Digital Mark

Tilde Town Microcomputer System-76

Operator's Manual

Ideal for the office, school, home office, or video arcade parlor, the TTMS-76 is the computer for you!

More than a dozen Interactive Educational Materials present subjects through text, diagrams, and audio, which you interact with through the Standardized Keyboard.
Access stored information and online services to manage your checkbook, stocks, budget, recipes, and check the weather and latest newswire reports.
All the work of the office can be done from the comfort of home with Productivity software, like word processing, calculations, and spreadsheets. Never spend a moment away from your work, your family will appreciate your devotion to the company.
Computer "Video" Games can provide hours of entertainment, testing your skill and competition. Some games transport you to a fantasyland, or deep into outer space, or simulate "real life" sports and board games. Play with your family, friends, or by yourself!
Perform all the functions of a fully-programmable General Purpose Computer, using the built-in TINY BASIC program cartridge. Even if you have no experience at all, the TTMS-76 and an inquiring mind are all you need to learn to develop custom applications for your personal computer.


Inside the TTMS-76 box, you will find:

Caution: Keep polybags and styrofoam packing materials away from small children and other animals.

  1. The TTMS-76 Console houses the Central Processing Unit (CPU) and the Memory Bank containing the Operating System Read Only Memory (OS ROM) and 16k (16 thousand characters or "bytes") of user-programmable Random Access Memory (RAM).

    The console also holds the Standardized Keyboard, and Program Cartridge Slot.

  2. The TV Switch Box connects your TTMS-76 Console to any standard TV set. When the switch is flipped ON, the TV will show output from the computer on channel 3; when the switch is flipped OFF, the TV will show normal antenna input.
  3. The AC Power Adapter plugs into the back of the TTMS-76 Console and then into a wall power socket; use only 110V AC. Adapters for other countries are available by special order.
  4. Each Program Cartridge contains a complete computer program.

Optional Accessories

The following accessories will be available at a future date:

  1. The TTMS-76 console works with any television set, but will produce sharper output on the TTMS-76 Digital Terminal.
  2. The TTMS-76 Program Recorder allows you to save your own computer programs written in BASIC or Assembly Language to tape cassettes.

Inserting Cartridges

To load a program into the TTMS-76 console, hold the cartridge with the label towards you, slide it down into the Program Cartridge Slot until it completely connects. Tap firmly on the title of the cartridge, which will turn yellow.

When it is all the way in, press the START button on the top of the console to begin the program.

When you are done using a program, press the STOP button, and slide the cartridge out of the slot.

HELP! If a cartridge doesn't work, take it out and blow in it clear your browser cache and reload the page.

Technical Data


The TTMS-76 screen displays an 80 x 25 (columns x rows) region of Unicode characters in 16 colors, or 40 x 25 region of Emoji graphics. The supported colors are:

  1. black black
  2. navy navy
  3. green green
  4. teal teal
  5. maroon maroon
  6. purple purple
  7. olive olive
  8. silver silver
  9. gray gray
  10. blue blue
  11. lime lime
  12. aqua aqua
  13. red red
  14. fuchsia fuchsia
  15. yellow yellow
  16. white white


Many program cartridges use only the standard beep noise, but the audio synthesizer can play back any recorded sample in 16-bit stereo "WAV" files.

Keyboard & Character Set

The standard keyboard is restricted to the letters A-Z, digits 0-9, space, return, four arrow keys, and period (.), quote ('), and exclamation mark (!). This permits desktop and tablet users to be equally accomodated.

The Unicode character set is used. For convenient reference, these are the 7-bit ASCII chars with hexadecimal and decimal values:

(portions of this manual are adapted from the Atari 400 Operators Manual)