical Design Tools V8R4.6.5 Beta, Nov. 14, 1994, Compass Design Automation, San Jose, CA.
Software Release Notes, Physical Design Tools V8R4.6.5 Beta, Nov. 14, 1994, Compass Design Automation, San Jose, CA.

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