Tandy TRS-80 Model 100
| Tandy TRS-80 Model 100 | |
|---|---|
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| developer | Kyocera , Tandy RadioShack , Microsoft |
| Manufacturer | Kyocera |
| Sales start | 1983 |
| Technical specifications | |
| Mass storage | RAM / Casette |
| processor | Intel 80C85 8 bit, CMOS, 2.4 MHz |
| random access memory | 8, 16, 24 or 32 KiB RAM |
| screen |
LC display 8 × 40 characters 240 × 64 pixels |
| Connectivity | |
|
connections |
RS-232, printer, cassette, modem, bar code reader |
| battery pack | |
| Type | 4 AA batteries |
|
Duration (according to the manufacturer) |
Max. 20 hours |
| measures and weight | |
| Dimensions (H × W × D) | 45 mm × 300 mm × 215 mm |
| Weight | 1.36 kg |
The 1983 TRS-80 Model 100 from electronics retailer Tandy RadioShack , along with the Olivetti M-10, NEC PC-8201 and NEC PC-8300, were part of a family of portable computers based on the Kyotronic 85 platform from Kyocera . The design with an economical CMOS processor 8085 and static CMOS RAM (8–32 KiB) enabled an operating time of up to 20 hours with 4 AA batteries. The device was particularly popular among journalists because of its built-in 300 baud modem and the word processor it contained. Over 6 million pieces have been sold worldwide.
equipment
Various extensions were offered for the Model 100:
- Video and floppy disk extension DVI1 (26-3806) with one or two 5¼-inch drives (formatted capacity 180 KiB) and 80 × 25 text display
- Portable Disk Drive TPDD (26-3808), a 3½-inch drive (formatted capacity 90 KiB), connected via the serial interface
- Portable Disk Drive 2 TPDD2 (26-3814), double capacity (180 KiB)
- TRS-80 Acoustic Coupler for use with Model 100 (26-3805), a special loudspeaker / microphone combination for use as a coupler
- Model 100 8K RAM Expansion (26-3816), memory expansion by 8 KiB up to a maximum of 32 KiB
- Bar Code Wand (26-1183), a barcode reading pen
- Thermal Ribon Printer TRP-100 (26-1275), a thermal printer for mains-independent use with batteries
There was also the possibility of installing additional software in the form of an option ROM. Only one ROM could be installed at a time.
- Multiplan (26-3829), spreadsheet from Microsoft
- Interactive Solutions (26-3844), a combination of a word processor, a database and a spreadsheet from DCM data products
Various Tandy peripheral devices, especially from the home computer sector, such as the 4-color plotter CGP-115 or the cassette recorder CCR-82, were offered in special versions for the Model 100. Usually, however, the adjustments were limited to a color scheme in white with black decorative lines, matching the Model 100.
Further development
In 1984 the Tandy 200 was introduced as an expanded version of the Model 100. Largely compatible, it offered a display twice as large (16 × 40 characters) and a memory expansion of up to 72 KiB, organized as 3 banks with 24 KiB each. On the software side, Multiplan was added as a spreadsheet.
In October 1985 the Tandy 600 was presented as the last development with its own structure and software in ROM. Later devices were commercially available IBM-compatible laptops. It was no longer based on the Kyocera design, but used an 80C88 (3.07 MHz) and Microsoft's handheld DOS (HHDOS). The Tandy 600 offered 32-224 KiB of battery-buffered RAM and a 3½ inch floppy disk drive in standard MS-DOS format. BASIC was no longer part of the basic equipment, but a BASIC ROM could be installed instead of the Multiplan ROM.
The Model 102 replaced the Model 100 in 1986 and differed from it only in a flatter case, a basic configuration of 32 KiB RAM and some bug fixes in the ROM.
Trivia
- The N82 version of Microsoft BASIC 80 in the Model 100 firmware was the last Microsoft product that Bill Gates personally developed together with Jay Suzuki .
- In the file system there are two invisible files called "Hayashi" and "Suzuki" and a deleted file called "RickY", which the developers Junji Hayashi, Jay Suzuki and Rick Yamashita immortalize.
- The calculator has a year 2000 problem : The main menu always shows the current year. This display was set to 19XX at the factory , so that the years from 2000 onwards are not displayed correctly. There are solutions to this problem on the Internet.
- The device was involved in the Chaos Computer Club's BTX hack because its motor relay was used to periodically press a button on the BTX terminal.
Web links
- Extensive tabular information on the Model 100: TRS-80 Computers: Model 100. Accessed April 3, 2018 (English).
- Pictures of the individual members of the Kyotronic family as well as documents: Dave Dunfield: Daves Old Computers - TRS-80 / Tandy 100/102/200, NEC 8201/8300. February 28, 2008, accessed April 3, 2018 .
- Model T Doc Wiki
- Comparison on Oldcomputers.net: Kyotronic clones. Retrieved May 17, 2015 .
- Virtual T - An open source emulator for the Tandy 100/102/200 series
Individual evidence
- ↑ Ron Hopkins-Lutz: The Kyocera FAQ. August 3, 1997, accessed April 3, 2018 .
- ↑ Owen W. Linzmayer: Tandy Model 200. In: CREATIVE COMPUTING VOL. 11, NO. March 3 , 1985, p. 64 , accessed May 17, 2015 (English).
- ↑ THE TANDY 600 FAQ - VERSION 3.0.5. (No longer available online.) May 26, 2008, archived from the original on October 13, 2008 ; accessed on May 17, 2015 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
