EXHIBIT 10.21

COMMERCIAL LEASE AGREEMENT

Jackson
Shaw Technology Center II
Limited Partnership

to

Testchip
Technologies, Inc.

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TABLE OF CONTENTS

|1.  |  | LANDLORD                                      |  | 3 
|--- |  | --------------------------------------------- |  | --
|2.  |  | TENANT                                        |  | 3 
|3.  |  | LEASED PREMISES                               |  | 3 
|4.  |  | TERM                                          |  | 3 
|5.  |  | BASE RENT AND SECURITY DEPOSIT                |  | 4 
|6.  |  | ADDITIONAL RENTAL                             |  | 5 
|7.  |  | TENANT REPAIRS AND MAINTENANCE                |  | 7 
|8.  |  | LANDLORD'S REPAIRS                            |  | 8 
|9.  |  | UTILITY SERVICE                               |  | 8 
|10. |  | SIGNS                                         |  | 8 
|11. |  | USAGE                                         |  | 8 
|12. |  | INSURANCE                                     |  | 9 
|13. |  | RELOCATION                                    |  | 9 
|14. |  | COMPLIANCE WITH LAWS, RULES AND REGULATIONS   |  | 9 
|15. |  | ASSIGNMENT AND SUBLETTING                     |  | 9 
|16. |  | ALTERATIONS AND IMPROVEMENTS                  |  | 10
|17. |  | CONDEMNATION                                  |  | 11
|18. |  | FIRE AND CASUALTY                             |  | 12
|19. |  | CASUALTY INSURANCE                            |  | 13
|20. |  | WAIVER OF SUBROGATION                         |  | 13
|21. |  | HOLD HARMLESS                                 |  | 13
|22. |  | QUIET ENJOYMENT                               |  | 13
|23. |  | LANDLORD'S RIGHT OF ENTRY                     |  | 13
|24. |  | ASSIGNMENT OF LANDLORD'S INTEREST IN LEASE    |  | 14
|25. |  | LANDLORDS LIEN                                |  | 14
|26. |  | DEFAULT BY TENANT                             |  | 14
|27. |  | REMEDIES FOR TENANT'S DEFAULT                 |  | 14
|28. |  | TERMINATION OF OPTIONS                        |  | 15
|29. |  | WAIVER OF DEFAULT OR REMEDY                   |  | 16
|30. |  | CHOICE OF LAW; VENUE; ATTORNEY'S FEES         |  | 16
|31. |  | HOLDING OVER                                  |  | 16
|32. |  | RIGHTS OF MORTGAGEE                           |  | 17
|33. |  | ESTOPPEL CERTIFICATES                         |  | 17
|34. |  | SUCCESSORS                                    |  | 17
|35. |  | REAL ESTATE COMMISSION                        |  | 18
|36. |  | DEFAULT BY LANDLORD                           |  | 18
|37. |  | MECHANIC'S LIENS                              |  | 18
|38. |  | HAZARDOUS WASTE                               |  | 18
|39. |  | ENTIRE AGREEMENT AND LIMITATION OF WARRANTIES |  | 19
|40. |  | FINANCIAL STATEMENTS                          |  | 19
|41. |  | FORCE MAJEURE                                 |  | 19
|42. |  | MISCELLANEOUS                                 |  | 20
|43. |  | NOTICE                                        |  | 21
|44. |  | LIMITATION ON TENANT'S DAMAGES                |  | 21

EXHIBITS:

Exhibit ALegal
Description
Exhibit BTenant Improvements
Exhibit CSign Criteria
Exhibit DRules & Regulations
Exhibit ERenewal Option
Exhibit FExpansion Right of First Refusal

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COMMERCIAL LEASE AGREEMENT

THIS LEASE AGREEMENT is entered into by and between:

1.LANDLORD:Jackson-Shaw Technology Center II Limited
Partnership

2.TENANT:TestChip Technologies, Inc.

3.LEASED PREMISES:In consideration of the rents, terms and covenants of this Commercial Lease Agreement (this
"Lease"), Landlord hereby leases to Tenant certain premises (the "Leased Premises") consisting of approximately18,302square feet within the 83,286
square foot building (the "Building") located at2600 Technology Drive, Suite 600, Plano, Texas, 75074, together with the non-exclusive
light to use, in common with other tenants, the common areas of the Project, which are all areas neither exclusively leased to another tenant nor expressly reserved to or by Landlord. The land upon
which the Building is located is described in the attached Exhibit A and, together with the Building, landscaping, parking and driveway areas, sidewalks, and other improvements thereon, shall
be referred to in this Lease as the "Project."

4.TERM:

(a)  The
term of this Lease shall be66months commencing onAugust 1,
2000, the "Commencement Date" and terminating on the last day of the 66th month following the Commencement Date (the "Termination Date"). This Commencement Date may be subject
to change, however, pursuant to Paragraph 4(c) below.

(b)  Tenant
acknowledges that it accepts the Leased Premises as suitable for Tenant's purposes subject only to Paragraph 4(c) below, if applicable. If this Lease is
executed before the Leased Premises become available for occupancy, or if Landlord cannot acquire possession of the Leased Premises prior to the Commencement Date stated above, Tenant agrees to accept
possession of the Leased Premises at such time as Landlord is able to tender the same, which date shall then be the Commencement Date of the Lease term.

(c)  Landlord
agrees to install at its cost and expense the improvements, if any, described in the plans and specifications described in Exhibit B. If such
improvements are not completed and the Leased Premises are not ready for occupancy on the Commencement Date stated above, other than as a result of the omission, delay or default by Tenant or anyone
acting under or on behalf of Tenant, the rent under this Lease shall not commence until substantial completion of the work described in said plans and specifications, and the Commencement Date of the
Lease term shall be the date of such substantial completion and Tenant secures Certificate of Occupancy. Landlord shall notify Tenant in writing as soon as such improvements are substantially
completed and ready for occupancy. If Tenant believes that such improvements have not been substantially completed as aforesaid, Tenant shall notify Landlord in writing of its objections within three
(3) days after receipt of the completion notice from Landlord. Landlord shall have a reasonable time after receipt of such notice (but in no event more than 10 days) in which to commence
such corrective action as may be necessary and shall notify Tenant in writing as soon as it deems such corrective action has been completed so that the Leased Premises are completed and ready for
occupancy. In the event of any dispute as to substantial completion or work performed or required to be performed by Landlord, the certificate of a registered architect shall be conclusive and binding
on all parties.

(d)  Tenant
acknowledges that no representations or promises regarding construction, repairs, alterations, remodeling, or improvements to the Leased Premises have been made
by Landlord, its agents, employees, or other representatives, unless such are expressly set forth in this Lease or any Exhibit hereto. Tenant is solely responsible for applying for and obtaining a
Certificate of Occupancy for the Leased Premises and will satisfy itself as to the business park restrictions and all zoning and similar restrictions and regulations prior to commencement of any
construction. Failure of Tenant to provide written notice of such objections prior to commencement of construction shall be deemed

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acceptance by Tenant. Tenant agrees that if its occupancy of the Leased Premises is delayed under the circumstances described in Paragraphs 4(b) and (c) above, this Lease shall nonetheless
continue in full force and effect. Adjustment of the rent commencement date as above provided shall constitute full settlement of all claims by Tenant against Landlord by reason of any such delay in
possession of the Leased Premises. Tenant's taking possession of the Leased Premises shall conclusively establish that the improvements, if any, to be made by Landlord under the terms of this Lease
have been completed in accordance with the plans and specifications therefor and that the Leased Premises are in good and satisfactory condition as of the date of Tenant's possession, unless Tenant
notifies Landlord in writing specifying any bona fide deficiencies after taking possession. Landlord shall use reasonable diligence to repair promptly such items but Tenant shall have no claim for
damages or rebate or abatement of rent by reason thereof. In conjunction with, or at any time after, the Commencement Date, Tenant shall, upon demand, execute and deliver to Landlord an Estoppel
letter (as referred to in paragraph 33 herein) to acknowledge the Commencement Date.

5.BASE RENT AND SECURITY DEPOSIT:

(a)  Tenant
agrees to pay to Landlord the following rental amounts (sometimes referred to in this Lease as the "Base Rent" or "Base Rental"):months 1
and 4 through 6, $155,568.00 per year payable in monthly installments of $12,964.00 each, Months 7-66, $205,908.00 per year payable in monthly installments of $17,159.00 each. Landlord
agrees to waive months 2 and 3 of the primary Lease Term.Payment of rent is subject to proration for partial months and to adjustment for early or delayed
occupancy under the terms hereof, and, if the area of the Leased Premises is, on the Commencement Date, different than the area stated in Paragraph 3 above, then Base Rent shall be adjusted to
reflectthe then applicableper square foot rate. On the commencement date of the Lease Agreement the first month's Base Rent shall be payable. All
subsequent payments shall be made to Landlord monthly, in advance, without demand, deduction or offset, in lawful money of the United States of America at the address stated below. All installments of
Base Rent shall be due and payable on or before the first (1st) day of each month during the Lease term.

(b)  Upon
the date Tenant executes the Lease Agreement, there shall be due and payable by Tenant a Security Deposit in the amount of $17,159.00. Such deposit shall be held by Landlord (without any obligation to
pay interest thereon or segregate such money from Landlord's general funds
except as may be required by applicable law) as security for the performance of Tenant's obligations under this Lease. Tenant agrees to increase such Security Deposit from time to time so that it is
at all times equal to one monthly Base Rental installment plus the average monthly additional rentals arising pursuant to Paragraph 6 below.

Tenant
shall deposit cash with Landlord in an amount sufficient so to increase the Security Deposit to such amount within five (5) days after written demand by Landlord. It is
expressly understood that the Security Deposit is not an advance payment of rental or a measure of Landlord's damages in the event of Tenant's default under this Lease. Upon the occurrence of any
event of default by Tenant under this Lease, Landlord may, from time to time, without prejudice to any other remedy provided herein or provided by law, use, apply, or retain all or part of the
Security Deposit for the payment of (i) any Base Rent, (ii) additional rentals arising under Paragraph 6 below, and (iii) other sums due hereunder, including without
limitation any amount which Landlord may spend or become obligated to spend by reason of Tenant's default or to compensate Landlord for any damage, injury, expense or liability caused to Landlord by
such default or breach (all of which items (i), (ii) and (iii) are sometimes referred to in the aggregate as "Rent"). If any portion of the Security Deposit is so used or applied, Tenant
shall, within five (5) days after written demand thereof, deposit cash with Landlord in an amount sufficient to restore the Security Deposit to the amount required by this Paragraph. Tenant's
failure to do so shall be an event of default under this Lease. The balance of the Security Deposit shall be returned by Landlord to Tenant at such time after termination of this Lease that all of
Tenant's obligations have been fulfilled.

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(c)  Other
remedies for nonpayment of Rent notwithstanding, if the monthly Base Rental payment is not received by Landlord on or before the tenth (10th) day of the month for
which such rent is due, or if any other Rent payment due Landlord by Tenant hereunder is not received by Landlord within ten (10) days of the due date, a service charge of two hundred ($200.00)
dollars shall be additionally due and payable by Tenant as an administrative charge for the excess efforts necessitated by such tardiness in payment. Such service charge shall be cumulative of any
other remedies Landlord may have for nonpayment of Rent and other sums payable under this Lease.

(d)  If
three (3) consecutive monthly Base Rental payments or any ten (10) [in total, cumulative from the beginning of the Lease term]
monthly Base Rental payments during the Lease term (or any renewal or extension thereof) are not received by Landlord within ten (10) days of the due date, the Base Rent hereunder shall
automatically become due and payable by Tenant in advance in quarterly installments equal to three (3) months' Base Rent each. The first of such quarterly Base Rent payments shall be due and
payable on the first day of the next succeeding month and on the first day of every third (3rd) month thereafter. This remedy shall be cumulative of any other remedies of Landlord under this Lease for
nonpayment of Rent.

6.ADDITIONAL RENTAL:

(a)Taxes and Insurance:



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(b)Common Area Maintenance:



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(c)  In
any event, Tenant shall be responsible for insuring and paying all taxes upon Tenant's furniture, machinery, goods, supplies, fixtures, Alterations (below defined) or
other improvements, and other property on the Project.

7.TENANT REPAIRS AND MAINTENANCE:

(a)  Tenant
shall maintain all parts of the Leased Premises and their appurtenances (except those for which Landlord is expressly responsible under this Lease) in good, clean
and sanitary condition, at its own expense. Tenant shall promptly make all necessary repairs and replacements to the Leased Premises, including but not limited to electric light lamps or tubes,
windows, glass and plate glass, interior and exterior doors, any special office entry, interior walls and finish work, floors and floor coverings, downspouts, gutters, heating and air conditioning
systems,, dock boards, truck doors, dock bumpers, and plumbing work and fixtures. Replacement and repair parts, materials and equipment shall be of quality equivalent to those initially installed
within the Leased Premises, and repair and maintenance work shall be done in a good and workmanlike manner and in accordance with existing laws, rules, regulations and ordinances.

(b)  Tenant
shall not damage or disturb the integrity, structural integrity, or support of any wall, roof, or foundation of the Building. Any damage to these areas caused by
Tenant or Tenant's Representatives (defined in Paragraph 7(g)) shall be promptly repaired by Tenant at its sole cost and expense.

(c)  Intentionally
Deleted

(d)  Tenant
shall, at its own cost and expense, enter into a regularly scheduled preventive maintenance service contract with a maintenance contractor for servicing all
heating, ventilation and air conditioning systems and equipment within, and any other equipment or machinery installed by Landlord in, or to serve, the Leased Premises. The maintenance contractor and
the contract are subject to Landlord approval which shall not be unreasonably withheld. The service contract must include all services suggested by the equipment manufacturer within the
operation/maintenance manual and must become effective (and a copy delivered to Landlord) within thirty (30) days of the date Tenant takes possession of the Leased Premises. If Tenant fails to
enter into such service contract as required, Landlord shall have the right to do so on Tenant's behalf, and Tenant agrees to pay Landlord the direct cost and direct expense of same upon demand, and
such amount shall be considered additional Rent.

(e)  Tenant
shall at its own expense keep the Leased Premises pest-free and pay all charges for pest control and extermination within the Leased Premises.

(f)    At
the termination of this Lease, Tenant shall deliver the Leased Premises "broom clean" to Landlord in the same good order and condition as existed at the Commencement
Date of this Lease, ordinary wear, natural deterioration beyond the control of Tenant, and damage by fire, tornado or other casualty excepted. Tenant shall give written notice to Landlord at least
thirty (30) days prior to vacating the Leased Premises and shall arrange to meet with Landlord for a joint inspection of the Leased Premises prior to vacating. In the event of Tenant's failure
to give such notice or arrange such joint inspection, Landlord's inspection at or after Tenant's vacating the Leased Premises shall be conclusively deemed correct for purposes of determining Tenant's
responsibility for repairs and restoration.

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(g)  Not
in limitation on the foregoing, it is expressly understood that Tenant shall repair and pay for all damage caused by the negligence of Tenant, Tenant's employees,
officers, directors, partners, agents, invitees, licensees, contractors, representatives, or others for whom Tenant is legally responsible (all such persons and entities being herein collectively
referred to as "Tenant's Representatives") or caused by Tenant's default hereunder.

(h)  If
Landlord shall give Tenant written notice of defects or need for repairs for which Tenant is responsible under this Lease, and if Tenant shall fall to make same
within 30 days of Landlord's written
notification or such shorter time as reasonable if expedited repair is needed to avoid injury or damage, Landlord shall have the option to cure said defect or repair, and Tenant shall pay to Landlord
all costs and expenses incurred on demand.

8.LANDLORD'S REPAIRS:

(a)  Landlord
shall be responsible, at its expense, for, but only for, the structural integrity of the roof, foundation and exterior walls of the Building. In further
limitation on Landlord's responsibilities hereunder, (i) any repair to the roof, foundation or exterior walls occasioned by the act of omission of Tenant or Tenant's Representatives shall be
the responsibility of Tenant; (ii) the term "walls" as used in this Paragraph 8 shall not include windows, glass or plate glass, interior doors, special store fronts, office entries or
exterior doors; and (iii) Landlord's liability with respect to any defects, repairs or maintenance for which Landlord is responsible at its expense under this Lease shall be limited to the cost
of such repairs or maintenance or the curing of such defect. Tenant shall promptly give Landlord written notice of defects or need for repairs, after which Landlord shall have 30 days to
commence to repair or cure such defect.

(b)  Landlord
shall perform the work which gives rise to Common Area Maintenance Expenses, subject to payment therefor by Tenant pursuant to the provisions of
Paragraph 6(b) above. If the need for any such work shall come to the attention of Tenant, Tenant will promptly so notify Landlord in writing.

9.UTILITY SERVICE:Tenant shall pay the cost of all utility services including, but not limited to, initial
connection charges and deposits and all charges for gas, water, trash disposal, sewer, telephone or other telecommunications, and electricity used on the Leased Premises. Tenant shall pay all costs
caused by Tenant introducing excessive pollutants into the sanitary or storm sewer system, including permits, fees, assessments, and charges levied by any governmental subdivision for any pollutants
or solids other than ordinary human waste.

10.SIGNS:No sign, door plaques, advertisement, or notice shall be displayed,. painted or affixed by Tenant on
any part of the Project, Building, parking facilities, or Leased Premises without prior written consent of Landlord, not to be unreasonably withheld. The color, size, character, style, material,
placement and location and method of attachment to the Building shall be subject to Landlord's approval, and to any applicable governmental laws, ordinances, regulations, project specifications, and
other requirements. Signs, if approved by Landlord, shall be placed by a contractor approved by Landlord and paid for by Tenant. Tenant shall remove all such signs at the termination of this Lease.
Such installations and removals shall be made in such manner as to avoid injury or defacement of the Project and other improvements, and Tenant, at its sole expense, shall repair any injury or
defacement, including, without limitation, any discoloration caused by such installation and/or removal. Landlord may erect a sign or signs on the Leased Premises indicating that the Leased Premises
are for lease during the six (6) month period prior to the expiration of this Lease.

11.USAGE:Tenant warrants and represents to Landlord that the Leased Premises shall be used and occupied only
for the purpose of:general office. Any change in the stated usage purposes shall be
subject to the prior written approval of Landlord not to be unreasonably withheld. Tenant shall occupy the Leased Premises, conduct its business, and control Tenant's Representatives in a lawful and
reputable way and as not to create any nuisance. Tenant shall not commit, or allow to be committed,

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any waste on the Leased Premises or the Project. Tenant may not use the Leased Premises for the use, storage, or distribution of hazardous or environmentally offensive substances, for underground
storage, or for any unlawful purposes.

12.INSURANCE:

(a)  Tenant
shall not permit the Leased Premises to be used in any way which would be hazardous or which would in any way increase the cost of or render void any insurance on
the improvements, and Tenant shall immediately, on demand, cease any use which violates the foregoing or to which Landlord's insurer or any governmental or regulatory authority objects. If at any time
during the term of this Lease Tenant's use or vacancy shall cause an increase in premiums, and in particular, but without limitation, if the State Board of Insurance or other insurance authority
disallows any of Landlord's sprinkler credits or imposes an additional penalty or surcharge in Landlord's insurance premiums because of Tenant's original or subsequent placement or use of storage
racks or bins or method of storage or because of the nature of Tenant's inventory or any other act of Tenant, Tenant agrees to pay as additional Rent the increase in Landlord's insurance premiums.

(b)  Tenant,
at its sole cost and expense, shall procure and maintain throughout the term of this Lease a policy or policies of insurance insuring Landlord, Landlord's
management company and lender, and Tenant against all claims for property damages, personal injury or death of others occurring on or in connection with: (i) the Leased Premises;
(ii) the condition of the Leased Premises; (iii) Tenant's operations in and maintenance and use of the Leased Premises; (iv) Tenant's and Tenant's Representatives' use of the
common areas of the Project, and (v) Tenant's liability assumed under this Lease. The limits of such policy or policies shall be not less than $1,000,000.00combined single limit coverage per
occurrence for injury to persons (including death) and/or property damage or destruction, including
loss of use.

(c)  All
such policies shall be procured by Tenant from insurance companies satisfactory to Landlord naming the following as co-insureds: (i) Landlord;
(ii) Landlord's management company,Jackson-Shaw Company; and, (iii) Landlord's mortgage holder, if any. Certified copies of
such policies together with receipt for payment of premiums, shall be delivered to Landlord prior to the Commencement Date of this Lease. Not less than fifteen (15) days prior to the expiration
date of any such policies, certified copies of renewal policies and evidence of the payment of renewal premiums shall be delivered to Landlord. All such original and renewal policies shall provide for
at least thirty (30) days written notice to Landlord before such policy may be canceled or changed to reduce insurance coverage provided thereby. Upon request of Landlord, Tenant further agrees
to complete and return to Landlord an insurance questionnaire (such form to be provided by Landlord) regarding Tenant's insurance coverage and intended use of the Leased Premises. Tenant warrants and
represents that all information contained in such questionnaire shall be true and correct as of the date thereof and shall be updated by Tenant from time to time upon Landlord's request.

13.Intentionally Deleted

14.COMPLIANCE WITH LAWS, RULES AND REGULATIONS:Tenant shall comply with all applicable laws, ordinances,
orders, rules and regulations of state, federal, municipal, or other agencies or bodies relating to, the use, condition and occupancy of and business conducted on the Leased Premises, including
without limitation, the Americans with Disabilities Act, the Resource Conservation and Recovery Act, the Comprehensive Environmental Response Act, and the rules, regulations and directives of the U.S.
Environmental Protection Agency.

15.ASSIGNMENT AND SUBLETTING:The Tenant agrees not to assign, transfer, or mortgage this Lease or any right or
interest therein or sublet the Leased Premises or any part thereof, without the prior written consent of Landlord such consent not to be unreasonably withheld. No assignment or subletting shall
relieve Tenant of its obligations hereunder, and Tenant shall continue to be liable as a principal (and not as a guarantor or surety) to the same extent as though no assignment or subletting

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had been made. Consent by Landlord to any one assignment or subletting shall not be construed to be consent to any additional assignment or subletting. Each such successive act shall require similar
consent of Landlord. Landlord shall be reimbursed by Tenant for any costs or expenses incurred as a result of Tenant's request for consent to any such assignment or subletting, including legal costs
not to exceed $800.00. In the event Tenant subleases the Leased Premises, or any portion thereof, or assigns this Lease with the consent of the Landlord at an annual Base Rental exceeding that stated
herein, such excess shall be paid by Tenant to Landlord as additional Rent hereunder within ten (10) days after receipt by Tenant. Upon the occurrence of an "event of default" as defined below,
if all or any part of the Leased Premises is then assigned or sublet, Landlord may, in addition to any other remedies provided by this Lease or provided by law, collect directly from the assignee or
subtenant all rents due to Tenant. Landlord shall have a security interest in all property on the Leased Premises to secure payment of such sums. Any collection directly by Landlord from the assignee
or subtenant shall not be construed, however, to constitute a novation or a release of Tenant from the further performance of its obligations under the Lease. Notwithstanding the foregoing, it is
expressly agreed that if this Lease is assigned to any person or entity pursuant to the provisions of the Bankruptcy Code, 11 U.S.C. Sec. 101, et. seq., as amended (the "Bankruptcy Code"), any and all
monies or other considerations payable or otherwise to be delivered in connection with such assignment shall be paid or delivered to Lessor, shall be and remain the exclusive property of Landlord and
shall not constitute property of Tenant or of the estate of Tenant within the meaning of the Bankruptcy Code. Any and all monies or other considerations constituting Landlord's Property under the
preceding sentence not paid or delivered to Landlord shall be held in trust for the benefit of Landlord and be promptly paid or delivered to Landlord. Any person or entity to which this Lease is
assigned pursuant to the provisions of the Bankruptcy Code shall be deemed without further act or deed to have assumed all of the obligations arising under this Lease on and after the date of such
assignment. Any such assignee shall upon demand execute and deliver to Landlord an instrument confirming such assumption.

16.ALTERNATIONS AND IMPROVEMENTS:

(a)  Tenant
shall not make or perform, or permit the making or performance of, any initial or subsequent tenant finish work or any alterations, installations, decorations,
improvements, additions or other physical changes in or about the Leased Premises that are structural in nature or exceed $5000.00 in costs (referred to collectively as "Alterations") without
Landlord's prior consent, such consent not to be unreasonably withheld. Landlord shall be under no obligation to allow Alterations of any kind and may withhold its consent without cause.
Notwithstanding the foregoing provisions or Landlord's consent to any Alterations, all Alternations shall be made and performed in conformity with and subject to the following provisions: All
Alternations shall be made and performed at Tenant's sole cost and expense in a good and workmanlike manner. Alternations shall be made only by contractors or mechanics approved by Landlord, such
approval not to be unreasonably withheld. Tenant shall submit to Landlord detailed plans and specifications (including architectural layout, mechanical and structural drawings) for each proposed
Alteration and shall not commence any such Alteration without first obtaining Landlord's written approval of such plans and specifications. Prior to the commencement of each proposed Alteration,
Tenant shall furnish to Landlord a certificate evidencing worker's compensation insurance coverage for all persons to be employed in connection with such Alterations, including those to be employed by
all contractors and subcontractors, and of comprehensive public liability insurance (including property damage coverage) in which Landlord, its agents, and any lessor under any ground or underlying
lease, and any mortgagee of the Building shall be named as parties insured, which policies shall be issued by companies and shall be in form and amounts satisfactory to Landlord and shall be
maintained by Tenant until the completion of such Alteration. Tenant shall cause its contractor and each subcontractor to provide Landlord with a Certificate of Completion of the Alterations and a
Bills Paid Affidavit and full Lien Waiver. Tenant shall, if required by Landlord at the time of Landlord's consent to the Alterations, agree to restore the Leased Premises at the termination of this
Lease to their condition prior to making such Alterations. All permits, approvals and certificates

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required by all governmental authorities shall be timely obtained by Tenant and submitted to Landlord. Notwithstanding Landlord's approval of plans and specifications for any Alterations, all
Alterations shall be made and performed in full compliance with all applicable laws, orders, rules, standards and regulations of Federal, State, County, and Municipal authorities, including, without
limitation, all directions, pursuant to law, of all public officers, and with all applicable rules, orders, regulations and requirements of the local Board of Fire Underwriters or any similar body
("Applicable Laws"). Landlord's approval shall not in any way be considered an indication that the plans and specifications comply with Applicable Laws. All materials and equipment to be incorporated
in the Leased Premises as a result of all Alterations shall be new and first quality. No such materials or equipment shall be subject to any lien, encumbrance, chattel mortgage or title retention or
security agreement. Whether such Alterations are being performed by Tenant in connection with Tenant's initial occupancy of the Leased Premises or subsequently, Tenant agrees to make proper
application for, and obtain, a Building Permit and a Certificate of Occupancy from the city in which the Leased Premises are located. Tenant shall furnish copies of such permit and certificate to
Landlord promptly after issuance of same.

(b)  All
appurtenances, fixtures, improvements, and other property attached to or installed in the Leased Premises, whether by Landlord or Tenant or others, and whether at
Landlord's expense or Tenant's expense, or the joint expense of Landlord and Tenant, shall be and remain the property of Landlord, except that any such fixtures, improvements, additions, and other
property which have been installed at the sole expense of Tenant and which are removable without material damage to the Leased Premises shall be and remain the property of Tenant. If no event of
default has occurred, Tenant may, and if Landlord so elects Tenant shall, remove any property belonging to Tenant at the end of the term hereof, and Tenant shall repair or, at Landlord's option, shall
pay to Landlord the cost of repairing any damage arising from such removal. Any replacements of any property of Landlord, whether made at Tenant's expense or otherwise, shall be and remain the
property of Landlord.

17.CONDEMNATION:

(a)  If,
during the term (or extension or renewal) of this Lease, all or a. substantial part of the Leased Premises are taken for any public or quasi-public use under any
governmental law, ordinance or regulation, or by right of eminent domain or by private purchase in lieu thereof, and the taking would prevent or materially interfere with the then current use of the
Leased Premises, this Lease shall terminate and the Rent shall be prorated during the unexpired portion of this Lease effective on the date physical possession is taken by the condemning authority.

(b)  If
a portion of the Leased Premises is taken and this Lease is not terminated as provided in Paragraph 17(a) above, if condemnation proceeds are sufficient and if
restoration is feasible, Landlord may, at its option restore the Project (other than Alterations) in order to make it reasonably tenantable and suitable for Tenant's approved use. During such
restoration, Rent shall be reduced by the amount of business or rent interruption insurance proceeds actually received by Landlord. Upon completion of such restoration, the Rent payable under this
Lease during the unexpired portion of the term shall be adjusted to such an extent as may be fair and reasonable under the circumstances.

(c)  In
the event of such taking or private purchase in lieu thereof, Tenant may seek a separate award for any loss of improvements made or paid for by Tenant, its personal
property, and its moving expenses (so long as no such claim diminishes Landlord's claim or award), but all other claims of any nature shall belong to Landlord. In the event Tenant does not receive
such a separate award, Landlord shall be entitled to receive any and all sums awarded for the taking.

(d)  Notwithstanding
anything herein to the contrary, if the holder of any indebtedness secured by a mortgage or deed of trust covering the Building and/or Project requires
that the condemnation proceeds be applied to such indebtedness, then Landlord shall have the right to terminate this Lease by delivering written notice of termination to Tenant within fifteen
(15) days after such requirement is imposed. All rights and obligations under this Lease shall then cease. If Landlord does not receive

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condemnation proceeds sufficient for restoration (such as when its mortgagee does not allow the proceeds to be used for such purposes) and if restoration is economically reasonably feasible, Tenant
will have the option of supplementing available proceeds to allow restoration, and Tenant's actual costs will be reimbursed through a monthly prorata credit against rent beginning after Landlord's
mortgage has been paid in full.

18.FIRE AND CASUALTY:

(a)  If
the Building should be damaged or destroyed by fire, tornado, or other casualty, Tenant shall give immediate verbal and written notice thereof to Landlord.

(b)  If
the Building should be totally destroyed by fire, tornado, or other casualty, or if it should be so damaged thereby that rebuilding or repairs cannot reasonably be
completed within one hundred eighty (180) days after the date on which Landlord is notified by Tenant of such damage, at the option of either Landlord or Tenant, this Lease shall terminate, and
the Rent shall be abated during the unexpired portion of this Lease effective upon the date of occurrence of such damage.

(c)  If
the Building should be damaged by any peril that will be wholly compensated (subject to deductibles) by the insurance maintained by Landlord or if Landlord, in its
sole discretion, so chooses notwithstanding a deficiency in such proceeds, and if rebuilding or repairs can reasonably be completed within one hundred eighty (180) days after the date on which
Landlord is notified by Tenant of such damage, this Lease shall not terminate, and Landlord shall then proceed with reasonable diligence to rebuild and repair the Building to substantially the same
condition in which it existed prior to such damage. Landlord shall not be required, however, to rebuild, repair, or replace Tenant's furniture, fixtures, Alterations, inventory or other personal
property. If the Leased Premises are untenantable in whole or in part during restoration, the Rent payable hereunder during the period in which they are untenantable shall be reduced by untenantable
portion in both Tenant and Landlords reasonable discretion. If Landlord should fall to complete such repairs and rebuilding within one hundred eighty (180) days after the date on which Landlord
is notified by Tenant of such damage, Tenant may terminate this Lease by delivering written notice of termination to Landlord. Such termination shall be Tenant's exclusive remedy and all rights and
obligations of the parties under the Lease shall then cease. Notwithstanding the foregoing provisions of this Paragraph 18(c), Tenant agrees that if the Leased Premises, the Building and/or
Project are damaged by fire or other casualty caused by the fault or negligence of Tenant or Tenant's Representatives, Tenant shall have no option to terminate this Lease even if the damage cannot be
repaired within one hundred eighty (180) days, and the Rent shall not be abated or reduced before or during the repair period.

(d)  Notwithstanding
anything herein to the contrary, if the holder of any indebtedness secured by a mortgage or deed of trust covering the Building and/or Project requires
that the insurance proceeds be applied to such indebtedness, then Landlord shall have the right to terminate this Lease by delivering written notice of termination to Tenant within fifteen
(15) days after such requirement is imposed. All rights and obligations under this Lease shall then cease. If Landlord does not receive insurance proceeds sufficient for restoration (such as
when its mortgagee does not allow the proceeds to be used for such purposes) and if restoration is economically reasonably feasible, Tenant will have the option of supplementing available proceeds to
allow restoration, and Tenant's actual costs will be reimbursed through a monthly prorata credit against rent beginning after Landlord's mortgage has been paid in full.

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19.CASUALTY INSURANCE:Landlord shall at all times during the term of this Lease maintain a policy or
policies
of business or rental interruption insurance and a policy or policies of insurance insuring the Building against eighty percent (80%) of full replacement cost for loss or damage by fire, explosion,
and other customary hazards. Such policies will not insure any personal. property (including, but not limited to any furniture, machinery, goods, or supplies) of Tenant or which Tenant may have in the
Leased Premises or any fixtures installed by or paid for by Tenant upon or within the Leased Premises or any Alterations or other improvements which Tenant may construct or install on the Leased
Premises or any signs identifying Tenant's business located on the exterior of the Building, insurance for all of which shall be Tenant's responsibility.

20.WAIVER OF SUBROGATION:To the extent that Landlord or Tenant receives casualty insurance proceeds, such
recipient hereby waives and releases any and all rights, claims, demands and causes of action such recipient may have against the other on account of any loss or damage occasioned to such recipient or
its businesses, real and personal properties, the Leased Premises, the Building, the Project, or its contents, arising from any risk or peril covered by any insurance policy carried by either party
and for which such proceeds are actually received. Inasmuch as the above mutual waivers will preclude the assignment of any such claim by way of subrogation (or otherwise) to an insurance company (or
any other person), each party hereto agrees immediately to give to its respective insurance companies written notice of the terms of such mutual waivers and to have their respective insurance policies
properly endorsed, if necessary, to prevent the invalidation of such insurance coverages by reason of such waivers. This. provision shall be cumulative of Paragraph 21 below.

21.HOLD HARMLESS:Landlord shall not be liable to Tenant, Tenant's Representatives, or any other person for any
injury to person or damage to property on or about the Leased Premises or the Project caused by the negligence or misconduct of Tenant, Tenant's Representatives, or any other persons entering upon the
Leased Premises or the Project. Tenant agrees to indemnify and hold Landlord harmless from any and all loss, attorney's fees, expenses, or claims arising out of any such damage, loss or injury. Tenant
shall not be liable to Landlord, Landlord's employees, agents, invitees, licensees or visitors for any injury to person or damage to property on or about the Leased Premises or the Project caused by
the negligence or misconduct of Landlord, its agents, employees, agents, invitees, licensees or visitors. Landlord agrees to indemnify and hold Tenant harmless from any and all loss, attorney's fees,
expenses, or claims arising out of any such damage, loss or injury.

22.QUIET ENJOYMENT:Landlord warrants that it has full right to execute and to perform this Lease and to grant
the estate demised herein and that Tenant, upon payment of the required Rent and performance of the covenants and agreements contained in this Lease, shall peaceably and quietly have, hold, and enjoy
the Leased Premises during the full term of this Lease, including any extensions or renewals thereof.

23.LANDLORD'S RIGHT OF ENTRY:Landlord shall have the night to enter the Leased Premises for the following
reasons: inspection, cleaning or making repairs, making such alterations or additions as Landlord may deem necessary or desirable; installation of utility lines servicing the Leased Premises or any
other space in the Building, determining Tenant's use of the Leased Premises, or for determining if any event of default under this Lease has occurred. Landlord shall attempt to give
twenty-four (24) hours verbal notice to Tenant prior to such entry, except in cases of emergency or when an event of default has occurred in which cases Landlord may enter the
Leased Premises at any time and without prior notice. During the period that is six (6) months prior to the end of the Lease term, Landlord and Landlord's agents and representatives shall have
the right to enter the Leased Premises at any reasonable time during business hours, with reasonable notice, for the purpose of showing the Leased Premises and shall have the right to erect on the
Leased Premises a suitable sign indicating the Leased Premises are available for lease.

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24.ASSIGNMENT OF LANDLORD'S INTEREST IN LEASE:Landlord shall have the right to transfer and assign, in whole
or in part, its rights and obligations with respect to the Project, the Leased Premises, and this Lease, including Tenant's Security Deposit. Upon and after such transfer, Landlord shall be released
from any further obligation under this Lease and Tenant agrees to look solely to Landlord's successor for the performance of such obligations.

25.Intentionally Deleted

26.DEFAULT BY TENANT:The following shall be events of default by Tenant tinder this Lease:



27.REMEDIES FOR TENANT'S DEFAULT:Upon the occurrence of any event of default, Landlord shall have the option
to pursue any one or more of the following remedies without any prior notice or demand:



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28.TERMINATION OF OPTIONS:If there exist any options or special rights which Landlord may have granted Tenant
under this Lease including, but not limited to, options or rights regarding extensions of the term, expansion of the Leased Premises, or acquisition of any other interesting the Leased Premises, the
Building, or the Project, then all such options and rights independent of the leasehold estate hereby granted to Tenant by Landlord. Landlord and Tenant agree and acknowledge that the negotiated
consideration for any such options or special rights is Tenant's entry into this Lease and that no portion of any sums due and payable by Tenant to Landlord hereunder is attributable thereto. In
addition to, and not in lieu of, the above remedies of Landlord for Tenant's default, any and

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all such options or special rights shall be automatically terminated upon the occurrence of the following events:



29.WAIVER OF DEFAULT OR REMEDY:Failure of Landlord to declare a default immediately upon its occurrence, or
delay in taking any action in connection with an event of default, shall not be a waiver of the default. Landlord shall have the right to declare the default at any time and take such action as its
lawful or authorized under this Lease. Pursuit of any one or more of the remedies set forth in Paragraphs 27 or 28 above shall not preclude pursuit of any one or more of the other remedies provided
therein or elsewhere in this Lease or as provided by law, nor shall pursuit of any remedy be a forfeiture or waiver of any Rent or damages accruing to Landlord by reason of the violation of any of the
terms of this Lease. Failure by Landlord to enforce one or more of its remedies upon an event of default shall not be construed as a waiver of the default or of any other violation or breach of any of
the terms contained in this Lease.

30.CHOICE OF LAW; VENUE; ATTORNEY'S FEES:It is specifically stipulated that this Lease shall be interpreted
and construed according to the laws of the State in which the Leased Premises are located, and any suit brought on this Lease shall be maintained in the county in which the Leased Premises are
located. Further, the prevailing party in any such litigation between the parties shall be entitled to recover, as a part of its judgment, reasonable attorney's fees and costs and expenses incurred
therein.

31.HOLDING OVER:Tenant will, at the termination of this Lease by lapse of time or otherwise, surrender
immediate possession to Landlord. If Landlord agrees in writing that Tenant may hold over after the expiration or termination of this Lease and if the parties do not otherwise agree, the hold over
tenancy shall be subject to termination by Landlord at any time upon not less than five (5) days advance written notice, or by Tenant at any time upon not less than thirty (30) days
advance written notice. Further, all of the terms and provisions of this Lease shall be applicable during the hold over period, except that Tenant shall pay Landlord from time to time upon demand, as
Base Rent for the
period of any hold over, an amount equal to 125% of the Base Rent in effect on the date of termination, computed on a daily basis for each day of the hold over period, plus all additional Rent and
other sums due hereunder. If Tenant shall fail immediately to surrender possession of the Leased Premises to Landlord upon termination of this Lease, by lapse of time or otherwise, and Landlord has
not agreed to such continued possession, as above provided, then, until Landlord can dispossess Tenant under the terms hereof or otherwise, Tenant shall pay Landlord from time to time upon demand, as
Base Rent for the period of any such hold over, an amount equal to twice the Base Rent in effect on the date of termination, computed on a daily basis for each day of the hold over period, plus all
additional Rent and other sums due hereunder. No holding over by Tenant, whether with or without consent of Landlord, shall operate to extend this Lease except as otherwise expressly agreed by the
parties. The preceding provisions of this Paragraph shall not be construed as Landlord's consent for Tenant to hold over.

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32.RIGHTS OF MORTGAGEE:Tenant accepts this Lease subject and subordinate to any recorded mortgage, deed of
trust or other lien (a "Mortgage") presently existing or hereafter to exist with respect to the Leased Premises. Further, but without limiting the preceding sentence, Landlord is hereby irrevocably
vested with full power and authority to subordinate and/or to evidence such subordination of Tenant's interest under this Lease to any Mortgage hereafter placed on the Leased Premises, and Tenant
agrees upon demand to execute such additional instruments subordinating this Lease, and further defining the terms of such subordination, as well as the attornment discussed below, as Landlord or the
holder of any such Mortgage, may require. Tenant agrees to provide to the holder of any such Mortgage, whose name and address have been provided to Tenant (a "Mortgagee"), a copy of each notice to
Landlord which alleges any act, omission, or condition that might constitute a default by Landlord hereunder and Mortgagee, in its sole discretion, shall have all rights of Landlord hereunder to cure
any such default. If the interests of Landlord under this Lease shall be transferred by reason of foreclosure or other proceedings for enforcement of any Mortgage on the Leased Premises, at the
election of the transferee (sometimes called the "Purchaser") Tenant shall be bound to the Purchaser under the terms and conditions of this Lease for the balance of the remaining Lease term, including
any extensions or renewals, with the same force and effect as if the Purchaser were Landlord under this Lease; provided, however, that such Purchaser shall not be liable or bound to Tenant
(i) for any act or omission of any prior landlord, (ii) for any offsets or defenses which Tenant might have against any prior landlord, (iii) for or by any Rent which Tenant might
have paid for more than the current month, (iv) by any amendment modification of, or consensual termination agreement with respect to, the Lease made without the Mortgagee's consent,
(v) for any Security Deposit given by Tenant to a prior landlord unless such deposit is actually received by such Purchaser, (vi) for any repairs or replacements required by this Lease
arising prior to the date Purchaser takes possession of the Leased Premises, or (vii) for any moving, relocation or refurbishment allowance or any construction of or payment or allowance for
tenant improvements to the Leased Premises or any part thereof for the benefit of Tenant except as set forth in this Lease. Tenant further agrees at the election of the Purchaser to attorn to the
Purchaser, including the Mortgagee if it be the Purchaser, as its Landlord. Such attornment shall be effective without the execution of any further instruments upon the Purchaser's succeeding to the
interest of Landlord under this Lease. The respective rights and obligations of Tenant and the Purchaser upon the attornment, to the extent of the then remaining balance of the term of this Lease and
any extensions and renewals, shall be and are the same as those set forth in this Lease, but Tenant agrees upon demand to execute such additional instruments defining the terms of such attornment as
Landlord or the Purchaser may require. Each such Mortgagee and each such Purchaser shall be a third-party beneficiary of the provisions of this Paragraph.

33.ESTOPPEL CERTIFICATES:Tenant agrees to furnish on the Commencement Date of this Lease and from time to time
within ten (10) days of request by Landlord or Landlord's mortgagee, a statement certifying that the Tenant is in possession of the Leased Premises; the Leased Premises are acceptable; this
Lease is in full force and effect; this Lease is unmodified; Tenant claims no present charge, lien, or claim of offset against Rent; the Rent is paid for the current month but is not paid and will not
be paid for more than one month in advance (except estimated additional Rent under Paragraph 6); there is no existing default under this Lease; and such other matters as may be reasonably
required by Landlord or Landlord's mortgagee.

34.SUCCESSORS:This Lease shall be binding upon and inure to the benefit of Landlord and Tenant and their
respective heirs, personal representatives, successors and assigns. It is hereby covenanted and agreed that should Landlord's interest in the Leased Premises cease to exist for any reason during the
term of the Lease, then notwithstanding the happening of such even at the election of Landlord's successor herein, this Lease shall nevertheless remain unimpaired and in full force and effect and
Tenant hereunder agrees to attorn to the then owner of the Leased Premises.

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35.REAL ESTATE COMMISSION:Tenant represents and warrants that is has dealt with no other broker, agent, or
other person other than Jackson & Cooksey in connection with this transaction, and that no other broker, agent, or other person brought about this transaction. Landlord and Tenant each agree to
indemnify and hold the other harmless from and against any claims by any broker, agent, or other person claiming a commission or other form of compensation by virtue of having dealt with Tenant or
Landlord respectively with regard to this transaction. The provisions of this Paragraph shall survive the termination of this Lease.

36.DEFAULT BY LANDLORD:Landlord shall not be in default, and Tenant shall have no right to any remedy at law
or in equity, unless the act, omission, or condition allegedly giving rise to such default shall have continued uncured or unabated for a period of thirty (30) days following written notice to
Landlord (with a copy to any Mortgagee as provided in Paragraph 32 above) or, if such cure or abatement cannot be accomplished within said 30-day period, then, so long as Landlord
or Mortgagee has commenced such cure or abatement within such 30-day period and diligently pursues same, such period shall be extended a reasonable time to allow completion of the cure or
abatement.

37.MECHANIC'S LIENS:Tenant shall have no authority, express or implied, to create or place any lien or
encumbrance of any kind or nature whatsoever upon, or in any manner to bind, the interest of Landlord in the Leased Premises or the Project or to charge the Rent payable hereunder for any claim in
favor of any person dealing with Tenant, including those who may furnish materials or perform labor for any construction or repairs. Each such claim shall affect, and each such lien shall attach to,
if at all, only the leasehold interest granted to Tenant by this Lease. Tenant covenants and agrees that it will pay or cause to be paid all sums legally due and payable by it on account of any labor
performed or materials furnished in connection with any work performed on the Leased premises on which any lien
is or can be validly and legally asserted against its leasehold interest in the Leased Premises or the improvements thereon. Tenant further agrees to save and hold Landlord harmless from any and all
loss, cost, or expense based on or arising out of claims or liens asserted by parties by virtue of their dealings with Tenant and encumbering the leasehold estate or the right, title and interest of
the Landlord in the Leased Premises or the Project. Under no circumstances shall Tenant be or hold itself out to be the agent or representative of Landlord with respect to any Alterations of the
Leased Premises whether or not consented to or approved by Landlord hereunder.

38.HAZARDOUS WASTE:The term "Hazardous Substances," as used in this Lease shall mean petroleum and petroleum
products and by-products, crude oil, pollutants, contaminants, toxic or hazardous wastes, or any other substances, the use of which is regulated, restricted, prohibited or penalized, or
the removal or disposal of which is required, by any "Environmental Laws," which term shall mean any and all federal, state or local law, ordinance or other statute of a governmental or
quasi-governmental authority relating to the pollution or protection of the environment. Tenant hereby agrees that (i) no activity will be conducted on the Leased Premises that will produce any
Hazardous Substances; (ii) the Leased Premises will not be used in any manner not in compliance with local and federal laws for the storage of any Hazardous Substances; (iii) no portion
of the Leased Premises will be used as a landfill or a dump; (iv) Tenant will not install any underground tanks of any type; (v) Tenant will not allow any surface or subsurface
conditions to exist or come into existence that constitute, or with the passage of time may constitute, a public or private nuisance, (vi) Tenant will not permit any Hazardous Substances to be
brought onto the Leased Premises, and if so brought thereon, then the same shall be stored and used in compliance with all local and federal laws regarding same. Landlord or Landlord's representative
shall have the right but not the obligation to enter the Leased Premises for the purpose of ensuring compliance with all Environmental Laws. If Tenant in any manner contaminates the Leased Premises,
then Tenant shall promptly and diligently institute proper and thorough clean-up procedures at Tenant's sole cost. Landlord hereby agrees to defend, indemnify and hold Tenant, its
employees, partners, agents, contractors, officers and directors and their heirs, successors, and assigns harmless from any and all costs (including costs of litigation), reasonable

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attorney's fees, expenses, liabilities, claims, damages or judgments arising or alleged to occur, and that result, or are alleged to result from the actual, or threatened discharge, dispersal,
disposal, release or escape of Hazardous Substances or other wastes or pollutants (including, but not limited to asbestos, solid, liquid, gaseous or thermal irritants or contaminants, smoke, vapor,
soot, fumes, acids, alkalis, chemicals, and water materials to be recycled, reconditioned or reclaimed), but only as the same are a direct result of any act or omission of Landlord or its agents,
employees, contractors or subcontractors. Tenant hereby agrees to defend, indemnify and hold Landlord, its employees, agents, partners, contractors, officers and directors of their heirs, successors,
and assigns harmless from any and all costs (including costs of litigation), reasonable attorneys' fees, expenses, liabilities, claims, damages or judgments arising or alleged to occur, and that
result, or are alleged to result from the actual, or threatened discharge, dispersal, disposal, release or escape of Hazardous Substances or other wastes or pollutants (including, but not limited to
asbestos, solid, liquid, gaseous or thermal irritants or contaminants, smoke, vapor, soot, fumes, acids, alkalis, chemicals, and water materials to be recycled, reconditioned or reclaimed), but only
as the same are a direct result of any act or omission of Tenant or Tenant's Representatives. Landlord also agrees not to bring hazardous materials into the Leased Premises.

39.ENTIRE AGREEMENT AND LIMITATION OF WARRANTIES:It is expressly agreed by Tenant, as a material consideration
for the execution of this Lease, that this Lease is the entire agreement of the
parties and that there are and were no verbal representations, warranties, understandings, stipulations agreements, or promises pertaining to this Lease not incorporated in this Lease. Tenant
expressly agrees that there are and shall be no implied warranties of merchantability, fitness, habitability, or of any other kind and that Tenant's acceptance of the Leased Premises shall be "as is."
It is likewise agreed that this Lease may not be altered, waived, amended, or extended except by an instrument in writing signed by both Landlord and Tenant. Not in limitation upon the foregoing,
Landlord agrees that to the extent assignable, all warranties, if any shall exist, from contractors or suppliers with respect to the improvements to the Leased Premises hereunder are hereby partially
assigned to Tenant to the extent necessary to avail Tenant of the benefits thereof with respect to its leasehold estate and property located at the Leased Premises.

40.FINANCIAL STATEMENTS:From time to time Landlord may need to obtain financing or renew financing on the
Project, or perform calculations for various reasons regarding the value of the Project. Tenant hereby agrees to provide to Landlord financial statements on its business when requested, but not more
than once annually, indicating the most current year end and quarterly financial status of the business. Landlord will not deliver such financial statement to any third party except in confidence and
only as required by Landlord's lenders or in conjunction with appraisals of the Project.

41.FORCE MAJEURE:



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42.MISCELLANEOUS:



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43.NOTICE:



44.LIMITATION ON TENANT'S DAMAGES:Tenant agrees that any liability of Landlord under this Lease shall be
limited solely to Landlord's interest in the Project, and no other assets of Landlord shall be subject to levy or execution.

Executed
by Landlord and Tenant as of this            day
of                        , 2000.

|LANDLORD                                              |  | TENANT                     
|----------------------------------------------------- |  | ---------------------------
|Jackson-Shaw Technology Center II Limited Partnership |  | TestChip Technologies, Inc.
|4890 Alpha Road, Suite 100                            |  | Address:                   
|Dallas, Texas 75244                                   |  | Dallas, Texas              

|By:  |  | Stephen S. Kurth     |  | By:                                                                   |  | 
|---- |  | -------------------- |  | --------------------------------------------------------------------- |  | 
|Its: |  | First Vice President |  |                                                                       |  | 
|     |  |                      |  | (please print)                                                       
|     |  |                      |  | Its:                                                                  |  | 
|     |  |                      |  | Leased Premises:
2600 Technology Drive, Suite 600
Dallas, Texas 75074

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EXHIBIT B        TENANT IMPROVEMENTS

Landlord will supply Tenant with a construction allowance of$457,550.00($25.00
psf) to be used for Tenant Improvements. Should the actual construction costs exceed this amount, Tenant shall pay such excess to Landlord prior to the commencement of the
construction.

Landlord's
architect will supply floor plans and construction drawings with MEP drawings to be provided by the subcontractors. The Tenant Improvements shall be constructed in accordance
to plans and specifications approved by Landlord and Tenant. Landlord agrees to work diligently with Tenant to keep the improvement costs at the allocated allowance and Landlord at, no cost to Tenant
or deduction from the Tenant Improvement allowance, shall obtain three (3) bids from qualified sub-contractors. The Landlord is responsible for the costs to construct the Building
to its shell condition. The shell condition
is defined as the slab, roof, exterior walls, overhead doors, storefronts and fire sprinkler system will be in place and water, gas, and electrical service will be nm to the Building.

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[JUPITER BUSINESS CENTER]

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EXHIBIT "D"        RULES AND REGULATIONS

The following Rules and Regulations are prescribed by Landlord in order to provide and maintain, to the best of Landlord's ability, orderly, clean and desirable
premises, building and parking facilities for the Tenants therein and to regulate conduct in and use of the Lease Premises, the Building and parking facilities in such a manner as to minimize
interference by others in the proper use of the Leased Premises by Tenant. All references to Tenant include not only the Tenant, but also Tenant's agents, employees, invitees, licensees, visitors,
assignees, and/or sublesses:



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EXHIBIT "E"        RENEWAL OPTION

Tenant is granted the option to extend the term of this Lease for 1 extended term of five(5) years, provided no event of default exists at the time of exercise of
the option and no condition exists which with the giving of notice or the passage of time or both would constitute an event of default, and Tenant gives written notice of its exercise of the option at
least one hundred twenty (120) days prior to the expiration of the original term. The extension terms(s) shall be upon the same terms and conditions as set forth herein, except Tenant shall
have no further night of renewal after the 2nd extension term prescribed above, and the base Rental will be equal to the then prevailing rate for comparable space for a comparable term.

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EXHIBIT "F"        EXPANSION RIGHT OF FIRST REFUSAL

During the term of this Lease, if no event of default exists beyond any applicable cure period, in the event that Landlord receives an offer to lease all or any
portion of the Building of which space is contiguous to the Leased Premises outlined herein and which offer is not a renewal with an existing tenant in the Building and which offer Landlord is
prepared to accept, Landlord shall give Tenant notice (the "Notice'), in accordance with Section 43(c) above, of such offer which Notice shall contain all of the pertinent terms of such offer.
Tenant shall have a period of five (5) business days from the date the Notice is given to Tenant in which to commit irrevocably to lease all of the space covered by the Notice under all of the
terms of the Notice, failing in any element of which election Tenant shall be deemed to have waived its rights under this Exhibit "F", time being especially of the essence herein. If Tenant so elects
to exercise such option, Landlord and Tenant will immediately execute a lease amendment substantially in accordance with this Lease except that the terms of the Notice shall apply therein. If Tenant
does not so elect, or is deemed not to have so elected, or if Tenant so elects but fails or refuses with in five (5) days of receipt of the proposed lease to execute same, Landlord may proceed
with the lease transaction described in the Notice. This Exhibit "F" shall remain in effect for subsequent leasing of space in the Building. If Tenant has an express option under this Lease to extend
the term of this Lease, and if Tenant shall not timely so elect, then the provisions of this Exhibit "F" shall not apply subsequent to the expiration of said extension election option.



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