Exhibit 99.1
                                                                    ============


                    SMSC ACQUIRES OASIS SILICONSYSTEMS

      Adds Blue-Chip Automotive Customer Base for Infotainment Networking
                   Applications & Broadens European Presence


Hauppauge,  NY - March  30,  2005 -  Reaching  a  significant  milestone  in its
diversification  strategy,  SMSC (Nasdaq: SMSC), a leading semiconductor company
delivering innovative system solutions spanning analog, digital and mixed-signal
technologies, today announced the acquisition of OASIS SiliconSystems Holding AG
(OASIS),  a leader in the development and marketing of integrated  circuits that
enable   networking   of   multimedia   devices  for   automotive   infotainment
applications.  OASIS is a leading provider of Media Oriented  Systems  Transport
(MOST(R))  technology,  which enables the seamless  transport of digital  audio,
video,  and  packet-based   data,   along  with  control   information,   within
automobiles.

Headquartered in Karlsruhe,  Germany, and supported by an IC engineering team in
Austin,  Texas, OASIS is one of the largest privately held fabless semiconductor
companies in Europe and  currently  serves a top tier  customer  base of leading
automakers and automotive suppliers.  OASIS's infotainment networking technology
has been  widely  adopted  by many  European  luxury to  mid-sized  car  brands,
including Audi, BMW, Fiat, Jaguar, Land Rover, Mercedes-Benz, Porsche, PSA, Saab
and Volvo.

This   acquisition   allows  SMSC  to  achieve  a  greater   balance  among  its
application-focused  businesses.  The  service  model  employed  by  OASIS  with
automotive  customers  dovetails with SMSC's expertise in servicing markets that
require  optimized  solutions for networking  information.  This natural fit not
only enhances growth  opportunities  with automotive  infotainment  customers in
Europe and Asia, but also brings strong systems  design  capabilities  that SMSC
can leverage in the consumer electronics and industrial markets.

Net of cash acquired in the  transaction,  SMSC acquired  OASIS for $94 million,
with 62% of the  consideration  paid in cash and the  balance  in shares of SMSC
common stock. The transaction closed on March 30, 2005.  Additional  payments of
cash and SMSC  common  stock  aggregating  up to $20 million may occur in fiscal
2007 upon achievement of certain  performance  goals.  Also, as an inducement to
entering  into  employment,  stock  option  grants  covering an aggregate of 1.1
million  shares,  all having  exercise  prices of the closing price per share on
March 30, 2005, and approximately  75,000 shares of restricted stock were issued
to 149 individuals at OASIS who will be employed in positions ranging from Clerk
to Vice President.

In calendar  2004,  OASIS's  revenues  were $50  million and it was  profitable.
Double-digit  growth in revenues and earnings are expected in calendar  2005 for
OASIS. Before  amortization of acquired  intangibles and in-process R&D charges,
the  transaction  is  expected  to be  neutral to SMSC's  earnings  in the first
quarter of fiscal  2006 and  slightly  accretive  for the balance of that fiscal
year.

"The  acquisition  of OASIS marks another  major step in SMSC's  diversification
strategy by moving  into a new  vertical  market  with the leader in  automotive
infotainment networking in Europe," said Steven J. Bilodeau, Chairman, President
and Chief Executive  Officer of SMSC. "This  acquisition  enables the Company to
strengthen its business with broader product lines,  accelerates overall revenue
growth and  provides  for  greater  leverage to SG&A.  Furthermore,  it provides
geographic  diversity and increases brand visibility by establishing  SMSC as an
important  semiconductor  provider in Europe. With a now well balanced business,
we are able to leverage our technology  solutions across automotive,  computing,
consumer  electronics  and  industrial  markets,  which  will  further  increase
long-term returns to shareholders."

"SMSC's strong business  infrastructure will provide access to greater resources
and an outstanding supply chain for OASIS's existing customer base,  enabling us
to provide  them an even higher  level of service  and  support,"  said  Herbert
Hetzel,  Chief  Executive  Officer of OASIS.  "Through the  combination of these
resources and our systems  expertise in  infotainment  networking,  we will also
open the door to new  opportunities  with prospective  customers as infotainment
applications are increasingly  integrated into the automotive platform.  We look
forward to contributing  to SMSC's  successful  business  expansion and becoming
part of an even larger leading semiconductor organization."

OASIS is the  exclusive  supplier to nearly every major  European  automaker for
MOST-based  semiconductor solutions for vehicle infotainment systems. It is also
a  founding  member  of the  MOST  Cooperation,  a  cooperative  of  automakers,
automotive  systems  architects and manufacturers  and key components  suppliers
working to establish and refine a common standard for the evolving  requirements
of automotive multimedia networking.  SMSC will actively support the advancement
of MOST as a standard for networking and  connectivity in the global  automotive
and consumer electronics industries.

A conference call to discuss SMSC's acquisition of OASIS  SiliconSystems will be
held  tomorrow,  March 31 at 9:00 AM Eastern  Standard  Time, or 4:00 PM Central
European Summer Time. Access information for the live call is as follows:  (800)
810-0924;  Passcode: 6103764. A replay will also be available on SMSC's website,
www.smsc.com, following the live event.

About SMSC:
Many of the world's most successful global  technology  companies rely upon SMSC
as a go-to resource for semiconductor system solutions that span analog, digital
and mixed-signal  technologies.  Leveraging  substantial  intellectual property,
integration  expertise and a comprehensive  global  infrastructure,  SMSC solves
design  challenges  and delivers  performance,  space,  cost and  time-to-market
advantages  to its  customers.  SMSC's  application  focus  targets  high-growth
vertical   markets   including  mobile  and  desktop  PCs,   servers,   consumer
electronics,  automotive infotainment and industrial  applications.  The Company
has  developed   leadership   positions  in  its  select  markets  by  providing
application  specific  solutions  such as  mixed-signal  PC system  controllers,
non-PCI   Ethernet,   ARCNET,   MOST,   USB2.0  and  other   high-speed   serial
communications.

SMSC is based in Hauppauge,  New York with operations in North America,  Taiwan,
Japan,  Korea,  China and  Europe.  Engineering  design  centers  are located in
Arizona,  New York,  Texas and  Karlsruhe,  Germany.  Additional  information is
available at www.smsc.com.

Forward Looking Statements:

Except for historical  information  contained  herein,  the matters discussed in
this  announcement are  forward-looking  statements about expected future events
and financial and operating results that involve risks and uncertainties.  These
include the timely development and market acceptance of new products; the impact
of competitive  products and pricing; the effect of changing economic conditions
in domestic  and  international  markets;  changes in customer  order  patterns,
including loss of key customers or distributors,  order cancellations or reduced
bookings;   and  excess  or  obsolete  inventory  and  variations  in  inventory
valuation,  among others. Such statements are qualified in their entirety by the
inherent risks and  uncertainties  surrounding  future  expectations and may not
reflect  the   potential   impact  of  any  future   acquisitions,   mergers  or
divestitures.

SMSC  competes  in the  semiconductor  industry,  which  has  historically  been
characterized  by intense  competition,  rapid  technological  change,  cyclical
market patterns,  price erosion and periods of mismatched  supply and demand. In
addition,  sales of many of the Company's  products  depend  largely on sales of
personal  computers  and  peripheral  devices,  as well as general  industry and
market  conditions.  Reductions  in the  rate  of  growth  of the  PC,  consumer
electronics, embedded or automotive markets could adversely affect its operating
results.  SMSC  conducts  business  outside the United  States and is subject to
tariff and  import  regulations  and  currency  fluctuations,  which may have an
effect on its business. All forward-looking statements speak only as of the date
hereof and are based upon the  information  available to SMSC at this time. Such
information is subject to change, and the Company may not necessarily inform, or
be  required to inform,  investors  of such  changes.  These and other risks and
uncertainties,  including  potential  liability resulting from pending or future
litigation,  are detailed from time to time in the Company's  reports filed with
the SEC.  Investors are advised to read the Company's Annual Report on Form 10-K
and  quarterly  reports  on Form 10-Q  filed with the  Securities  and  Exchange
Commission,  particularly those sections entitled "Other Factors That May Affect
Future  Operating  Results" for a more  complete  discussion  of these and other
risks and uncertainties.

SMSC is a registered  trademark of Standard  Microsystems  Corporation.  Product
names and company names are trademarks of their respective holders.

Contact:
Carolynne Borders
Director of Corporate Communications
SMSC
Voice: 631-435-6626
Fax: 631-273-5550
carolynne.borders@smsc.com