EXHIBIT 4.03 B

                        AMENDMENT NO. 1 TO RADIUS INC.
                           1995 STOCK OPTION PLAN

                             December 12, 1996


         Section 4.3 is deleted in its entirety.

         Sections 5.4, 7.2, 14.1, 15, 17 and 19 are amended to read in their 
entirety as set forth below:

         5.4 EXERCISE PRICE. The Exercise Price shall be determined by the 
Committee when the Award is granted and shall be not less than 85% of the 
Fair Market Value of the Shares on the date of grant; PROVIDED, that (i) the 
Exercise Price of an ISO shall be not less than 100% of the Fair Market Value 
of the Shares on the date of grant and (ii) the Exercise Price of any Option 
granted to a Ten Percent Shareholder shall not be less than 110% of the Fair 
Market Value of the Shares on the date of grant. Payment for the Shares 
purchased may be made in accordance with Section 6 of the Plan.

         7.2 STOCK WITHHOLDING. When, under applicable tax laws, a 
Participant incurs tax liability in connection with the exercise of any Award 
that is subject to tax withholding and the Participant is obligated to pay 
the Company the amount required to be withheld, the Committee may allow the 
Participant to satisfy the minimum withholding tax obligation by electing to 
have the Company withhold from the Shares to be issued that number of Shares 
having a Fair Market Value equal to the minimum amount required to be 
withheld, determined on the date that the amount of tax to be withheld is to 
be determined. All elections by a Participant to have Shares withheld for 
this purpose shall be made in accordance with the requirements established by 
the Committee for such elections and be in writing in a form acceptable to 
the Committee.

         14.1 ASSUMPTION OR REPLACEMENT OF AWARDS BY SUCCESSOR. In the event 
of (a) a merger or consolidation in which the Company is not the surviving 
corporation (other than a merger or consolidation with a wholly-owned 
subsidiary, a reincorporation of the Company in a different jurisdiction, or 
other transaction in which there is no substantial change in the shareholders 
of the Company and the Awards granted under the Plan are assumed or replaced 
by the successor corporation, which assumption shall be binding on all 
Participants), (b) a merger in which the Company is the surviving corporation 
but after which the shareholders of the Company immediately prior to such 
merger (other than any shareholder which merges, or which owns or controls 
another corporation which merges with the Company in such merger) cease to 
own their shares or other equity interests in the Company, (c) a dissolution 
or liquidation of the Company, 

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(d) the sale of substantially all of the assets of the Company, or (e) any 
other transaction which qualifies as a "corporate transaction" under Section 
424(a) of the Code wherein the shareholders of the Company give up all of 
their equity interest in the Company (EXCEPT for the acquisition, sale or 
transfer of all or substantially all of the outstanding shares of the 
Company), any or all outstanding Awards may be assumed or replaced by the 
successor corporation (if any), which assumption or replacement shall be 
binding on all Participants. In the alternative, the successor corporation 
may substitute equivalent Awards or provide substantially similar 
consideration to Participants as was provided to shareholders (after taking 
into account the existing provisions of the Awards). The successor 
corporation may also issue, in place of outstanding Shares of the Company 
held by the Participant, substantially similar shares or other property 
subject to repurchase restrictions no less favorable to the Participant.

             In the event such successor corporation (if any) refuses to 
assume or substitute Options, as provided above, pursuant to a transaction 
described in this Subsection 14.1, such Options shall expire on such 
transaction at such times and on such conditions as the Board shall determine.

         15. ADOPTION AND SHAREHOLDER APPROVAL. The Plan shall become 
effective on the date that it is adopted by the Board (the "EFFECTIVE DATE"). 
The Plan shall be approved by the shareholders of the Company (excluding 
Shares issued pursuant to this Plan), consistent with applicable laws, within 
twelve months before or after the Effective Date. Upon the Effective Date, 
the Board may grant Awards pursuant to the Plan; PROVIDED, HOWEVER that: (a) 
no Award may be exercised prior to initial shareholder approval of the Plan; 
(b) no Award granted pursuant to an increase in the number of Shares approved 
by the Board shall be exercised prior to the time such increase has been 
approved by the shareholders of the Company; and (c) in the event that 
shareholder approval of such increase is not obtained within the time period 
provided herein, all Awards granted pursuant to such increase will be 
cancelled.

         17. AMENDMENT OR TERMINATION OF PLAN. The Board may at any time 
terminate or amend the Plan in any respect, including without limitation 
amendment of any form of Stock Option Agreement or instrument to be executed 
pursuant to the Plan; PROVIDED, HOWEVER, that no amendment may be made to 
outstanding Awards without the consent of the Participant.

         19. DEFINITIONS. As used in the Plan, the following terms shall have 
the following meanings:

             "AFFILIATE" means any corporation that directly, or indirectly 
through one or more intermediaries, controls or is controlled by, or is under 
common control with the Company where "control" (including the terms 
"controlled by" and "under common control with") means the possession, direct 
or indirect, of the power to cause the direction of the management and 
policies of the corporation, whether through the ownership of voting 
securities, by contract or otherwise.

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             "AWARD" means an award of an option to purchase Shares.

             "STOCK OPTION AGREEMENT" means, with respect to each Award, the 
signed written agreement between the Company and the Participant setting 
forth the terms and conditions of the Award.

             "BOARD" means the Board of Directors of the Company.

             "CODE" means the Internal Revenue Code of 1986, as amended.

             "COMMITTEE" means the committee appointed by the Board to 
administer the Plan, or if no committee is appointed, the Board.

             "COMPANY" means Radius Inc., a corporation organized under the 
laws of the State of California, or any successor corporation.

             "DISABILITY" means a disability, whether temporary or permanent, 
partial or total, within the meaning of Section 22(e)(3) of the Code, as 
determined by the Committee.

             "EXCHANGE ACT" means the Securities Exchange Act of 1934, as 
amended.

             "EXERCISE PRICE" means the price at which a holder of an Award 
may purchase the Shares issuable upon exercise of the Award.

             "FAIR MARKET VALUE" means the value of a share of the Company's 
Common Stock determined as follows:

                  (a) if such Common Stock is then quoted on the Nasdaq 
National Market the closing price on the Nasdaq National Market System, or, 
if no such reported sale takes place on such date, the closing price on the 
next preceding trading date on which a reported sale occurred;

                  (b) if such Common Stock is publicly traded and is then 
listed on a national securities exchange, the closing price or, if no 
reported sale takes place on such date, the closing price on the next 
preceding trading day on which a reported sale occurred;

                  (c) if such Common Stock is publicly traded but is not 
quoted on the Nasdaq National Market nor listed or admitted to trading on a 
national securities exchange, the average of the closing bid and asked prices 
on such date, as reported by THE WALL STREET JOURNAL, for the 
over-the-counter market; or

                  (d) if none of the foregoing is applicable, by the Board in 
good faith.

             "INSIDER" means an officer or director of the Company or any 
other person whose transactions in the Company's Common Stock are subject to 
Section 16 of the Exchange Act.

             "PARENT" means any corporation (other than the Company) in an 
unbroken chain of corporations ending with the Company, if at the time of the 
granting of an Award under the Plan, 


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each of such corporations other than the Company owns stock possessing 50% or 
more of the total combined voting power of all classes of stock in one of the 
other corporations in such chain.

             "PARTICIPANT" means a person who receives an Award under the 
Plan.

             "PLAN" means this Radius Inc. 1995 Stock Option Plan, as amended 
from time-to-time.

             "SEC" means the Securities and Exchange Commission.

             "SECURITIES ACT" means the Securities Act of 1933, as amended.

             "SHARES" means shares of the Company's Common Stock, no par 
value, reserved for issuance under the Plan, as adjusted pursuant to Sections 
2 and 14, and any successor security.

             "SUBSIDIARY" means any corporation (other than the Company) in 
an unbroken chain of corporations beginning with the Company if, at the time 
of granting of the Award, each of the corporations other than the last 
corporation in the unbroken chain owns stock possessing 50% or more of the 
total combined voting power of all classes of stock in one of the other 
corporations in such chain.

             "TERMINATION" or "TERMINATED" means, for purposes of the Plan 
with respect to a Participant, that the Participant has ceased to provide 
services as an employee, director, consultant, independent contractor or 
adviser, to the Company or a Parent, Subsidiary or Affiliate of the Company, 
except in the case of sick leave, military leave, or any other leave of 
absence approved by the Committee; PROVIDED, that such leave is for a period 
of not more than ninety (90) days, or reinstatement upon the expiration of 
such leave is guaranteed by contract or statute or unless provided otherwise 
pursuant to formal policy adopted from time to time by the Company and issued 
and promulgated to employees in writing. In the case of any employee on an 
approved leave of absence, the Committee may make such provisions respecting 
suspension of vesting as it may deem appropriate, except that in no event may 
an Option be exercised after the expiration of the term set forth in the 
Stock Option Agreement. The Committee shall have sole discretion to determine 
whether a Participant has ceased to provide services and the effective date 
on which the Participant ceased to provide services (the "TERMINATION DATE").


                                   Radius Inc.


                                   By: /s/ Cherrie L. Fosco
                                      ------------------------------------
                                      Cherrie L. Fosco
                                      Vice President and Corporate Controller


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