Exhibit (a)(1)(M)

                               RADISYS CORPORATION
                          Stock Option Exchange Program

                CONFIRMATION OF CANCELLATION OF TENDERED OPTIONS
                        AND PROMISE TO GRANT NEW OPTIONS

                                August ___, 2003

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Dear <>,

      RadiSys has accepted your election to exchange all of your eligible
options to purchase RadiSys common stock (referred to as "exchanged options")
for replacement under RadiSys' Stock Option Exchange Program. As a result of
your election and our acceptance, we hereby confirm that these exchanged options
were cancelled on Thursday, August 28, 2003.

      In exchange for your agreement to cancel {__________} options, RadiSys
hereby promises to grant you a nonstatutory stock option to purchase [________]
shares of RadiSys' common stock granted under the 2001 Nonqualified Stock Option
Plan of RadiSys Corporation (referred to as the "New Option"). We will grant the
New Option on the New Option grant date, which we anticipate will be no earlier
than Monday, March 1, 2004. The exercise price of each New Option will be equal
to the closing price for shares of our common stock as reported by the Nasdaq
National Market on the New Option grant date.

      All New Options granted in exchange for eligible options will not be
exercisable for six months after the date of the grant, after which the options
will be exercisable for one-third of the total option shares, and become
exercisable in monthly increments equal to 1/36th of the total option shares,
cumulatively, each month thereafter, becoming fully exercisable two and one-half
years after the date of the grant, subject to your continued employment with
RadiSys or one of RadiSys' subsidiaries. This vesting schedule applies to all
New Options, regardless of the vested position of the options you elected to
exchange. Each New Option granted in exchange for eligible options will have a
term of seven years from the New Option grant date.

      In order to receive your New Option, you must continue to be employed by
RadiSys or one of its subsidiaries on the New Option grant date. This Promise
does not constitute a guarantee of employment with RadiSys or any of its
subsidiaries for any period. Unless expressly provided by the applicable laws of
a non-U.S. jurisdiction, your employment with RadiSys or its subsidiaries will
remain "at will" and can be terminated by you or RadiSys at any time, with or
without cause or notice. If your employment with RadiSys or one of its
subsidiaries terminates before the New Option grant date for any reason,
including a reduction-in-force, you will lose all rights under this Promise to
receive a New Option.

      This Promise is subject to the terms and conditions of the Exchange
Program as set forth in: (1) the Stock Option Exchange Program Tender Offer
Statement; (2) the Stock Option Exchange Program Overview; (3) the Stock Option
Exchange Program Frequently Asked Questions; (4) the Web Site Election Forms;
(5) the Hard Copy Election Form; and (6) the Telephonic Election Form Script
(collectively, the "Exchange Offer Documents"), all of which are incorporated
herein by reference. This Promise and the Exchange Offer Documents reflect the
entire agreement between you and RadiSys with respect to this transaction. This
Promise may be amended only by means of a writing signed by you and an
authorized officer of RadiSys.

RADISYS CORPORATION


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By:    Julia Harper
    -----------------------------
Title: Chief Financial Officer
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