QUICKLOGIC CORPORATION
SC 13G, 2000-02-14
SEMICONDUCTORS & RELATED DEVICES
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  Schedule 13G
                                 (Rule 13d-102)

   INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1 (b),
               (c) AND (d) AND AMENDMENTS THERETO FILED PURSUANT
                                  TO 13d-2 (b)

                             (Amendment No._______)*

                             QuickLogic Corporation
- --------------------------------------------------------------------------------
                                (Name of Issuer)

                                  Common Stock
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                    74837P108
- --------------------------------------------------------------------------------
                                 (CUSIP Number)

                                December 31, 1999
- --------------------------------------------------------------------------------
             (Date of Event Which Requires Filing of this Statement)

Check the  appropriate box to designate the rule pursuant to which this Schedule
is filed:

             [ ]    Rule 13d-1(b)

             [ ]    Rule 13d-1(c)

             [X]    Rule 13d-1(d)

*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
disclosures provided in a prior cover page.

The information required on 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).

                         (Continued on following pages)

                               Page 1 of 20 Pages


<PAGE>



<TABLE>
<CAPTION>
<S>                                                                            <C>

- ----------------------------------------------------------                     --------------------------------------
CUSIP NO.    74837P108                                            13 G                  Page 2 of 20 Pages
- ----------------------------------------------------------                     --------------------------------------

- ------------ ---------------------------------------------------------------------------------------------------------

1            NAME OF REPORTING PERSON

             I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
                      Technology Venture Investors-4, L.P. ("TVI-4")
                      Tax ID Number:  94-3088804
- ------------ ---------------------------------------------------------------------------------------------------------

2            CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                    (a)  [ ]             (b)  [X]
- ------------ ---------------------------------------------------------------------------------------------------------

3            SEC USE ONLY

- ------------ ---------------------------------------------------------------------------------------------------------

4            CITIZENSHIP OR PLACE OF ORGANIZATION

             Delaware
- ------------------------------------ -------- ------------------------------------------------------------------------

            NUMBER OF                 5       SOLE VOTING POWER
             SHARES
          BENEFICIALLY                        1,420,571 shares, except that TVIM-4, the general partner of TVI-4, may
          OWNED BY EACH                       be deemed to have sole voting power,  and John  Johnston  ("Johnston"),
            REPORTING                         Robert C. Kagle ("Kagle"), David F. Marquardt ("Marquardt"),  Burton J.
             PERSON                           McMurtry  ("McMurtry")  and  Mark G.  Wilson  ("Wilson"),  the  general
              WITH                            partners of TVIM-4,  may be deemed to have  shared  power to vote these
                                              shares.
                                     -------- ------------------------------------------------------------------------

                                     6        SHARED VOTING POWER
                                              See response to row 5.
                                     -------- ------------------------------------------------------------------------

                                     7        SOLE DISPOSITIVE POWER

                                              1,420,571 shares, except that TVIM-4, the general partner of TVI-4, may
                                              be  deemed  to  have  sole  dispositive  power,  and  Johnston,  Kagle,
                                              Marquardt,  McMurtry and Wilson, the general partners of TVIM-4, may be
                                              deemed to have shared power to dispose of these shares.
                                     -------- ------------------------------------------------------------------------

                                     8        SHARED DISPOSITIVE POWER
                                              See response to row 7.
- ------------ ---------------------------------------------------------------------------------------------------------

9            AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
             REPORTING PERSON                                                                       1,420,571

- ------------ ---------------------------------------------------------------------------------------------------------

10           CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
             EXCLUDES CERTAIN SHARES*                                                                             [ ]

- ------------ ---------------------------------------------------------------------------------------------------------

11           PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                    8.05%

- ------------ ---------------------------------------------------------------------------------------------------------

12           TYPE OF REPORTING PERSON*

             PN
- ------------ ---------------------------------------------------------------------------------------------------------
<FN>
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

</FN>
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
<S>                                                                            <C>

- ----------------------------------------------------------                     --------------------------------------
CUSIP NO.    74837P108                                           13 G                  Page 3 of 20 Pages
- ----------------------------------------------------------                     --------------------------------------

- ------------ ---------------------------------------------------------------------------------------------------------

1            NAME OF REPORTING PERSON

             I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
                      TVI Partners-4, L.P. ("TVIP-4")
                      Tax ID Number:  94-3084677
- ------------ ---------------------------------------------------------------------------------------------------------

2            CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                    (a)  [ ]             (b)  [X]
- ------------ ---------------------------------------------------------------------------------------------------------

3            SEC USE ONLY

- ------------ ---------------------------------------------------------------------------------------------------------

4            CITIZENSHIP OR PLACE OF ORGANIZATION

             Delaware
- ------------------------------------ -------- ------------------------------------------------------------------------
         NUMBER OF
          SHARES                      5        SOLE VOTING POWER
       BENEFICIALLY
       OWNED BY EACH                           166,039 shares,  except that TVIM-4, the general partner of TVIP-4, may
         REPORTING                             be deemed to have sole voting power,  and John  Johnston  ("Johnston"),
          PERSON                               Robert C. Kagle ("Kagle"), David F. Marquardt ("Marquardt"),  Burton J.
           WITH                                McMurtry  ("McMurtry")  and  Mark G.  Wilson  ("Wilson"),  the  general
                                               partners of TVIM-4,  may be deemed to have  shared  power to vote these
                                               shares.
                                     -------- ------------------------------------------------------------------------

                                     6        SHARED VOTING POWER
                                              See response to row 5.
                                     -------- ------------------------------------------------------------------------

                                     7        SOLE DISPOSITIVE POWER

                                              166,039 shares,  except that TVIM-4, the general partner of TVIP-4, may
                                              be  deemed  to  have  sole  dispositive  power,  and  Johnston,  Kagle,
                                              Marquardt,  McMurtry and Wilson, the general partners of TVIM-4, may be
                                              deemed to have shared power to dispose of these shares.
                                     -------- ------------------------------------------------------------------------

                                     8        SHARED DISPOSITIVE POWER
                                              See response to row 7.
- ------------ ---------------------------------------------------------------------------------------------------------

9            AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
             REPORTING PERSON                                                                       166,039

- ------------ ---------------------------------------------------------------------------------------------------------

10           CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
             EXCLUDES CERTAIN SHARES*                                                                         [ ]

- ------------ ---------------------------------------------------------------------------------------------------------

11           PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                   0.94%

- ------------ ---------------------------------------------------------------------------------------------------------

12           TYPE OF REPORTING PERSON*

                                                                                                               PN
- ------------ ---------------------------------------------------------------------------------------------------------
<FN>
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

</FN>
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
<S>                                                                            <C>

- ----------------------------------------------------------                     --------------------------------------
CUSIP NO.    74837P108                                           13 G                  Page 4 of 20 Pages
- ----------------------------------------------------------                     --------------------------------------

- ------------ ---------------------------------------------------------------------------------------------------------

1            NAME OF REPORTING PERSON

             I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
                      TVI Associates-4, L.P. ("TVIA-4")
                      Tax ID Number:  94-3154357
- ------------ ---------------------------------------------------------------------------------------------------------

2            CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                    (a)  [ ]             (b)  [X]
- ------------ ---------------------------------------------------------------------------------------------------------

3            SEC USE ONLY

- ------------ ---------------------------------------------------------------------------------------------------------

4            CITIZENSHIP OR PLACE OF ORGANIZATION

             Delaware
- ------------------------------------ -------- ------------------------------------------------------------------------
           NUMBER OF
            SHARES                      5        SOLE VOTING POWER
         BENEFICIALLY
         OWNED BY EACH                        5,021 shares,  except that TVIM-4, the general partner of TVIA-4, may be
           REPORTING                          deemed to have sole voting power, and John Johnston ("Johnston"), Robert
            PERSON                            C. Kagle ("Kagle"), David F. Marquardt ("Marquardt"), Burton J. McMurtry
             WITH                             ("McMurtry")  and Mark G. Wilson  ("Wilson"),  the  general  partners of
                                              TVIM-4,  may be  deemed  to have  shared  power  to vote  these  shares.
                                     -------- ------------------------------------------------------------------------

                                     6        SHARED VOTING POWER
                                              See response to row 5.
                                    -------- ------------------------------------------------------------------------

                                     7        SOLE DISPOSITIVE POWER

                                              5,021 shares,  except that TVIM-4, the general partner of TVIA-4, may be
                                              deemed to have sole dispositive power, and Johnston,  Kagle,  Marquardt,
                                              McMurtry and Wilson,  the general  partners of TVIM-4,  may be deemed to
                                              have shared power to dispose of these shares.
                                     -------- ------------------------------------------------------------------------

                                     8        SHARED DISPOSITIVE POWER
                                              See response to row 7.
- ------------------------------------ -------- ------------------------------------------------------------------------

9            AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
             REPORTING PERSON                                                                       5,021

- ------------ ---------------------------------------------------------------------------------------------------------

10           CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
             EXCLUDES CERTAIN SHARES*                                                                         [ ]

- ------------ ---------------------------------------------------------------------------------------------------------

11           PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                    0.03%

- ------------ ---------------------------------------------------------------------------------------------------------

12           TYPE OF REPORTING PERSON*

             PN
- ------------ ---------------------------------------------------------------------------------------------------------
<FN>
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>
<S>                                                                            <C>

- ----------------------------------------------------------                     --------------------------------------
CUSIP NO.    74837P108                                            13 G                  Page 5 of 20 Pages
- ----------------------------------------------------------                     --------------------------------------
- ------------ ---------------------------------------------------------------------------------------------------------

1            NAME OF REPORTING PERSON

             I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
                      TVI Associates-4 1988, L.P. ("TVIA `88-4")
                      Tax ID Number:  94-3084676
- ------------ --------------------------------------------------------------------------------------------------------

2            CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                    (a)  [ ]             (b)  [X]
- ------------ ---------------------------------------------------------------------------------------------------------

3            SEC USE ONLY

- ------------ ---------------------------------------------------------------------------------------------------------

4            CITIZENSHIP OR PLACE OF ORGANIZATION

             Delaware
- ------------------------------------ -------- ------------------------------------------------------------------------
           NUMBER OF
            SHARES                   5        SOLE VOTING POWER
         BENEFICIALLY
         OWNED BY EACH                        4,664 shares, except that TVIM-4, the general partner of TVIA `88-4, may
           REPORTING                          be deemed to have sole voting  power,  and John  Johnston  ("Johnston"),
            PERSON                            Robert C. Kagle ("Kagle"),  David F. Marquardt ("Marquardt"),  Burton J.
             WITH                             McMurtry  ("McMurtry")  and  Mark  G.  Wilson  ("Wilson"),  the  general
                                              partners  of TVIM-4,  may be deemed to have  shared  power to vote these
                                              shares.
                                     -------- ------------------------------------------------------------------------

                                     6        SHARED VOTING POWER
                                              See response to row 5.
                                     -------- ------------------------------------------------------------------------

                                     7        SOLE DISPOSITIVE POWER

                                              4,664 shares, except that TVIM-4, the general partner of TVIA `88-4, may
                                              be  deemed  to  have  sole  dispositive  power,  and  Johnston,   Kagle,
                                              Marquardt,  McMurtry and Wilson,  the general partners of TVIM-4, may be
                                              deemed to have shared power to dispose of these shares.
                                     -------- ------------------------------------------------------------------------

                                     8        SHARED DISPOSITIVE POWER
                                              See response to row 7.
- ------------ ---------------------------------------------------------------------------------------------------------

9            AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
             REPORTING PERSON                                                                       4,664

- ------------ ---------------------------------------------------------------------------------------------------------

10           CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
             EXCLUDES CERTAIN SHARES*                                                                         [ ]

- ------------ ---------------------------------------------------------------------------------------------------------

11           PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                    0.03%

- ------------ ---------------------------------------------------------------------------------------------------------

12           TYPE OF REPORTING PERSON*

             PN
- ------------ ---------------------------------------------------------------------------------------------------------
<FN>
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>
<S>                                                                            <C>

- ----------------------------------------------------------                     --------------------------------------
CUSIP NO.    74837P108                                            13 G                  Page 6 of 20 Pages
- ----------------------------------------------------------                     --------------------------------------

- ------------ ---------------------------------------------------------------------------------------------------------

1            NAME OF REPORTING PERSON

             I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
                      TVI Management-4, L.P. ("TVIM-4")
                      Tax ID Number:  94-3088676
- ------------ ---------------------------------------------------------------------------------------------------------

2            CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                    (a)  [ ]             (b)  [X]
- ------------ ---------------------------------------------------------------------------------------------------------

3            SEC USE ONLY

- ------------ ---------------------------------------------------------------------------------------------------------

4            CITIZENSHIP OR PLACE OF ORGANIZATION

             Delaware
- ------------------------------------ -------- ------------------------------------------------------------------------

              NUMBER OF              5        SOLE VOTING POWER
               SHARES
            BENEFICIALLY                      1,596,295 shares of which 1,420,571 are directly owned by TVI-4, 166,039
            OWNED BY EACH                     are directly  owned by TVIP-4,  5,021 are  directly  owned by TVIA-4 and
              REPORTING                       4,664 are directly owned by TVIA `88-4. TVIM-4 is the general partner of
               PERSON                         TVI-4,  TVIP-4,  TVIA-4 and TVIA  `88-4,  and may be deemed to have sole
                WITH                          power to vote such shares.

                                     -------- ------------------------------------------------------------------------

                                     6        SHARED VOTING POWER
                                              See response to row 5.
                                     -------- ------------------------------------------------------------------------

                                     7        SOLE DISPOSITIVE POWER

                                              1,596,295 shares of which 1,420,571 are directly owned by TVI-4, 166,039
                                              are directly  owned by TVIP-4,  5,021 are  directly  owned by TVIA-4 and
                                              4,664 are directly owned by TVIA `88-4. TVIM-4 is the general partner of
                                              TVI-4,  TVIP-4,  TVIA-4 and TVIA  `88-4,  and may be deemed to have sole
                                              power to dispose of such shares.
                                     -------- ------------------------------------------------------------------------

                                     8        SHARED DISPOSITIVE POWER
                                              See response to row 7.
- ------------------------------------ -------- ------------------------------------------------------------------------

9            AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
             REPORTING PERSON                                                                       1,596,294
- ------------ ---------------------------------------------------------------------------------------------------------

10           CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
             EXCLUDES CERTAIN SHARES*                                                                         [ ]
- ------------ ---------------------------------------------------------------------------------------------------------

11           PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                    9.05%
- ------------ ---------------------------------------------------------------------------------------------------------

12           TYPE OF REPORTING PERSON*

             PN
- ------------ ---------------------------------------------------------------------------------------------------------
<FN>
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>


<PAGE>
<TABLE>
<CAPTION>
<S>                                                                            <C>

- ----------------------------------------------------------                     --------------------------------------
CUSIP NO.    74837P108                                          13 G                  Page 7 of 20 Pages
- ----------------------------------------------------------                     --------------------------------------


- ------------ ---------------------------------------------------------------------------------------------------------

1            NAME OF REPORTING PERSON

             I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
                      Technology Venture Investors-3, L.P. ("TVI-3")
                      Tax ID Number:  94-2944879
- ------------ ---------------------------------------------------------------------------------------------------------

2            CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                    (a)  [ ]             (b)  [X]
- ------------ ---------------------------------------------------------------------------------------------------------

3            SEC USE ONLY

- ------------ ---------------------------------------------------------------------------------------------------------

4            CITIZENSHIP OR PLACE OF ORGANIZATION

             California
- ------------------------------------ -------- ------------------------------------------------------------------------
         NUMBER OF
          SHARES                     5        SOLE VOTING POWER
       BENEFICIALLY
       OWNED BY EACH                          84,131 shares,  except that TVIM-3, the general partner of TVI-3, may be
         REPORTING                            deemed to have sole voting power, and John Johnston ("Johnston"), Robert
          PERSON                              C. Kagle ("Kagle"), David F. Marquardt ("Marquardt"), Burton J. McMurtry
           WITH                               ("McMurtry")  and Mark G. Wilson  ("Wilson"),  the  general  partners of
                                              TVIM-3,  may be  deemed  to have  shared  power  to vote  these  shares.
                                     -------- ------------------------------------------------------------------------

                                     6        SHARED VOTING POWER
                                              See response to row 5.
                                     -------- ------------------------------------------------------------------------

                                     7        SOLE DISPOSITIVE POWER

                                              84,131 shares,  except that TVIM-3, the general partner of TVI-3, may be
                                              deemed to have sole dispositive power, and Johnston,  Kagle,  Marquardt,
                                              McMurtry and Wilson,  the general  partners of TVIM-3,  may be deemed to
                                              have shared power to dispose of these shares.
                                     -------- ------------------------------------------------------------------------

                                     8        SHARED DISPOSITIVE POWER
                                              See response to row 7.
- ------------ ---------------------------------------------------------------------------------------------------------

9            AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
             REPORTING PERSON                                                                       84,131

- ------------ ---------------------------------------------------------------------------------------------------------

10           CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
             EXCLUDES CERTAIN SHARES*                                                                          [ ]

- ------------ ---------------------------------------------------------------------------------------------------------

11           PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                    0.48%

- ------------ ---------------------------------------------------------------------------------------------------------

12           TYPE OF REPORTING PERSON*

             OO
- ------------ ---------------------------------------------------------------------------------------------------------
<FN>
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

</FN>
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
<S>                                                                            <C>

- ----------------------------------------------------------                     --------------------------------------
CUSIP NO.    74837P108                                           13 G                  Page 8 of 20 Pages
- ----------------------------------------------------------                     --------------------------------------

- ------------ ---------------------------------------------------------------------------------------------------------

1            NAME OF REPORTING PERSON

             I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
                      TVI Management-3, L.P. ("TVIM-3")
                      Tax ID Number:  94-2944878
- ------------ ---------------------------------------------------------------------------------------------------------

2            CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                    (a)  [ ]             (b)  [X]
- ------------ ---------------------------------------------------------------------------------------------------------

3            SEC USE ONLY

- ------------ ---------------------------------------------------------------------------------------------------------

4            CITIZENSHIP OR PLACE OF ORGANIZATION

             California
- ------------ ---------------------------------------------------------------------------------------------------------

                NUMBER OF            5        SOLE VOTING POWER
                 SHARES
              BENEFICIALLY                    85,746  shares,  of which 1,615 are directly  owned by TVIM-3 and 84,131
              OWNED BY EACH                   are directly owned by TVI-3. John Johnston ("Johnston"), Robert C. Kagle
                REPORTING                     ("Kagle"),   David  F.  Marquardt  ("Marquardt"),   Burton  J.  McMurtry
                 PERSON                       ("McMurtry")  and Mark G. Wilson  ("Wilson"),  the  general  partners of
                  WITH                        TVIM-3, may be deemed to have shared power to vote these shares.

                                     -------- ------------------------------------------------------------------------

                                     6        SHARED VOTING POWER
                                              See response to row 5.
                                     -------- ------------------------------------------------------------------------

                                     7        SOLE DISPOSITIVE POWER

                                              85,746  shares,  of which 1,615 are directly  owned by TVIM-3 and 84,131
                                              are directly owned by TVI-3. Johnston,  Kagle,  Marquardt,  McMurtry and
                                              Wilson,  the general  partners  of TVIM-3,  may be deemed to have shared
                                              dispositive power with respect to these shares.
                                     -------- ------------------------------------------------------------------------

                                     8        SHARED DISPOSITIVE POWER
                                              See response to row 7.
- ------------ ---------------------------------------------------------------------------------------------------------

9            AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
             REPORTING PERSON                                                                       85,746

- ------------ ---------------------------------------------------------------------------------------------------------

10           CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
             EXCLUDES CERTAIN SHARES*                                                                        [ ]

- ------------ ---------------------------------------------------------------------------------------------------------

11           PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                    0.49%

- ------------ ---------------------------------------------------------------------------------------------------------

12           TYPE OF REPORTING PERSON*

             OO

- ------------ ---------------------------------------------------------------------------------------------------------
<FN>
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

</FN>
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
<S>                                                                            <C>

- ----------------------------------------------------------                     --------------------------------------
CUSIP NO.   74837P108                                            13 G                  Page 9 of 20 Pages
- ----------------------------------------------------------                     --------------------------------------

- ------------ ---------------------------------------------------------------------------------------------------------
             NAME OF REPORTING PERSON

1            I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
                      John Johnston ("Johnston")
                      Tax ID Number:
- ------------ ---------------------------------------------------------------------------------------------------------

2            CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                    (a)  [ ]             (b)  [X]
- ------------ ---------------------------------------------------------------------------------------------------------

3            SEC USE ONLY

- ------------ ---------------------------------------------------------------------------------------------------------

4            CITIZENSHIP OR PLACE OF ORGANIZATION

             U.S. Citizen
- ------------------------------------ -------- ------------------------------------------------------------------------
             NUMBER OF
              SHARES                 5        SOLE VOTING POWER
           BENEFICIALLY                       0 shares
           OWNED BY EACH
             REPORTING               -------- ------------------------------------------------------------------------
              PERSON
               WITH                  6        SHARED VOTING POWER

                                              1,682,041 shares, of which 84,131 are directly owned by TVI-3, 1,615 are
                                              directly owned by TVIM-3, 1,420,571 are directly owned by TVI-4, 166,039
                                              are directly  owned by TVIP-4,  5,021 are  directly  owned by TVIA-4 and
                                              4,664 are directly owned by TVIA `88-4. Johnston is a general partner of
                                              TVIM-3, the general partner of TVI-3, and of TVIM-4, the general partner
                                              of  TVI-4,  TVIP-4,  TVIA-4  and TVIA  `88-4,  and may be deemed to have
                                              shared power to vote such shares.
                                     -------- ------------------------------------------------------------------------

                                     7        SOLE DISPOSITIVE POWER

                                              0 shares
                                     -------- ------------------------------------------------------------------------

                                     8        SHARED DISPOSITIVE POWER

                                              1,682,041 shares, of which 84,131 are directly owned by TVI-3, 1,615 are
                                              directly owned by TVIM-3, 1,420,571 are directly owned by TVI-4, 166,039
                                              are directly  owned by TVIP-4,  5,021 are  directly  owned by TVIA-4 and
                                              4,664 are directly owned by TVIA `88-4. Johnston is a general partner of
                                              TVIM-3, the general partner of TVI-3, and of TVIM-4, the general partner
                                              of  TVI-4,  TVIP-4,  TVIA-4  and TVIA  `88-4,  and may be deemed to have
                                              shared power to dispose of such shares.
- ------------ ---------------------------------------------------------------------------------------------------------

9            AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
             REPORTING PERSON                                                                       1,682,041

- ------------ ---------------------------------------------------------------------------------------------------------

10           CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
             EXCLUDES CERTAIN SHARES*                                                                         [ ]
- ------------ ---------------------------------------------------------------------------------------------------------

11           PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                    9.53%

- ------------ ---------------------------------------------------------------------------------------------------------

12           TYPE OF REPORTING PERSON*

             IN
- ------------ ---------------------------------------------------------------------------------------------------------
<FN>
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

</FN>
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
<S>                                                                            <C>

- ----------------------------------------------------------                     --------------------------------------
CUSIP NO.    74837P108                                            13 G                  Page 10 of 20 Pages
- ----------------------------------------------------------                     --------------------------------------

- ------------ ---------------------------------------------------------------------------------------------------------
             NAME OF REPORTING PERSON

1            I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
                      David F. Marquardt ("Marquardt")
                      Tax ID Number:
- ------------ ---------------------------------------------------------------------------------------------------------

2            CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                    (a)  [ ]             (b)  [X]

- ------------ ---------------------------------------------------------------------------------------------------------

3            SEC USE ONLY

- ------------ ---------------------------------------------------------------------------------------------------------

4            CITIZENSHIP OR PLACE OF ORGANIZATION

             U.S. Citizen
- ------------ ---------------------------------------------------------------------------------------------------------
            NUMBER OF
             SHARES                 5         SOLE VOTING POWER
          BENEFICIALLY                        0 shares
          OWNED BY EACH
            REPORTING               --------  ------------------------------------------------------------------------
             PERSON
              WITH                  6         SHARED VOTING POWER

                                              1,682,041 shares, of which 84,131 are directly owned by TVI-3, 1,615 are
                                              directly owned by TVIM-3, 1,420,571 are directly owned by TVI-4, 166,039
                                              are directly  owned by TVIP-4,  5,021 are  directly  owned by TVIA-4 and
                                              4,664 are directly owned by TVIA `88-4.  Marquardt is a general  partner
                                              of TVIM-3,  the  general  partner of TVI-3,  and of TVIM-4,  the general
                                              partner of TVI-4,  TVIP-4,  TVIA-4 and TVIA `88-4,  and may be deemed to
                                              have shared power to vote such shares.
                                     -------- ------------------------------------------------------------------------

                                     7        SOLE DISPOSITIVE POWER

                                              0 shares
                                     -------- ------------------------------------------------------------------------

                                     8        SHARED DISPOSITIVE POWER

                                              1,682,041 shares, of which 84,131 are directly owned by TVI-3, 1,615 are
                                              directly owned by TVIM-3, 1,420,571 are directly owned by TVI-4, 166,039
                                              are directly  owned by TVIP-4,  5,021 are  directly  owned by TVIA-4 and
                                              4,664 are directly owned by TVIA `88-4.  Marquardt is a general  partner
                                              of TVIM-3,  the  general  partner of TVI-3,  and of TVIM-4,  the general
                                              partner of TVI-4,  TVIP-4,  TVIA-4 and TVIA `88-4,  and may be deemed to
                                              have shared power to dispose of such shares.
- ------------ ---------------------------------------------------------------------------------------------------------

9            AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
             REPORTING PERSON                                                                       1,682,041

- ------------ ---------------------------------------------------------------------------------------------------------

10           CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
             EXCLUDES CERTAIN SHARES*                                                                         [ ]

- ------------ ---------------------------------------------------------------------------------------------------------

11           PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                    9.3%

- ------------ ---------------------------------------------------------------------------------------------------------

12           TYPE OF REPORTING PERSON*

             IN
- ------------ ---------------------------------------------------------------------------------------------------------
<FN>
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>
<S>                                                                            <C>

- ----------------------------------------------------------                     --------------------------------------
CUSIP NO.    74837P108                                          13 G                  Page 11 of 20 Pages
- ----------------------------------------------------------                     --------------------------------------

- ------------ ---------------------------------------------------------------------------------------------------------

1            NAME OF REPORTING PERSON

             I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
                      Robert C. Kagle ("Kagle")
                      Tax ID Number:
- ------------ ---------------------------------------------------------------------------------------------------------

2            CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                    (a)  [ ]             (b)  [X]
- ------------ ---------------------------------------------------------------------------------------------------------

3            SEC USE ONLY

- ------------ ---------------------------------------------------------------------------------------------------------

4            CITIZENSHIP OR PLACE OF ORGANIZATION

             U.S. Citizen
- ------------ ---------------------------------------------------------------------------------------------------------
           NUMBER OF
            SHARES                   5        SOLE VOTING POWER
         BENEFICIALLY                         0 shares
         OWNED BY EACH
           REPORTING                -------- ------------------------------------------------------------------------
            PERSON
             WITH                    6        SHARED VOTING POWER

                                              1,682,041 shares, of which 84,131 are directly owned by TVI-3, 1,615 are
                                              directly owned by TVIM-3, 1,420,571 are directly owned by TVI-4, 166,039
                                              are directly  owned by TVIP-4,  5,021 are  directly  owned by TVIA-4 and
                                              4,664 are directly  owned by TVIA `88-4.  Kagle is a general  partner of
                                              TVIM-3, the general partner of TVI-3, and of TVIM-4, the general partner
                                              of  TVI-4,  TVIP-4,  TVIA-4  and TVIA  `88-4,  and may be deemed to have
                                              shared power to vote such shares.
                                     -------- ------------------------------------------------------------------------

                                     7        SOLE DISPOSITIVE POWER

                                              0 shares
                                     -------- ------------------------------------------------------------------------

                                     8        SHARED DISPOSITIVE POWER

                                              1,682,041 shares, of which 84,131 are directly owned by TVI-3, 1,615 are
                                              directly owned by TVIM-3, 1,420,571 are directly owned by TVI-4, 166,039
                                              are directly  owned by TVIP-4,  5,021 are  directly  owned by TVIA-4 and
                                              4,664 are directly  owned by TVIA `88-4.  Kagle is a general  partner of
                                              TVIM-3, the general partner of TVI-3, and of TVIM-4, the general partner
                                              of  TVI-4,  TVIP-4,  TVIA-4  and TVIA  `88-4,  and may be deemed to have
                                              shared power to dispose of such shares.
- ------------ ---------------------------------------------------------------------------------------------------------

9            AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
             REPORTING PERSON                                                                       1,682,041

- ------------ ---------------------------------------------------------------------------------------------------------

10           CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
             EXCLUDES CERTAIN SHARES*                                                                            [ ]

- ------------ ---------------------------------------------------------------------------------------------------------

11           PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                    9.3%

- ------------ ---------------------------------------------------------------------------------------------------------

12           TYPE OF REPORTING PERSON*

             IN
- ------------ ---------------------------------------------------------------------------------------------------------
<FN>
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>
<S>                                                                            <C>

- ----------------------------------------------------------                     --------------------------------------
CUSIP NO.    74837P108                                            13 G                  Page 12 of 20 Pages
- ----------------------------------------------------------                     --------------------------------------

- ------------ ---------------------------------------------------------------------------------------------------------

1            NAME OF REPORTING PERSON

             I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
                      Burton J. McMurtry ("McMurtry")
                      Tax ID Number:
- ------------ ---------------------------------------------------------------------------------------------------------

2            CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                    (a)  [ ]             (b)  [X]

- ------------ ---------------------------------------------------------------------------------------------------------

3            SEC USE ONLY

- ------------ ---------------------------------------------------------------------------------------------------------

4            CITIZENSHIP OR PLACE OF ORGANIZATION

             U.S. Citizen
- ------------ ---------------------------------------------------------------------------------------------------------
            NUMBER OF
             SHARES                  5        SOLE VOTING POWER
          BENEFICIALLY                        0 shares
          OWNED BY EACH
            REPORTING                -------- ------------------------------------------------------------------------
             PERSON
              WITH                   6        SHARED VOTING POWER

                                              1,682,041 shares, of which 84,131 are directly owned by TVI-3, 1,615 are
                                              directly owned by TVIM-3, 1,420,571 are directly owned by TVI-4, 166,039
                                              are directly  owned by TVIP-4,  5,021 are  directly  owned by TVIA-4 and
                                              4,664 are directly owned by TVIA `88-4. McMurtry is a general partner of
                                              TVIM-3, the general partner of TVI-3, and of TVIM-4, the general partner
                                              of  TVI-4,  TVIP-4,  TVIA-4  and TVIA  `88-4,  and may be deemed to have
                                              shared power to vote such shares.
                                     -------- ------------------------------------------------------------------------

                                     7        SOLE DISPOSITIVE POWER

                                              0 shares
                                     -------- ------------------------------------------------------------------------

                                     8        SHARED DISPOSITIVE POWER

                                              1,682,041 shares, of which 84,131 are directly owned by TVI-3, 1,615 are
                                              directly owned by TVIM-3, 1,420,571 are directly owned by TVI-4, 166,039
                                              are directly  owned by TVIP-4,  5,021 are  directly  owned by TVIA-4 and
                                              4,664 are directly owned by TVIA `88-4. McMurtry is a general partner of
                                              TVIM-3, the general partner of TVI-3, and of TVIM-4, the general partner
                                              of  TVI-4,  TVIP-4,  TVIA-4  and TVIA  `88-4,  and may be deemed to have
                                              shared power to dispose of such shares.
- ------------ ---------------------------------------------------------------------------------------------------------

9            AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
             REPORTING PERSON                                                                       1,682,041

- ------------ ---------------------------------------------------------------------------------------------------------

10           CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
             EXCLUDES CERTAIN SHARES*                                                                           [ ]

- ------------ ---------------------------------------------------------------------------------------------------------

11           PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                    9.3%

- ------------ ---------------------------------------------------------------------------------------------------------

12           TYPE OF REPORTING PERSON*

             IN
- ------------ ---------------------------------------------------------------------------------------------------------
<FN>
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
</FN>
</TABLE>


<PAGE>

<TABLE>
<CAPTION>
<S>                                                                            <C>

- ----------------------------------------------------------                     --------------------------------------
CUSIP NO.    74837P108                                          13 G                  Page 13 of 20 Pages
- ----------------------------------------------------------                     --------------------------------------

- ------------ ---------------------------------------------------------------------------------------------------------

1            NAME OF REPORTING PERSON

             I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
                      Mark G. Wilson ("Wilson")
                      Tax ID Number:
- ------------ ---------------------------------------------------------------------------------------------------------

2            CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                                    (a)  [ ]             (b)  [X]

- ------------ ---------------------------------------------------------------------------------------------------------

3            SEC USE ONLY

- ------------ ---------------------------------------------------------------------------------------------------------

4            CITIZENSHIP OR PLACE OF ORGANIZATION

             U.S. Citizen
- ------------------------------------ -------- ------------------------------------------------------------------------

            NUMBER OF                5        SOLE VOTING POWER
             SHARES                           0 shares
          BENEFICIALLY
          OWNED BY EACH              -------- ------------------------------------------------------------------------
            REPORTING
             PERSON                  6        SHARED VOTING POWER
              WITH
                                              1,682,041 shares, of which 84,131 are directly owned by TVI-3, 1,615 are
                                              directly owned by TVIM-3, 1,420,571 are directly owned by TVI-4, 166,039
                                              are directly  owned by TVIP-4,  5,021 are  directly  owned by TVIA-4 and
                                              4,664 are directly owned by TVIA `88-4.  Wilson is a general  partner of
                                              TVIM-3, the general partner of TVI-3, and of TVIM-4, the general partner
                                              of  TVI-4,  TVIP-4,  TVIA-4  and TVIA  `88-4,  and may be deemed to have
                                              shared power to vote such shares.
                                     -------- ------------------------------------------------------------------------

                                     7        SOLE DISPOSITIVE POWER

                                              0 shares
                                     -------- ------------------------------------------------------------------------

                                     8        SHARED DISPOSITIVE POWER

                                              1,682,041 shares, of which 84,131 are directly owned by TVI-3, 1,615 are
                                              directly owned by TVIM-3, 1,420,571 are directly owned by TVI-4, 166,039
                                              are directly  owned by TVIP-4,  5,021 are  directly  owned by TVIA-4 and
                                              4,664 are directly owned by TVIA `88-4.  Wilson is a general  partner of
                                              TVIM-3, the general partner of TVI-3, and of TVIM-4, the general partner
                                              of  TVI-4,  TVIP-4,  TVIA-4  and TVIA  `88-4,  and may be deemed to have
                                              shared power to dispose of such shares.
- ------------------------------------ -------- ------------------------------------------------------------------------

9            AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
             REPORTING PERSON                                                                       1,682,041

- ------------ ---------------------------------------------------------------------------------------------------------

10           CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
             EXCLUDES CERTAIN SHARES*                                                                         [ ]

- ------------ ---------------------------------------------------------------------------------------------------------

11           PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                    9.3%

- ------------ ---------------------------------------------------------------------------------------------------------

12           TYPE OF REPORTING PERSON*

             IN
- ------------ ---------------------------------------------------------------------------------------------------------
<FN>
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

</FN>
</TABLE>

<PAGE>




                               Page 14 of 20 Pages

ITEM 1(a).        NAME OF ISSUER:

                  QuickLogic Corporation

ITEM 1(b).        ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:

                  1277 Orleans Drive
                  Sunnyvale, California 94089

ITEM 2(a).        NAME OF PERSONS FILING:

                  This  Statement is filed by  Technology  Venture  Investors-3,
                  L.P.,  a  California  limited   partnership   ("TVI-3"),   TVI
                  Management-3,   L.P.,   a   California   limited   partnership
                  ("TVIM-3"),  Technology Venture Investors-4,  L.P., a Delaware
                  limited  partnership  ("TVI-4"),   TVI  Partners-4,   L.P.,  a
                  Delaware limited  partnership  ("TVIP-4"),  TVI  Associates-4,
                  L.P.,  a  Delaware   limited   partnership   ("TVIA-4"),   TVI
                  Associates-4  1988,  L.P.,  a  Delaware  limited   partnership
                  ("TVIA `88-4"),  TVI  Management-4,  L.P., a Delaware  limited
                  partnership  ("TVIM-4"),  Robert C. Kagle ("Kagle"),  David F.
                  Marquardt ("Marquardt"), Burton J. McMurtry ("McMurtry"), Mark
                  G. Wilson  ("Wilson") and John R. Johnston  ("Johnston").  The
                  foregoing  entities and individuals are collectively  referred
                  to as the "Reporting Persons."

                  TVIM-3 is the general  partner of TVI-3,  and may be deemed to
                  have sole power to vote and sole power to dispose of shares of
                  the  issuer  directly  owned  by  TVI-3.   Kagle,   Marquardt,
                  McMurtry,  Wilson and  Johnston  are the  general  partners of
                  TVIM-3,  and may be  deemed to have  shared  power to vote and
                  shared power to dispose of the shares of issuer directly owned
                  by TVI-3 and TVIM-3.

                  TVIM-4 is the  general  partner of TVI-4,  TVIP-4,  TVIA-4 and
                  TVIA  `88-4,  and may be deemed to have sole power to vote and
                  sole power to dispose of shares of the issuer  directly  owned
                  by TVI-4,  TVIP-4,  TVIA-4 and TVIA `88-4.  Kagle,  Marquardt,
                  McMurtry,  Wilson and  Johnston  are the  general  partners of
                  TVIM-4,  and may be  deemed to have  shared  power to vote and
                  shared power to dispose of the shares of issuer directly owned
                  by TVI-4, TVIP-4, TVIA-4 and TVIA `88-4.

ITEM 2(b).        ADDRESS OF PRINCIPAL BUSINESS OFFICE, OR, IF NONE, RESIDENCE:

                  The address of the principal  office for each of the Reporting
Persons is:

                  Technology Venture Investors
                  2480 Sand Hill Road, Suite 101
                  Menlo Park, CA  94025


<PAGE>




                               Page 15 of 20 Pages

ITEM 2(c)         CITIZENSHIP:

                  TVI-3 and TVIM-3 are California limited  partnerships,  TVI-4,
                  TVIM-4,  TVIP-4,  TVIA-4 and TVIA `88-4 are  Delaware  limited
                  partnerships,  and  Kagle,  Marquardt,  McMurtry,  Wilson  and
                  Johnston are United States citizens.

ITEM 2(d).        TITLE OF CLASS OF SECURITIES:

                  Common Stock

ITEM 2(e).        CUSIP NUMBER:

                  CUSIP # 74837P108

ITEM 3.           Not Applicable


<PAGE>




                               Page 16 of 20 Pages

ITEM 4.           OWNERSHIP:

                  The following information with respect to the ownership of the
                  Common  Stock  of  the  issuer  by  the  persons  filing  this
                  Statement is provided as of December 31, 1999:

                  (a) Amount beneficially owned:

                        See Row 9 of cover page for each Reporting Person.

                  (b) Percent of Class:

                        See Row 11 of cover page for each Reporting Person.

                  (c) Number of shares as to which such person has:

                  (i)   Sole power to vote or to direct the vote:

                  See Row 5 of cover page for each Reporting Person.

                  (ii)  Shared power to vote or to direct the vote:

                  See Row 6 of cover page for each Reporting Person.

                  (iii) Sole power to  dispose or to direct the  disposition of:

                  See Row 7 of cover page for each Reporting Person.

                  (iv)  Shared power to dispose or to direct the disposition of:

                  See Row 8 of cover page for each Reporting Person.

ITEM 5.           OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS:

                  Not applicable.


<PAGE>




                               Page 17 of 20 Pages

ITEM 6.           OWNERSHIP  OF MORE THAN  FIVE  PERCENT  ON  BEHALF OF  ANOTHER
                  PERSON:

                  Under   certain   circumstances   set  forth  in  the  limited
                  partnership  agreements of TVI-3, TVI-4, TVIP-4,  TVIA-4, TVIA
                  `88-4,  TVIM-3 and TVIM-4, the general and limited partners of
                  each of such  entities  may be  deemed  to have  the  right to
                  receive  dividends  from,  or the proceeds  from,  the sale of
                  shares of the issuer  owned by each such  entity of which they
                  are a partner.

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


<PAGE>




                               Page 18 of 20 Pages

                                   SIGNATURES

                  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.

Dated:  February 7, 2000

                                      /s/ Mark G. Wilson

                                      Mark G.  Wilson,  on behalf of TVIM-3  and
                                      TVIM-4  in  his   capacity  as  a  general
                                      partner  thereof,  on behalf of TVI-3,  in
                                      his capacity as a general  partner of TVIM
                                      3, the general partner of TVI-3, on behalf
                                      of  TVI-4,  in his  capacity  as a general
                                      partner of TVIM-4,  the general partner of
                                      TVI-4,   on  behalf  of  TVIP-4,   in  his
                                      capacity  as a general  partner of TVIM-4,
                                      the general  partner of TVIP-4,  on behalf
                                      of TVIA-4,  in his  capacity  as a general
                                      partner of TVIM-4,  the general partner of
                                      TVIA-4,  and on behalf of TVIA  `88-4,  in
                                      his  capacity  as  a  general  partner  of
                                      TVIM-4, the general partner of TVIA `88-4.

/s/ Robert C. Kagle                   /s/ Mark G. Wilson
- --------------------------------      ------------------------------------------
ROBERT C. KAGLE                       MARK G. WILSON

/s/ David F. Marquardt                /s/ John R. Johnston
- --------------------------------      ------------------------------------------
DAVID F. MARQUARDT                    JOHN R. JOHNSTON

/s/ Burton J. McMurtry
- -------------------------------
BURTON J. MCMURTRY


<PAGE>




                               Page 19 of 20 Pages

                                  EXHIBIT INDEX

                                                                     Found on
                                                                   Sequentially
Exhibit                                                           Numbered Page
- -------                                                           -------------

Exhibit A:  Agreement of Joint Filing                                  20



<PAGE>




                               Page 20 of 20 Pages

                                    EXHIBIT A

                            Agreement of Joint Filing

                  The  undersigned  hereby agree that a single  Schedule 13G (or
any amendment  thereto)  relating to the Common Stock of QuickLogic  Corporation
shall be filed on behalf  of each of the  undersigned  and that  this  Agreement
shall be filed as an exhibit to such Schedule 13G.

Date:  February 7, 2000

                                      /s/ Mark G. Wilson

                                      Mark G.  Wilson,  on behalf of TVIM-3  and
                                      TVIM-4  in  his   capacity  as  a  general
                                      partner  thereof,  on behalf of TVI-3,  in
                                      his capacity as a general  partner of TVIM
                                      3, the general partner of TVI-3, on behalf
                                      of  TVI-4,  in his  capacity  as a general
                                      partner of TVIM-4,  the general partner of
                                      TVI-4,   on  behalf  of  TVIP-4,   in  his
                                      capacity  as a general  partner of TVIM-4,
                                      the general  partner of TVIP-4,  on behalf
                                      of TVIA-4,  in his  capacity  as a general
                                      partner of TVIM-4,  the general partner of
                                      TVIA-4,  and on behalf of TVIA  `88-4,  in
                                      his  capacity  as  a  general  partner  of
                                      TVIM-4, the general partner of TVIA `88-4.

/s/ Robert C. Kagle                   /s/ Mark G. Wilson
- --------------------------------      ------------------------------------------
ROBERT C. KAGLE                       MARK G. WILSON

/s/ David F. Marquardt                /s/ John R. Johnston
- --------------------------------      ------------------------------------------
DAVID F. MARQUARDT                    JOHN R. JOHNSTON

/s/ Burton J. McMurtry
- --------------------------------
BURTON J. MCMURTRY




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