<PAGE>
EXHIBIT 23.1
CONSENT OF INDEPENDENT AUDITORS
The Board of Directors
Avant! Corporation
We consent to incorporation herein by reference of our report dated January 24,
2000, relating to the consolidated balance sheets of Avant! Corporation and
subsidiaries as of December 31, 1999 and 1998, and the related consolidated
statements of income, shareholders' equity, and cash flows for each of the years
in the three-year period ended December 31, 1999, and the related consolidated
financial statement schedule, which reports appear in the December 31, 1999
Annual Report on Form 10-K of Avant! Corporation.
/s/ KPMG LLP
-------------------------
September 19, 2000
Mountain View, California
