Texas Instruments PHP1250 User manual

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Texas Instruments Home Computer
Disk
Memory
Drive
Model
No.
PHP1250

FEDERAL
COMMUNICATIONS
COMMISSION
REQUIREMENTS
CONCERNING
RADIO
FREQUENCY
INTERFERENCE
The
Texas
Instruments
Home
Computer
and
peripherals
generate
and
use
radio
frequency
(RF)
energy.
If
not
installed
and
used
properly
(as
outlined
in
the
instructions
provided
by
Texas
Instruments),
this
equipment
may
cause
interference
to
radio
and
television
reception.
This
equipment
has
been
type-tested
and
found
to
comply
with
the
limits
for
a
Class
B
computing
device
in
accordance
with
the
specifications
in
Subpart
J
of
Part
15
of
FCC
Rules.
These
rules
are
designed
to
provide
reasonable
protection
against
radio
and
television
interference
in
a
residential
installation.
However,
there
is
no
guarantee
that
interference
will
not
occur
in
a
particular
installation.
If
this
equipment
does
cause
interference
to
radio
or
television
reception
(which
you
can
determine
by
turning
the
equipment
off
and
on),
try
to
correct
the
interference
by
one
or
more
of
the
following
measures:
@
Reorient
the
receiving
antenna
(that
is,
the
antenna
for
the
radio
or
television
that
is
‘‘receiving’’
the
interference).
m@
Change
the
position
of
the
computer
with
respect
to
the
radio
or
television
equipment
that
is
receiving
interference.
m@
Plug
the
computer
into
a different
wall
outlet
so
that
the
computer
and
the
equipment
receiving
interference
are
on
different
branch
circuits.
If
these
measures
do
not
eliminate
the
interference,
please
consult
your
dealer
or
an
experienced
radio/television
technician
for
additional
suggestions.
Also,
the
Federal
Communications
Commission
has
prepared
a
helpful
booklet,
‘‘How
to
Identify
and
Resolve
Radio-TV
Interference
Problems.’
This
booklet
is
available
from
The US Government Printing Office
Washington, D. C. 20402
Please
specify
Stock
Number
004-000-00345-4
when
ordering
copies.
WARNING:
This
equipment
has
been
certified
to
comply
with
the
limits
for
a
Class
B
computing
device,
pursuant
to
Subpart
J
of
Part
15
of
FCC
Rules.
Only
peripherals
(computer
input/output
devices,
terminals,
printers,
etc.)
certified
to
comply
with
the
Class
B
limits
may
be
attached
to
this
computer.
Operation
with
non-certified
peripherals
is
likely
to
result
in
interference
to
radio
and
TV
reception.

Texas Instruments Home Computer
Disk
Memory
Drive
Model No. PHP1250
IMPORTANT
Record the serial number from the Disk
Memory Drive and the purchase date in the
space below. The serial number is identified
by the words “‘SERIAL NO.’’. Always reference
this information in any correspondence.
PHP1250
Model No. Serial No. Purchase Date
Copyright © 1982, Texas Instruments Incorporated

INTRODUCTION
The Texas Instruments Disk Memory Drive is a high-speed, high-volume memory
device. Utilizing a 5% inch diskette*, the disk drive can rapidly locate, read from, and
write to any position or file on the diskette. The disk drive spins the diskette at a
constant speed and, under the direction of the TI Disk Drive Controller*, places the
magnetic read/write head at the desired position on the diskette.
This manual contains only the set-up, service, and warranty information for the Disk
Memory Drive. For instructions regarding setup, test, and operation of the complete
disk system, please refer to the Disk Memory System manual included with the Disk
Drive Controller.
Depending on the type of disk drive you are using, two possible configurations exist for
setting up the system. You can have one internal disk drive that fits inside the
Peripheral Expansion System and up to two external drives. Or, you can have up to
three external drives connected to the system.

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SET-UP
INSTRUCTIONS
Once
you’ve
unpacked
the
unit,
you're
ready
to
insert
the
Controller
Card
into
the
peripheral
system.
(Save
the
packing
material
for
storing
or
transporting
the
unit.)
The
steps
involved
in
inserting
and
checking
the
operation
of
the
Disk
Drive
Controller
Card,
an
internal
disk
drive,
and
external
disk
drives
are
included
in
this
section.
Please
read
this
material
completely
before
proceeding.
CAUTION
Electronic
components
can
be
damaged
by
static
electricity
discharges.
To
avoid
damage,
do
not
touch
the
connector
contacts.
The
Peripheral
Expansion
System
unit
has
eight
slots
into
which
accessory
cards
can
be
inserted.
The
Peripheral
Expansion
Card
must
occupy
slot
number
1.
(For
information
on
setting
up
the
peripheral
system,
refer
to
the
Peripheral
Expansion
System
owner’s
manual.)
If
you
have
an
internal
Disk
Memory
Drive
(Model
PHP1250)
in
the
Peripheral
Expansion
System
unit,
the
Disk
Drive
Controller
Card
must
occupy
slot
number
8.
Other
cards
can
be
inserted
in
any
of
the
remaining
slots.

Disk
Drive
Information
)y
As
it
comes
from
the
factory,
a
disk
drive
is
ready
to
run
as
the
only
drive
on
your
system.
If
you
are
using
more
than
one
drive,
complete
the
following
steps
for
all
but
one
of
the
drives.
The
last
external
drive
should
be
connected
without
being
altered.
DO THE FOLLOWING ONLY IF YOU
ARE USING TWO OR THREE DRIVES!
1.
WARNING:
ALL
POWER
CORDS
MUST
BE
DISCONNECTED
FROM
THE
POWER
OUTLETS
DURING
THE FOLLOWING
PROCEDURE!
2. To remove the cover, do one of the following.
g Internal Disk Drive — On the side of the disk drive is a tab located near the back
of
the
drive.
On
the
back
of
the
drive
is
a
hole
designed
to
help
lift
the tab
to
remove the disk drive cover. Remove the cover by lifting the tab and then sliding
out the drive’s contents.
m External Disk Drive — On all but one of your drives, use a Phillips-head
screwdriver
to
remove
the
six
screws
that
hold
the
cover.
Lift
the
cover
off.
3.
Locate
the
main
printed
circuit
board.
On
it,
locate
the
termination
resistor
pack.
It
has 14
leads
and
looks
like
an
integrated
circuit.
(Note:
The main
boards
look
slightly
different
on
the
internal
and
external
drives,
but
the
pack
is
in
the
same
place
on
each.)
Be
careful
not
to
disturb
the
strapping
pack
(or
shunt
pack,
which
is
also removable)
located
very
near
the
resistor
pack.
4.
Remove
the
termination
resistor
pack
by
prying
each
end
up
slightly
with
a
small
screwdriver
and
then
lifting
it
out.
Pull
straight
up.
5.
Save
the
single
drive
termination
resistor
pack
so
that
you
can
reinsert
it
if
the
drive
is
ever
to
be
used
again
as
a
single
or
last
disk
drive.
If
you
do
replace
the
pack,
note
that
if
the
socket
for
the
resistor
pack
has
more
holes
than
there
are
pins
on
the
pack,
the
pack
should
be
installed
toward
the
outer
edge
of
the
circuit
board,
leaving
the
unused
holes
toward
the
center
of
the
board.
6.
Replace
the
cover
on
the
drive,
aligning
and
tightening
the
screws
carefully.
DO
NOT
OPERATE
ANY UNIT
WITHOUT
REPLACING
THE COVER.

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Disk Memory Drive
eer
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ty
So
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The
procedure
for
setting
up
the
Disk
Memory
System
depends
on
the
type
of
disk
drive(s)
you
have.
@
If
you
have
an
internal
drive
only,
see
‘“‘Connecting
the
Controller
Card
to
an
Internal
Disk
Drive.”’
@
If
you
are
using
an
internal
disk
drive
with
one
or
more
external
disk
drives,
follow
the
directions
in
‘‘Connecting
the
Controller
Card
to
Both
Internal
and
External
Disk
Drives.”’
@
If
you
have
one
or
more
external
drives
and
no
internal
drive,
follow
the
directions
in
‘‘Connecting
the
Controller
Card
to
External
Disk
Drives.”
Connecting
the
Controller
Card
to
an
Internal
Disk
Drive.
1.
Turn
off
the
computer
console
and
all
attached
devices.
2.
WARNING:
TO
AVOID
DAMAGING
ACCESSORY
CARDS,
WAIT
TWO
(2)
MINUTES
AFTER
TURNING
OFF
THE
UNIT
FOR
THE
POWER
TO
DISCHARGE
BEFORE
PROCEEDING.
3.
Remove
the
top
from
the
peripheral
system
by
lifting
the
back
edge
of
the
top
and
pulling
up.
4.
Carefully
place
the
Peripheral
Expansion
System
on
its
left
side
(the
disk
drive
compartment
now
should
be
at
the
top).
5.
Two
screws
which
support
the
front
casing
of
the
disk
drive
compartment
are
located
on
the
top
and
bottom
of
the
peripheral
system.
Remove
these
screws
and
place
the
peripheral
system
in
its
proper
upright
position.
6.
Remove
the
front
casing
from
the
opening
of
the
disk
drive
compartment.
7.
A
three-wire
power
cord
is
inside
the
compartment.
One
end
of
this
cord
is
connected
to
the
peripheral
system.
Plug
the
loose
end
of
the
cord
into
the
four-pin
connector
on
the
back
of
the
disk
drive.
POWER
CONNECTOR
8.
The
connector
cable
included
with
the
internal
disk
drive
is
designed
to
connect
the
drive
to
the
Controller
Card.
Insert
the
connector
cable
through
the
opening
at
the
back
of
the
disk
drive
compartment
so
that
the
end
with
the
edge
connector
is
inside
the
compartment
and
the
end
with
the
34-pin
connector
is
by
slot
number
8.

bos
INDICATOR LIGHT” \X
LO:
11.
12.
13.
14.
15.
16.
Next, note that the label identifying the Disk Drive Controller Card is on the top of
the card. On the front of the card is an indicator light. The light can be seen from
the front of the peripheral system unit when the card is active. Hold the Disk Drive
Controller Card so that the indicator light faces the front of the peripheral system
and the connector tab faces the back of the unit.
CONNECTOR TAB
N
Carefully align the card with slot number 8 with the connector tab facing the back
of the peripheral system. Slide the card halfway down into the slot.
Attach the 34-pin connector of the disk drive cable to the 34-pin connector on the
side of the tab on the Controller Card.
Firmly press the Controller Card into the slot until the connection is made. Then
take up any slack in the cable by pulling the excess through the opening into the
disk drive compartment.
Attach the edge connector of the disk drive cable to the 34-pin connector tab on the
back of the disk drive.
Slide the disk drive into the compartment so that the red indicator light is in the
top left-hand corner. Note: Align the screw openings on the top and bottom of the
peripheral system with the holes in the disk drive. If they do not line up, the drive
may be in upside down.
SCREW OPENINGS
INDICATOR LIGHT
Again, carefully place the peripheral system on its left side. Two extra screws are
included with the internal disk drive. These screws are to be used to secure the
drive in the peripheral system. Insert two screws into the openings on the bottom of
the peripheral system. After they are secure, place the peripheral system in its
proper upright position, and insert the other two screws in the openings on the top
of the system.
Replace the top on the peripheral system by sliding the front edge under the
extension on the front of the unit. Firmly press down on the back edge of the top.
Do not run the system without the top in place: the top ensures proper ventilation.
Note: If the top does not fit properly, remove the card and realign it in the slot,
remembering to press down firmly until the connection is made.
)

Disk Memory Drive
Connecting
the
Controller
Card
to
Both
Internal
and
External
Drives
i, If
your
disk
system
includes
both
an
internal
disk
drive
(Model
PHP1250)
and
one
or
more
external
drives
(Model
PHP1850),
first
remove
the
termination
pack
from
the
internal
drive
and
install
the
internal
drive
and
the
Controller
Card,
following
the
instructions
in
the
preceding
section.
Use
the
special
cable
included
with
the
Controller
Card
to
connect
the
external
drive(s)
to
your
system.
Connect
one
end
of
the
cable
to
the
connector
tab
that
extends
from
the
back
of
the
peripheral
system,
making
sure
that
the
pins
on
the
tab
align
with
the
holes
on
the
connector
cable.
.
Attach
the
adapter
board
included
with
the
Controller
Card
to
the
other
end
of
the
cable.
Each
external
drive
has
an
attached
cable
with
two
connectors,
one
at
the
end
of
the
cable
and
one
near
the
middle
of
the
cable.
Attach
the
end
of
the
disk
drive
cable
to
the
adapter
board
on
the
Controller’s
cable.
If
you
are
using
two
external
drives,
insert
an
adapter
board
into
the
connector
in
the
middle
of
the
first
disk drive’s
cable.
Connect
the
end
of
the
second
external
drive’s
cable
into
the
adapter
board
of
the
first
external
drive’s
cable.
All
but
the
last
disk
drive
(if
you
are
using
more
than
one
drive)
should
have
their
termination
packs
removed.
The
drive
farthest
from
the
controller
should
be
the
one
that
is
not
modified.
Note:
It
may
be
necessary
to
rotate
the
adapter
board
in
order
to
insert
it.
It
goes
in
easily
if
you
have
it
positioned
correctly.
SPECIAL CABLE
The
internal
drive
in
the
Peripheral
Expansion
System
is
considered
DSK1.
The
first
external
drive,
the
one
connected
directly
to
the
Controller
Card,
is
DSK2.
The
third
disk
drive
(farthest
from
the
Controller)
is
DSK3.
The
labels
provided
with
your
drive(s)
can
be
used
to
identify
each
drive.

Connecting
the
Controller
Card
to
External
Disk
Drives
‘+y
1. Turn off the computer console and all attached devices.
2. WARNING: TO AVOID DAMAGING ACCESSORY CARDS, WAIT TWO (2) MINUTES
AFTER TURNING OFF THE UNIT FOR THE POWER TO DISCHARGE BEFORE
PROCEEDING.
3. Remove the top from the peripheral system unit by lifting the back edge of the top
and pulling up.
4. The label identifying the Controller Card is on the top of the card. On the front of the
card is an indicator light. Hold the Disk Drive Controller Card so that the indicator
light faces the front of the peripheral system unit and the connector tab faces the
back of the unit.
CONNECTOR TAB
INDICATOR LIGHT NX
5. Carefully align the card with the desired slot so that the connector tab faces the back
of the peripheral system; firmly press the card down into the slot until connection y
has been made.
6. Replace the top on the peripheral system by sliding the front edge under the
extension on the front of the unit. Firmly press down on the back edge of the top. Do
not run the system without the top in place; the top ensures proper ventilation. Note:
If the top does not fit properly, remove the card and realign it in the slot, pressing
down firmly until the connection is made.
7. Each external drive has an attached cable with two connectors, one at the end of the
cable and one near the middle of the cable. Attach the end of the cable on the disk
drive to the connector tab on the Controller Card.
8. If you are using more than one external drive, insert an adapter board into the
middle connector of the first and second disk drive’s cable. Note: It may be
necessary to rotate the adapter board in order to insert it. It goes in easily if you
have it positioned correctly.

—S
Disk Memory Drive
9.
Having
removed
the
termination
packs
from
all
but
the
last
drive
(the
one
farthest
away
from
the
Controller),
connect
the
drives
in
series.
The
connector
on
the
end
of
the
second
drive’s
cable
plugs
into
the
adapter
board
in
the
middle
of
the
first
drive’s
cable.
The
third
drive is
connected
to
the
second
drive in the
same
way.
Whether
you have
two
or
three
drives,
the
drive
farthest
away
from
the
controller
should
be
the
one
that
has not been
modified.
The
first
drive,
the
one
connected
directly
to
the
Controller
Card,
is
identified
as
DSK1
by
TI BASIC.
The second
drive,
connected
to
the
cable
of
DSK1,
is
DSK2.
The third
drive is
DSK3. The labels
provided
with
your
drive(s)
can
be
used
to
identify
each
drive.
CAUTION
Always disconnect the Peripheral Expansion System
before moving the computer console. The cable
connecting the console and peripheral system is not
designed to support the weight of the units. To
prevent damage, always disconnect all devices before
moving any part of your Home Computer system. For
long distance moves, remove all cards from the
Peripheral Expansion System and repack the devices in
their original packing material.

Starting
the
System
»)
After
the
Controller
Card
has
been
inserted
into
the
Peripheral
Expansion
System
unit
and
the
drives
have
been
connected,
plug
the
power
cords
into
your
electrical
wall
outlets.
Next,
turn
on
the
power
switches
on
the
backs
of
your
external
disk
drives
(if
any)
and
then
the
switch
on
the
front
of
the
peripheral
system
unit.
Note:
When
you
turn
on
the
peripheral
system,
the
internal
disk
drive
is
automatically
turned
on.
WARNING
Each time you operate your computer/disk system,
follow this power-up sequence:
1. Turn on the external disk drives.
2. Turn on the Peripheral Expansion System unit.
3. Then turn on the monitor and computer console.
For proper memory allocation by the computer, the
Peripheral Expansion System must be ON when the
computer console is switched on. Otherwise, the
disk drives, Controller Card, and Disk Manager
module will not function correctly. The computer
console must be turned off and turned back on in
order to restore normal operation.
When
you
turn
on
the
console,
the
disk
drives’
working
lights
may
come
on
briefly
and
then
go
off.
If
they
stay
on,
the
disk
drive
cable
is
probably
plugged
in
upside
down.
Turn
off
all
units
and
make
sure
that
the
disk
drive
cable
connections
have been
made
properly.
10

Disk Memory Drive
CARING FOR DISKETTES
1,
Handle
the
diskette
by
its
protective
cover.
Do
not
touch
any
part
of
the
diskette’s
surface;
fingerprints
will
destroy
disk
contents.
Be careful not to bend the diskette.
Do
not
write
on
the
diskette
cover
with
a
ball-point
pen
or
pencil;
only
use
a
felt-tip
pen.
Do
not
scratch
the
surface
of
the
diskette.
Any
scratch,
even
if
too
small
to
be
seen,
may
destroy
all
the
information
on
a
number
of
sectors.
This
usually
causes
information
to
be
lost
from
most
of
the
files
on
the
diskette.
Do not expose diskettes to magnetic fields or excessive heat or cold.
Do
not
place
tape
of
any
kind
(masking
or
other)
on
the
surface
of
a
diskette.
Do not remove a diskette from a drive if the drive light is on.
11

ES
ESS
OEE
POR
DCS
EE
IES
RETESET
=
SR
rnecrenemereem
e
IN
CASE
OF
DIFFICULTY
If
the
disk
system
does
not
appear
to
be
working
properly,
check
the
following:
1.
Power
—
Be
sure
all
devices
are
plugged
in.
Then
turn
on
the
power
to
the
units
in
the
proper
sequence:
disk
drives
and
Peripheral
Expansion
System
first,
followed
by
the
console
and
the
monitor.
2.
Card
Position
—
Turn
the
power
off,
wait
two
minutes,
and
remove
the
top
of
the
peripheral
system.
Verify
that
all
cards
are
inserted
properly
and
then
replace
the
top.
3.
Cable
—
Check
to
be
sure
that
the
proper
cables
are
being
used.
Check
the
cables
for
loose
or
broken
leads.
Check
to
see
that
the
cables
are
properly
connected,
right
side
up.
4.
Peripheral
Expansion
System
—
Check
for
proper
connection
between
the
console
and
peripheral
system.
5.
Home
Computer
—
Check
to
see
that
the
Home
Computer
works
properly
with
all
accessories
disconnected.
6.
If
none
of
the
above
procedures
corrects
the
difficulty,
consult
“If
You
Have
Questions
or
Need
Assistance’”’
or
see
the
‘‘Maintenance
and
Service
Information”
section
of
the
User’s
Reference
Guide.
12

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Disk Memory Drive
SaaS
SEN
USE
ESI
CAE
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COSRE
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Cee
te
SI
eRe
RE
LY
EXCHANGE
CENTERS
(LOCAL
SERVICE
OPTIONS)
If
some
part
of
your
disk
system
requires
service,
instead
of
returning
it
to
a
service
facility
for
repair
or
replacement,
you
may
elect
to
exchange
it
for
a
factory
reconditioned
unit
by
going
in
person
to
one
of
the
exchange
centers
which
has
been
established
across
the
United
States.
A
handling
fee
will
be
charged
by
the
exchange
center
for
in-warranty
exchanges.
Out-of-warranty
exchanges
will
be
charged
at
the
rates
in
effect
at
the
time
of
the
exchange.
Please
refer
to
the
enclosed
exchange
fee
information
and
the
location
of
the
nearest
exchange
center.
To
determine
if
there
is
an
exchange
center
in
your
area,
look
for
Texas
Instruments
Exchange
Center
in
the
white
pages
of
your
telephone
directory,
or
look
under
the
Calculator
and
Adding
Machine
heading
in
the
yellow
pages.
Please
call
the
exchange
center
for
availability
and
exchange
fee
information.
Write
the
Consumer
Relations
Department
for
further
details
and
the
location
of
the
nearest
exchange
center.
13

IF YOU HAVE QUESTIONS OR NEED ASSISTANCE
If you have questions concerning disk system repair or peripheral, accessory, or
software purchase, please call our Consumer Relations Department at 800-858-4565
(toll free within the contiguous United States except Texas) or 800-692-4279 within
Texas. The operators at these numbers cannot provide technical assistance.
For technical questions about programming, specific application, etc., you can call
806-741-2663. Please note that this is not a toll-free number, and collect calls cannot be
accepted.
As an alternative, you can write to:
Consumer Relations Department
Texas Instruments Incorporated
P.O. Box 53
Lubbock, Texas 79408
Because of the number of suggestions which come to Texas Instruments from many
sources containing both new and old ideas, Texas Instruments will consider such
suggestions only if they are freely given to Texas Instruments. It is the policy of Texas
Instruments to refuse to receive any suggestions in confidence. Therefore, if you wish to
share your suggestions with Texas Instruments, or if you wish us to review any BASIC
language program which you have developed, please include the following statement in
your letter:
“All of the information forwarded herewith is presented to Texas
Instruments on a nonconfidential, nonobligatory basis; no relationship,
confidential or otherwise, expressed or implied, is established with Texas
Instruments by this presentation. Texas Instruments may use, copyright,
distribute, publish, reproduce, or dispose of the information in any way
without compensation to me.”
14

Disk Memory Drive
THREE-MONTH LIMITED WARRANTY
THIS
TEXAS
INSTRUMENTS
DISK
MEMORY
DRIVE
WARRANTY
EXTENDS
TO
THE
ORIGINAL
CONSUMER
PURCHASER
OF
THE
ACCESSORY.
WARRANTY DURATION
This Disk Memory Drive is warranted for a period of three (3) months from the date of original
purchase by the consumer.
WARRANTY COVERAGE
This Disk Memory Drive is warranted against defective materials or workmanship. THIS
WARRANTY IS VOID IF THE ACCESSORY HAS BEEEN DAMAGED BY ACCIDENT,
UNREASONABLE USE, NEGLECT, IMPROPER SERVICE OR OTHER CAUSES NOT
ARISING OUT OF DEFECTS IN MATERIALS OR WORKMANSHIP.
WARRANTY DISCLAIMERS
ANY IMPLIED WARRANTIES ARISING OUT OF THIS SALE, INCLUDING BUT NOT
LIMITED TO THE IMPLIED WARRANTIES OR MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE ABOVE
THREE-MONTH PERIOD. TEXAS INSTRUMENTS SHALL NOT BE LIABLE FOR LOSS
OF USE OF THE DISK DRIVE OR OTHER INCIDENTAL OR CONSEQUENTIAL COSTS,
EXPENSES, OR DAMAGES INCURRED BY THE CONSUMER OR ANY OTHER USER.
Some states do not allow the exclusion or limitation of implied warranties or consequential
damages, so the above limitations or exclusions may not apply to you.
LEGAL REMEDIES
This warranty gives you specific legal rights, and you may also have other rights that vary
from state to state.
WARRANTY PERFORMANCE
During
the
above
three-month
warranty
period,
your
Disk
Controller
and
Disk
Manager
module
will
be
repaired
or
replaced
with
a
new
or
reconditioned
unit of the
same
or equivalent
model
(at
TI’s
option)
when
the
unit
is
returned
by
prepaid
shipment
to
a
Texas
Instruments
Service
Facility
listed
below.
The
repaired
or
replacement
unit
will
be
warranted
for
three
months
from
date
of
repair
or
replacement.
Other
than
the
postage
requirement,
no
charge
will
be
made
for the
repair or
replacement
of in-warranty
units.
TEXAS INSTRUMENTS CONSUMER SERVICE FACILITY
U.S. Residents Canadian Residents
Texas Instruments Service Facility Geophysical Services Incorporated
2303 North University 41 Shelley Road
Lubbock, Texas 79415 Richmond Hill, Ontario, Canada L4C5G4
Consumers in California and Oregon may contact the following Texas Instruments offices for
additional assistance or information.
Texas Instruments Consumer Service
Texas Instruments Consumer Service 6700 Southwest 105th
831 South Douglas Street Kristin Square, Suite 110
El Segundo, CA 90245 Beaverton, Oregon 97005
[phone] [phone]
Bs NS a RE RD ENS ON ea RNa TERE ES IN EIS NER LI RE I IEEE TEN Os EE)
15

Texas Instruments invented the integrated circuit,
the microprocessor, and the microcomputer.
Being first is our tradition.
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lf
TEXAS INSTRUMENTS
INCORPORATED
PRINTED IN U.S.A.