Files
website/content/museum/texas-instruments-computer-99-8.md
T
yann64andClaude Opus 5.5 3eeabe9649 Full content from the completed page crawl (media download still running)
6,654 pages: 1,289 machines, 702 software, 460 companies, 64 history, 17 articles, 59 fun.
4,336 media files so far; references to files not downloaded yet are left out.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
2026-10-12 07:55:22 +02:00

10 KiB

title, categories, types, origins, years, cpus, params
title categories types origins years cpus params
Texas Instruments Computer 99/8
Computers
Home Computer
U.S.A.
1983
TI TMS 9995
name company company_name specs tabs photos emulators links docs videos comments related oc_id source
Computer 99/8 /companies/texas-instruments Texas Instruments
label value
NAME Computer 99/8
label value
MANUFACTURER Texas Instruments
label value
TYPE Home Computer
label value
ORIGIN U.S.A.
label value
YEAR 1983
label value
END OF PRODUCTION 1983
label value
BUILT IN LANGUAGE TI Extended Basic II
label value
KEYBOARD QWERTY full-stroke keyboard, 54 keys
label value
CPU TI TMS 9995
label value
SPEED 10,7 MHZ
label value
CO-PROCESSOR TMS 9918A (Video Generator)
label value
RAM 64 kb (up to 15Mb !)\ 61 kb free with Basic
label value
VRAM 16 kb
label value
ROM 220 Kb
label value
TEXT MODES 32 x 24 (16 colors) / 40 x 24 (2 colors)
label value
GRAPHIC MODES 64 x 48 (with 4x4 graphic symbols), 256 x 128 (16 colors), 256 x 192 (16 colors)
label value
COLORS 16
label value
SOUND 3 channels & 5 octaves, speech synthesizer built-in
label value
I/O PORTS Tape, RGB video out (DIN), Joystick, HexBus connector, Expansion port (16 bits), Cartridge slot (GROM port)
label value
OS P-System
label value
PRICE planned for 600$
photos
emulators
links
docs
videos
title subtitle text image
KEYBOARD/LABEL null
title url platform text
Mess emulator http://www.mess.org MS DOS Emulates all of the TI-99 versions, including the Geneve card
title url platform text
PC99 http://pw2.netcom.com/~mjmw/index.html MS DOS Quality emulator for the TI 99/4A
title url platform text
Classic99 http://www.harmlesslion.com/software/Classic99 Windows Open Source & freeware TI-99/4A emulator for Windows 9x
title url platform text
Win994a http://www.99er.net/win994a.shtml Windows Win994a is a TI-99/4A simulator written by Cory Burr that installs and runs in Windows
title url platform text
MacV9T9 official homepage http://perso.club-internet.fr/pytheas/english/MacV9T9.html Apple MacV9T9 is a TI99 emulator for the Macintosh
title url text
planet-99.net http://www.planet-99.net/ Lots and Lots of 4A software on this site. Disks, Cartridges, Articles - the lot!
title url text
Somtimes http://sometimes.99er.net/ Demo cartridges
title url text
TI-99 4/A Forever ! http://www.ti99.com Excellent site with special pages about the Computer 99/8
title url text
TI-99 4/A Webring http://e.webring.com/hub?ring=ti994a You know what it is ;-)
title url text
TI-99 Forever ! http://www.ti99.com Excellent site by Fabrice Montupet
title url text
TI-99/4 Home Page at 99er.Net http://www.99er.net/ THE us site to visit !
title url text
Web Wiz CAPTCHA http://www.webwizcaptcha.com Discussion about Texas Instruments computers
title url cover text
USER'S REFERENCE GUIDE http://www.classiccmp.org/dunfield/ti/index.htm null [**USER'S REFERENCE GUIDE**](http://www.classiccmp.org/dunfield/ti/index.htm)written by Texas Instruments  compiled/archived by Dave Dunfield\  type of document : PDF\  source : [Daves Old Computers](http://www.classiccmp.org/dunfield/)
title url cover text
BEGINNER'S BASIC http://www.classiccmp.org/dunfield/ti/index.htm null [**BEGINNER'S BASIC**](http://www.classiccmp.org/dunfield/ti/index.htm)written by Texas Instruments  compiled/archived by Dave Dunfield\  type of document : PDF\  source : [Daves Old Computers](http://www.classiccmp.org/dunfield/)
title url cover text
BASIC REFERENCE CARD http://www.classiccmp.org/dunfield/ti/index.htm null [**BASIC REFERENCE CARD**](http://www.classiccmp.org/dunfield/ti/index.htm)written by Texas Instruments  compiled/archived by Dave Dunfield\  type of document : PDF\  source : [Daves Old Computers](http://www.classiccmp.org/dunfield/)
title url cover text
GETTING STARTED WITH THE TEXAS INSTRUMENTS TI99/4A http://shawweb.myzen.co.uk/stephen/book.htm /media/museum/docs/couvs/vide.gif [**GETTING STARTED WITH THE TEXAS INSTRUMENTS TI99/4A**](http://shawweb.myzen.co.uk/stephen/book.htm)written by Stephen Shaw  compiled/archived by Stephen Shaw\  type of document : HTML\  source : [Stephen's Main Web Page](http://shawweb.myzen.co.uk/stephen)
title url cover text
PROGRAMMING DISCOVERY IN TI BASIC STUDENT GUIDE http://www.99er.net/docs.html null [**PROGRAMMING DISCOVERY IN TI BASIC STUDENT GUIDE**](http://www.99er.net/docs.html)written by Texas Instruments Computer Advantage Club  compiled/archived by Rich at www.99er.net\  type of document : Unknown\  source : [TI-99/4A Home Computer Page](http://www.99er.net/)
title url cover text
TI-99/4A CONSOLE & PERIPHERAL EXPANSION SYSTEM TECHNICAL DATA http://www.99er.net/docs.html null [**TI-99/4A CONSOLE & PERIPHERAL EXPANSION SYSTEM TECHNICAL DATA**](http://www.99er.net/docs.html)written by Texas Instruments  type of document : PDF\  source : [TI-99/4A Home Computer Page](http://www.99er.net/)
title url cover text
SPEECH SYNTHESIZER MANUAL http://www.99er.net/docs.html null [**SPEECH SYNTHESIZER MANUAL**](http://www.99er.net/docs.html)written by Texas Instruments  type of document : PDF\  source : [TI-99/4A Home Computer Page](http://www.99er.net/)
title url cover text
DISK MEMORY SYSTEM MANUAL http://www.99er.net/docs.html null [**DISK MEMORY SYSTEM MANUAL**](http://www.99er.net/docs.html)written by Texas Instruments  compiled/archived by Rich at www.99er.net\  type of document : Unknown\  source : [TI-99/4A Home Computer Page](http://www.99er.net/)
title url cover text
RS232 INTERFACE CARD MANUAL http://www.99er.net/docs.html null [**RS232 INTERFACE CARD MANUAL**](http://www.99er.net/docs.html)written by Texas Instruments  compiled/archived by Rich at www.99er.net\  type of document : Unknown\  source : [TI-99/4A Home Computer Page](http://www.99er.net/)
title url cover text
DATA RECORDER MANUAL http://www.99er.net/docs.html null [**DATA RECORDER MANUAL**](http://www.99er.net/docs.html)written by Texas Instruments  compiled/archived by Rich at www.99er.net\  type of document : PDF\  source : [TI-99/4A Home Computer Page](http://www.99er.net/)
title url text
TV commercial featuring Bill Cosby https://www.youtube.com/watch?v=OhsgvW9P7tI Length: 30 s
author date text
Andy (USA) Wednesday 17th June 2015 The Myarc Geneve was not a "clone" of the 99/8. It used the same CPU, but absent were the Hex Bux interface, built-in speech, and the built-in USCD Pascal system. It also used a totally different operating system. People have compared it to the 99/8 but it''s in no way a "clone" of the 99/8.
author date text
frank (us) Monday 30th July 2012 http://montreal.kijiji.ca/c-acheter-et-vendre-ordinateurs-Texas-Instruments-Computer-99-8-W0QQAdIdZ400504807
author date text
Stephen Boutillette Tuesday 8th November 2011 Dan you are right. I knew a few members of the North Jersey TI Users club that had them. Myarc was based in Basking Ridge, NJ and it was called the Geneve. Some used the PE box or a PC case to hose the parts. I know that at least one was still in use in the late 1990s.
author date text
Dan Cochran (Leesport, PA) Friday 2nd September 2011 If I remember right, a company called Myarc produced a clone of this computer. I never saw one in person, but I saw ads for it in a TI-oriented magazine.
author date text
Alice Myers (Washington) Friday 7th July 2006 The codename for the 99/8 was indeed the Armadillo. My memory is that it was virtually ready for production when marketing studies determined that the price-point they would be able to be sold for was lower than the cost of making them. If I remember correctly, competitors were pricing so low that everybody was probably losing money with each computer sold. I suspect the mind-set was "the last company to run out of money will be the winner."
/museum/texas-instruments-ti-99-2
/museum/texas-instruments-ti-99-4a
/museum/texas-instruments-ti-99-4a-beige
268
url date
https://web.archive.org/web/20230606203013/http://www.old-computers.com/museum/computer.asp?c=268 2023-06-06

The 99/8 was intended as an upmarket companion to the TI 99/4A . Something like a small business computer. However, at TI they didn't think it would generate any income, so it was never released.

It has built-in features which were optional in the 4A : The speech synthesiser and the Pascal UCSD ROM card. It is a prototype computer and was never marketed.


Very interesting information from CC Clarke
As a young electronic technician at TI, I labored in the "trenches" during the Home Computer Wars of the early eighties. It was brutal. Our 99/4A was technologically superior to the Comodore 64, but was marketed against the VIC 20 in price.
The 99/8 (codenamed: Roadrunner) was supposed to remedy that situation. It was more advanced, cheaper to produce, (the bottom line was ALWAYs the decisive factor in corporate decision-making) and used the existing TI HexBus interface, touted as the emerging interface standard at TI.
Unfortunately, TI got a very bloody nose when it voluntarily recalled thousands of 99/4A AC transformers due to a perceived fusing issue.

Thousands of 99/8s were built and warehoused (before being destroyed) after it was discovered they couldn't meet FCC EMI specs without expensive design changes.
In 1982/83, TI was losing more money in their Lubbock Consumer Products Division than they could justify. and the 99/8's problems made it cheaper to bury than bring to market. A few escaped and are considered collector's items.