EXHIBIT 24.2

                                POWER OF ATTORNEY
   (2001 Nonqualified Stock Option Plan and 1996 Employee Stock Purchase Plan)

         The undersigned, an officer and/or director of RadiSys Corporation,
does hereby constitute and appoint Julia A. Harper and Ronald A. Dilbeck, and
each of them, his true and lawful attorneys-in-fact and agents to do any and all
acts and things and to execute in his name (whether on behalf of RadiSys
Corporation or as an officer or director of said company, or otherwise) any and
all instruments which said attorneys-in-fact and agents may deem necessary or
advisable in order to enable RadiSys Corporation to comply with the Securities
Act of 1933, as amended, and any requirements of the Securities and Exchange
Commission in respect thereof, in connection with the registration under the
Securities Act of 1933, as amended, of shares of Common Stock of RadiSys
Corporation issuable pursuant to its 2001 Nonqualified Stock Option Plan and
1996 Employee Stock Purchase Plan, as amended, including specifically, but
without limitation thereto, power and authority to sign his name (whether on
behalf of RadiSys Corporation or as an officer or director of said company, or
otherwise) to a Registration Statement on Form S-8 and any amendment thereto
(including any post-effective amendment) or application for amendment thereto in
respect to such Common Stock or any exhibits filed therewith; and to file the
same with the Securities and Exchange Commission; and the undersigned does
hereby ratify and confirm all that said attorneys-in-fact and agents may do or
cause to be done by virtue hereof.

DATED: July 16, 2002

                                            /s/CARL W. NEUN
                                            ------------------------------------
                                            Carl W. Neun

                                POWER OF ATTORNEY
   (2001 Nonqualified Stock Option Plan and 1996 Employee Stock Purchase Plan)

         The undersigned, an officer and/or director of RadiSys Corporation,
does hereby constitute and appoint Julia A. Harper and Ronald A. Dilbeck, and
each of them, his true and lawful attorneys-in-fact and agents to do any and all
acts and things and to execute in his name (whether on behalf of RadiSys
Corporation or as an officer or director of said company, or otherwise) any and
all instruments which said attorneys-in-fact and agents may deem necessary or
advisable in order to enable RadiSys Corporation to comply with the Securities
Act of 1933, as amended, and any requirements of the Securities and Exchange
Commission in respect thereof, in connection with the registration under the
Securities Act of 1933, as amended, of shares of Common Stock of RadiSys
Corporation issuable pursuant to its 2001 Nonqualified Stock Option Plan and
1996 Employee Stock Purchase Plan, as amended, including specifically, but
without limitation thereto, power and authority to sign his name (whether on
behalf of RadiSys Corporation or as an officer or director of said company, or
otherwise) to a Registration Statement on Form S-8 and any amendment thereto
(including any post-effective amendment) or application for amendment thereto in
respect to such Common Stock or any exhibits filed therewith; and to file the
same with the Securities and Exchange Commission; and the undersigned does
hereby ratify and confirm all that said attorneys-in-fact and agents may do or
cause to be done by virtue hereof.

DATED: July 16, 2002

                                            /s/JAMES F. DALTON
                                            ------------------------------------
                                            James F. Dalton


                                POWER OF ATTORNEY
   (2001 Nonqualified Stock Option Plan and 1996 Employee Stock Purchase Plan)

         The undersigned, an officer and/or director of RadiSys Corporation,
does hereby constitute and appoint Julia A. Harper and Ronald A. Dilbeck, and
each of them, his true and lawful attorneys-in-fact and agents to do any and all
acts and things and to execute in his name (whether on behalf of RadiSys
Corporation or as an officer or director of said company, or otherwise) any and
all instruments which said attorneys-in-fact and agents may deem necessary or
advisable in order to enable RadiSys Corporation to comply with the Securities
Act of 1933, as amended, and any requirements of the Securities and Exchange
Commission in respect thereof, in connection with the registration under the
Securities Act of 1933, as amended, of shares of Common Stock of RadiSys
Corporation issuable pursuant to its 2001 Nonqualified Stock Option Plan and
1996 Employee Stock Purchase Plan, as amended, including specifically, but
without limitation thereto, power and authority to sign his name (whether on
behalf of RadiSys Corporation or as an officer or director of said company, or
otherwise) to a Registration Statement on Form S-8 and any amendment thereto
(including any post-effective amendment) or application for amendment thereto in
respect to such Common Stock or any exhibits filed therewith; and to file the
same with the Securities and Exchange Commission; and the undersigned does
hereby ratify and confirm all that said attorneys-in-fact and agents may do or
cause to be done by virtue hereof.

DATED: July 16, 2002

                                            /s/RICHARD J. FAUBERT
                                            ------------------------------------
                                            Richard J. Faubert

                                POWER OF ATTORNEY
   (2001 Nonqualified Stock Option Plan and 1996 Employee Stock Purchase Plan)

         The undersigned, an officer and/or director of RadiSys Corporation,
does hereby constitute and appoint Julia A. Harper and Ronald A. Dilbeck, and
each of them, his true and lawful attorneys-in-fact and agents to do any and all
acts and things and to execute in his name (whether on behalf of RadiSys
Corporation or as an officer or director of said company, or otherwise) any and
all instruments which said attorneys-in-fact and agents may deem necessary or
advisable in order to enable RadiSys Corporation to comply with the Securities
Act of 1933, as amended, and any requirements of the Securities and Exchange
Commission in respect thereof, in connection with the registration under the
Securities Act of 1933, as amended, of shares of Common Stock of RadiSys
Corporation issuable pursuant to its 2001 Nonqualified Stock Option Plan and
1996 Employee Stock Purchase Plan, as amended, including specifically, but
without limitation thereto, power and authority to sign his name (whether on
behalf of RadiSys Corporation or as an officer or director of said company, or
otherwise) to a Registration Statement on Form S-8 and any amendment thereto
(including any post-effective amendment) or application for amendment thereto in
respect to such Common Stock or any exhibits filed therewith; and to file the
same with the Securities and Exchange Commission; and the undersigned does
hereby ratify and confirm all that said attorneys-in-fact and agents may do or
cause to be done by virtue hereof.

DATED: July 16, 2002

                                            /s/C. SCOTT GIBSON
                                            ------------------------------------
                                            C. Scott Gibson

                                POWER OF ATTORNEY
   (2001 Nonqualified Stock Option Plan and 1996 Employee Stock Purchase Plan)

         The undersigned, an officer and/or director of RadiSys Corporation,
does hereby constitute and appoint Julia A. Harper and Ronald A. Dilbeck, and
each of them, his true and lawful attorneys-in-fact and agents to do any and all
acts and things and to execute in his name (whether on behalf of RadiSys
Corporation or as an officer or director of said company, or otherwise) any and
all instruments which said attorneys-in-fact and agents may deem necessary or
advisable in order to enable RadiSys Corporation to comply with the Securities
Act of 1933, as amended, and any requirements of the Securities and Exchange
Commission in respect thereof, in connection with the registration under the
Securities Act of 1933, as amended, of shares of Common Stock of RadiSys
Corporation issuable pursuant to its 2001 Nonqualified Stock Option Plan and
1996 Employee Stock Purchase Plan, as amended, including specifically, but
without limitation thereto, power and authority to sign his name (whether on
behalf of RadiSys Corporation or as an officer or director of said company, or
otherwise) to a Registration Statement on Form S-8 and any amendment thereto
(including any post-effective amendment) or application for amendment thereto in
respect to such Common Stock or any exhibits filed therewith; and to file the
same with the Securities and Exchange Commission; and the undersigned does
hereby ratify and confirm all that said attorneys-in-fact and agents may do or
cause to be done by virtue hereof.

DATED: July 16, 2002

                                            /s/JEAN-CLAUDE PETERSCHMITT
                                            ------------------------------------
                                            Jean-Claude Peterschmitt

                                POWER OF ATTORNEY
   (2001 Nonqualified Stock Option Plan and 1996 Employee Stock Purchase Plan)

         The undersigned, an officer and/or director of RadiSys Corporation,
does hereby constitute and appoint Julia A. Harper and Ronald A. Dilbeck, and
each of them, his true and lawful attorneys-in-fact and agents to do any and all
acts and things and to execute in his name (whether on behalf of RadiSys
Corporation or as an officer or director of said company, or otherwise) any and
all instruments which said attorneys-in-fact and agents may deem necessary or
advisable in order to enable RadiSys Corporation to comply with the Securities
Act of 1933, as amended, and any requirements of the Securities and Exchange
Commission in respect thereof, in connection with the registration under the
Securities Act of 1933, as amended, of shares of Common Stock of RadiSys
Corporation issuable pursuant to its 2001 Nonqualified Stock Option Plan and
1996 Employee Stock Purchase Plan, as amended, including specifically, but
without limitation thereto, power and authority to sign his name (whether on
behalf of RadiSys Corporation or as an officer or director of said company, or
otherwise) to a Registration Statement on Form S-8 and any amendment thereto
(including any post-effective amendment) or application for amendment thereto in
respect to such Common Stock or any exhibits filed therewith; and to file the
same with the Securities and Exchange Commission; and the undersigned does
hereby ratify and confirm all that said attorneys-in-fact and agents may do or
cause to be done by virtue hereof.

DATED: July 16, 2002

                                            /s/JEAN-PIERRE D. PATKAY
                                            ------------------------------------
                                            Jean-Pierre D. Patkay