TAC
310SX
A 14-or 16-channel, synthesized
VHF or UHF mobile radio — small
enough for dashmounting.
E P R O M
Progra mming
Instructio ns
> ' Y $ (
j o v
TACTEC
SYSTEMS INCORPORATED
FOREWORD
The TACTEC EPROM programming system uses TACTEC-designed software, a Commodore
VIC 20 computer, and an MI-594141 EPROM programming cartridge to rapidly pro
gram EPROMs used in TAC310SX synthesized radios. The program is extremely
friendly - it uses the English language (via the keyboard) and audio sound ef
fects for prompts and error messages. English language conmunication elimin
ates the use of hexadecimal code, which greatly speeds the programming process.
The Commodore VIC 20 and programming cartridge have many capabilities, but this
manual is dedicated to their use in programming TACTEC EPROMs. It is complete
- if you are a first time user, you will not need to consult other manuals.
The program software is contained on a series of master EPROMs that plug into
the programming cartridge. The leads of any EPROM should be in contact with a
conductive material, except when Inserted In an EPROM socket, to prevent damage
due to build-up of static charge. Metal parts of fixtures and tools, and hand
ling facilities, should be grounded. An antistatic box is provided for ship
ment and storage of the EPROMs to prevent damage due to electrostatic dis
charge. Failure to use this box will void the warranty.
An EPROM should never be inserted or removed from the socket with the power on.
Always make sure that the power switch or switches are OFF before Inserting or
removing an EPROM. If a zero insertion force (ZIF) socket 1s not present in
the equipment, use an EPROM IC puller or a small bladed screwdriver to alter
nately pry up one end, then the other, prying a small amount at a time.
PROPRIETARY NOTICE
The information disclosed 1n this manual was originated by and is the property
of TACTEC Systems Incorporated. The contents of this manual have been reviewed
for accuracy at the time of publication. No responsibility is assumed should
any portion be inaccurate. Specifications and information within this manual
are subject to change without notice to permit design improvements.
VIC and VIC 20 are registered trademarks of Commodore Business Machines, Inc.
IMPORTANT
All adjustments or tests during or coincident with the installation, servicing,
or maintenance of a radio station that may affect proper operation of the sta
tion must be made by, or under the supervision of, the holder of a General Ra
diotelephone Operator License.
All radio transmitters must be licensed by the Federal Communications Commis
sion, which assigns operating frequencies to the licensee. It is the responsi
bility of the equipment owner to obtain this license before using the equip
ment. Do not operate the radio without an FCC license.
CAUTION
The programming cartridge contains a power supply capable of generating up to
25 volts at 30 mil 1iamperes. Misoperation of the cartridge will not damage it,
the VIC 20 computer, or you. It could, however, damage an EPROM or an external
device jumpered to the EPROM socket. Please read and understand this manual
before using the programming cartridge, and use it with care.
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VIC 20 Controls and Port s ......................................................... 4
Programming Cartridge Controls.....................................................5
Setting Up The Sy stem
............................................................. 6
Unpacking ..................................................................... 6
Connecting the Computer to the Television Set ............................... 6
To Avoid Confusion About the D i s p la y .........................................7
Plugging 1n the Programming Cartridge the First T i m e
.......................
7
Loading the Master EPROM ........................................................ 9
Main M e n u...................................................................... 9
Starting O ver ..............................................................10
Ttie Frequency List..............................................................10
Initialize................................................................10
Programmed EPROM
......................................................... 11
Editing.................................................................... 12
Programming the new E P R O M .....................................................13
TABLE OF CONTENTS
VIC 20 CONTROLS AND PORTS
FUNCTION KEYS
GAME PORT ON - OFF POWER POWER SOCKET
(not u*«cf) SWITCH LIGHT (attach power supply
her*)
- 4 -
PROGRAMMING CARTRIDGE CONTROLS
-5-
SOCKET
ON-OFF SWITCH
(set to OFF when
removing
RED LEO (lights when
BURN/PROG twitch
set to BURN)
GREEN LED (lights when
SOCKET twitch it tet
MlMlC/PROG
SWITCH (tet
to PROG)
FACTORY
ADJUSTMENTS
(do not
CAUTION
Notched end of
EPROM must
face th it way.
RESET
(tame function
at computer
on-off twitch)
ZERO INSERTION
FORCE (ZlF)
EPROM SOCKET
BLOCK SELECT
SWITCH (set to BLOCK 5,
at shown). Use the switch
numbers embossed on the
case, not the ones on the
switches.
EDGE CONNECTOR
(plugs into computer
Expansion Port)
CAUTION
MIS OPERATI ON OF.THE CARTRIDGE
WILL NOT DAMAGE IT, THE
COMPUTER, OR YOU. YOU COULD,
HOWEVER, DAMAGE AN EPROM OR
AN EXTERNAL DEVICE JUMPERED TO
THE EPROM SOCKET. BE SURE YOU
READ AND THOROUGHLY UNDERSTAND
THE INSTRUCTIONS BEFORE USING
THE CARTRIDGE, AND USE IT WITH
CARE.
BURN/PROG
SWITCH (tet to
except
2716/2732 SWITCH
(set to 2732)
SETTING UP THE SYSTEM
UNPACKING
Unpack the VIC 20, Programming Cartridge, and the EPROMs. You should now have
the following equipment available to set up the system:
• VIC 20 computer
• VIC 20 power supply (large box with two cables)
• VIC 20 RF Modulator (small metal box) and short cable. Some VIC 20s use a
switchbox to switch between the RF modulator and the TV set. The switch has
settings for "computer" and "TV" and should be set to "computer".
• A television set. Although the VIC 20 has color display capabilities, a
black-and-white set will serve well In this application. Most small In
expensive portable sets will work just fine. We used a General Electric
model 12XF3104S.
• An MI-594141 EPROM Programming Cartridge.
• An MI-594141-A master EPROM for the TAC310SX radio.
• A supply of MI-569060 blank (unprogrammed) EPROMs.
• An ultraviolet EPROM eraser. We recommend the Zax "Quick - E“.
• 3 electrical outlets (one for the computer, one for the television, and one
for the ultraviolet eraser).
CONNECTING THE COMPUTER TO THE TELEVISION SET
1. Position the computer and the television set so you can use the keyboard
comfortably while viewing the television screen.
2. Make sure the ON-OFF switch on the right hand side of the computer is OFF.
3. Plug the power supply cord Into an electrical outlet, and then plug the oth
er cord into the power socket on the side of the computer. Ttie power supply
remains on while It Is plugged in, so you should unplug It when not In use.
4. Connect one end of the video cable to the back of the computer, and the oth
er end to the RF modulator. Be sure to plug the video cable Into the com
puter video port, and not to the serial port next to It.
5. Disconnect any antenna wires from the television set VHF terminals. Connect
the short TV antenna cable that runs from the RF modulator to the VHF ter-
mi nals.
6. TUrn on the television set. Set the volume to a comfortable listening level.
7. Turn on the computer. The red power light on the top of the computer should
come on. If it does not, consult the troubleshooting chart In the VIC 20
instruction manual.
8. Ttiere Is a switch on the RF modulator for selecting either channel 3 or 4.
Choose the channel with the weaker reception In your area, and set both the
television and the modulator to that channel. It may be necessary to ad
just the televisions's fine tuning to improve the quality of the display.
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