<PAGE>
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(AMENDMENT NO. 1)*
MICROWARE SYSTEMS CORPORATION
(Name of Issuer)
Common Stock, no par value
(Title of Class of Securities)
595150 10 3
(CUSIP Number)
*The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which
would alter the disclosures provided in a prior cover page.
The information required in the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section
of the Act but shall be subject to all other provisions of the Act (however,
see the Notes).
Page 1 of 4 pages
<PAGE>
SCHEDULE 13G
CUSIP NO. 595150 10 3 PAGE 2 OF 4 PAGES
----------- --- ---
_____________________________________________________________________________
1 NAME OF REPORTING PERSON
S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Microware Profit Sharing Plan
_____________________________________________________________________________
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) / /
(b) / X /
_____________________________________________________________________________
3 SEC USE ONLY
_____________________________________________________________________________
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Iowa
_____________________________________________________________________________
5 SOLE VOTING POWER
569,757
___________________________________________________________
NUMBER OF 6 SHARED VOTING POWER
SHARES
BENEFICIALLY 0
OWNED BY ___________________________________________________________
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0
WITH ___________________________________________________________
8 SHARED DISPOSITIVE POWER
0
_____________________________________________________________________________
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
PERSON
569,757
_____________________________________________________________________________
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES* / /
_____________________________________________________________________________
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
3.93
_____________________________________________________________________________
12 TYPE OF REPORTING PERSON*
EP
_____________________________________________________________________________
<PAGE>
ITEM 1 (a) Name of Issuer: Microware Systems Corporation
ITEM 1 (b) Address of Issuer's Principal Executive Offices:
1500 NW 118th Street, Des Moines, Iowa 50325
ITEM 2 (a) Name of Person Filing: Microware Profit Sharing Plan (the
"Plan")
ITEM 2 (b) Address of Principal Business Office, or, if none, Residence:
1500 NW 118th Street
Des Moines, Iowa 50325
ITEM 2 (c) Citizenship: Iowa
ITEM 2 (d) Title of Class of Securities:
Common Stock, no par value
ITEM 2 (e) CUSIP Number: 595150 10 3
ITEM 3 Not applicable. (This Schedule is filed pursuant to
Rule 13d-1(c).)
ITEM 4 Ownership:
The following information is provided as of December 31, 1997:
(a) Amount Beneficially Owned: 569,757 shares
(b) Percent of Class: 3.93%
(c) At the recommendation of the Advisory Committee, the
Trustees of the Plan have the sole power to vote the
shares and the participants in the plan have the sole
power to direct disposition of the shares.
Page 3 of 4 pages
<PAGE>
ITEM 5 Ownership of Five Percent or Less of a Class:
If this statement is being filed to report the fact that as of
the date hereof the reporting person has ceased to be the
beneficial owner of more than five percent of the class of
securities, check the following [X].
ITEM 6 Ownership of More than Five Percent on Behalf of Another Person:
See response to Item 4.
ITEM 7 Identification and Classification of the Subsidiary Which
Acquired the Security Being Reported on By the Parent Holding
Company:
Not applicable.
ITEM 8 Identification and Classification of Members of the Group:
Not applicable.
ITEM 9 Notice of Dissolution of Group:
Not applicable.
ITEM 10 Certification:
Not applicable.
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete
and correct.
February 3, 1998
___________________________________
Date
MICROWARE PROFIT SHARING PLAN
By: /s/ Debbie J. Hogue, Trust Officer
__________________________________
Norwest Bank Iowa, N.A. Trustee
of the Plan
ATTENTION: INTENTIONAL MISSTATEMENTS OR OMISSIONS OF FACT CONSTITUTE FEDERAL
CRIMINAL VIOLATIONS (SEE 18 U.S.C. 1001).
Page 4 of 4 pages