TRS-80 Model 100 Portable Computer PC PDA

The TRS-80 Model 100 Portable Computer

Works great! I  used it to program security systems for a while then my son use it with Linux for a few years and then got into trouble hacking terminals with it, Since then been in the closet

gathering dust. Time to go! Here is some info for you guys that don't know what it is, for those who do here is a buty that works great. It is missing 1 key,

Included is the original case, Owners Manual and The BASIC Reference Guide!!!!

When introduced, the portability and simplicity of the Model 100 made it attractive to journalists, who could type about 11 pages of text and then transmit it using the built-in modem and TELCOM program for electronic editing and production. The computer is silent when it operates. The keyboard is superior to most others currently on the market. It runs for 20 hours on 4 readily available and easily replaceable AA batteries. Data is protected by a built-in rechargeable battery. There is no boot up routine; the Model 100 operates as soon as the switch is flipped and an application selected. There are several simple programs available on the Internet for transferring Model 100 files to a modern personal computer.

The Model 100 was also used in industrial applications as a programming terminal for configuration of control systems and instruments.

Third-party peripherals for the Model 100 extended its battery life and file storage capacity. Software was designed, and is still available, to extend the display capabilities and to provide more advanced word-processing or calculation software than the supplied programs. To this day, hobbyists continue to design games, applications, and hardware for this device.

With few exceptions, no modern portable computer has the appearance, or some would argue utility, of the Model 100 line. Modern portable computers (laptops) are larger, heavier, and have much shorter battery life than the Model 100.

Although much larger, the Model 100 actually bears a close resemblance to modern PDAs. Its TEXT program is similar to the Memo program found on PalmOne products, and ADDRSS and SCHEDL are essentially simplified versions of Contacts, Tasks and Calendar. The Model 100 has the additional advantage of a full size keyboard, a built-in modem and BASIC programming language. By including BASIC, the Model 100's designers made it possible for users to design additional applications.

Because of its adaptability and features as well as its current relative affordability, the Model 100 and its progeny (Model 102/200/600) enjoy a near cult status among its supporters. Club 100 and Bitchin100 are the center of the Model 100 universe. Model 100 enthusiasts continue to explore this early computer, trading information, participating in contests and designing new applications with existing and newly designed hardware and software

Use this to communicate to other public computers such as your office, dow jones and so on.

The Model 100 keyboard has 56 keys, eight programmable function keys, and four dedicated command keys, but neither a backslash (\) nor a pipe (|) key.

 

When first switched on, the Model 100 displays a menu of applications and files and the date and time. The ROM firmware based system boots instantly, which compares very favourably to disk-based computers. Not only is the machine ready to use immediately on power-up, but it will also continue running, from the same point, the program that was running when the unit was powered off. Cursor keys are used to navigate the menu and select one of the internal or added application programs, or any data file to be worked upon.

 

The 32 kilobyte read-only memory of the Model 100 contains the N82 version of the Microsoft BASIC 80 programming language. This is similar to other Microsoft BASICs of the time and includes good support for the hardware features of the machine: pixel addressing of the display, support for the internal modem and serial port, monophonic sound, access to tape files, and support for the real-time clock and the bar code reader. Unlike other Microsoft BASIC interpreters of the time, the default for floating point numbers is double-precision.

 

The ROM also contains a terminal program, TELCOM; an address/phone book organizer, ADDRSS; a to-do list organizer, SCHEDL; and a simple text editor, TEXT. The TELCOM program allows automation of a login sequence to a remote system under control of the BASIC interpreter.

 

As with other home computers of the era, a vast collection of PEEK and POKE locations were collected by avid hobbyists.

 

Specifications

 

    * Processor: Eight-bit Intel 80C85, CMOS, 2.4 MHz

    * Memory: 32K ROM, 8, 16, 24, or 32K static RAM. Machines with less than 32K could be expanded in 8K increments of plug-in static RAM modules.

    * Display: Eight lines, forty characters LCD with 240 by 64 pixel addressable graphics. The screen was not backlit.

    * Peripherals: The basic package included: Built-in 300 baud modem (North American versions), parallel printer port, serial communication port (shared by internal modem), bar-code reader input, cassette audio tape, real-time clock.

    * Dimensions: 300 by 215 mm by 50 mm, mass about 1.4 kilograms (3.1 lb) with batteries

 

Power supply: Four penlight (AA) cells, or external power adapter 6V (>180 mA, tip negative configuration)

 

           

NAME             TRS-80 Model 100 / 102

MANUFACTURER    Tandy Radio Shack

TYPE  Home Computer

ORIGIN          U.S.A.

YEAR              1983

BUILT IN LANGUAGE          Enhanced version of Microsoft BASIC

KEYBOARD  Full-size typewriter style keyboard

8 function keys

CPU    Intel 80c85 (code and pin compatible with 8085)

SPEED            3 MHz

RAM  8 kb, up to 32 KB (29638 bytes free)

by incremental 8 kb RAM pack on PCB

ROM  32 kb (up to 64 kb)

TEXT MODES            40 x 8 (LCD screen)

GRAPHIC MODES    240 x 64 (Full-Dot matrix)

COLORS        monochrome

SOUND          Beeper

SIZE / WEIGHT          30 (w) x 21.5 (D) x 4.5 (H) cm.

I/O PORTS      Centronics

Tape

Bar Code

RS232

Phone

System Bus

BUILT IN MEDIA      User RAM battery backup

POWER SUPPLY       6v DC - 1.1 w or 4 x AA alkaline-manganese batteries

PERIPHERALS           Disk-drive

Printer

Acoustic modem