EXHIBIT 99
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LATTICE SEMICONDUCTOR COMPLETES ACQUISITION OF VANTIS CORPORATION

HILLSBORO, ORE. - JUNE 15, 1999 - Lattice Semiconductor Corporation (NASDAQ:
LSCC) today announced that it has completed its previously announced
acquisition of Vantis Corporation from Advanced Micro Devices (NYSE: AMD) for
$500 million in cash. The acquisition strongly positions Lattice to deliver
innovative, higher density programmable solutions and further strengthens its
leadership position in the PLD marketplace. The acquisition will be accounted
for as a purchase. In future quarterly financial statements Lattice will
report, on a supplemental basis, earnings before goodwill ("EBG") to allow
investors to analyze the Company's cash earnings. Following the acquisition,
the combined company will be one of the world's leading providers of high
density programmable devices. Lattice will have a significant presence in the
majority of leading telecom and datacom customers and an unparalleled breadth
of PLD product offerings versus the competition. Based on proforma financial
results for calendar 1998, the combined revenues of the two companies would
have been approximately $400 million.

"Customers, employees and shareholders will benefit from this highly
strategic move by Lattice," stated Cyrus Y. Tsui, president and chief
executive officer. "The expanded product line, increased R&D resources and
extended market reach of the combined company will greatly enhance our
ability to compete in the market and meet the rapidly changing needs of our
customers."

"We are excited to be joining the Lattice team," said Frank Barone, chief
operating officer of Vantis. "We believe that the combined strength of our
two organizations will greatly expand our presence in the attractive PLD
market."

The foregoing paragraphs contain forward-looking statements within the
meaning of the Federal Securities laws including statements about future
quarterly financial statements, the combined company, customers, product
offerings, revenues and ability to compete. Investors are cautioned that
actual events and results could differ materially from these forward-looking
statements as a result of a number of factors, including Lattice's ability to
integrate Vantis into its operations, to retain key management of Vantis, to
retain key customers and suppliers of Vantis and Lattice, and to increase
sales under the Lattice trademark as well as the effect of overall
semiconductor market conditions.

Oregon-based Lattice Semiconductor Corporation designs, develops and markets
the broadest range of high-performance ISP(tm) programmable logic devices
(PLDs). Lattice introduced ISP devices to the industry in 1992. In June 1999,
Lattice acquired Vantis, the company that invented the PLD. With double the
engineering and sales resources, the combined company will focus on
developing and delivering innovative programmable products to a complementary
customer base.




Lattice/Vantis products are sold worldwide through an extensive network of
independent sales representatives and distributors, primarily to OEM
customers in the communication, computing, industrial and military end
markets. Company headquarters are located at 5555 N.E. Moore Court,
Hillsboro, Oregon 97124 U.S.A.; Telephone (503) 268-8000; FAX (503) 268-8037.
For more information access our web sites at WWW.LATTICESEMI.COM and
WWW.VANTIS.COM.

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ISP and in-system programmable are trademarks of Lattice Semiconductor
Corporation.

Press Contact:                      Investor Contact:
Steve Skaggs                        Rodney Sloss
Senior Vice President               Vice President, Finance
Chief Financial Officer             (503) 268-8000
(503) 268-8000