All files are in .PDF or .TXT format unless otherwise specified.
Move down the page to see the TI99/4 & TI99/4a, Geneve, PSystem, TI99/8, TI99/2, Tomy Tutor, MBX and Cortex documents available here.
TI99/4a Documents
These documents for the TI99/4 and TI99/4a computers. They are divided in separate categories according to type. Many of the documents will also pertain to the other family of 9900 based computers on this list.
Here are documents for software like TIartist, TIBase, TIwriter and MS Multiplan and many, many more.
Books on programming languages, Compute! books, David Ahl and many, many more.
Catalogues from Asgard, Tenex, Texaments and more.
Programming Languages such as various Extended BASICs, Assembler, C, Logo and many more.
Educational software from TI, Milken, Schoolastic, Plato and many more.
Games are divided into four sections:
Currently there are about 350+ games available.
This is the documents that covers the various types of hardware for TI99 computers and it’s accessories.
Magazines from the 99er, Compute! and newsletters from IUG, Tigerclub and more.
General TI information such as PHD, PHM list and more.
User guides for the TI99 computer such as Beginning Programming and the Reference guide.
Utility programs like 4aDOS, Disk Manger 2000, Terminal Emulator II and more.
Other 9900
Here are documents for the Geneve, TI99/8, TI99/2, MBX, PSystem, Tomy Tutor and Cortex systems.
Documentation specific to the Myarc Geneve 9640 computer. The Geneve was a complete computer on a card that was to be set in the TI PEB. With faster processor, more memory, 80 column text and higher graphics it was quite the upgrade from the TI99/4a.
Documentation for the never released TI99/8 computer. The 99/8 was to be an upgrade for the TI99/4a with more memory, speed and built in XB. Note: many of the documents for the 99/8 and 99/2 are still in beta form but usable.
Documents for the also never released TI99/2. The 99/2 was a b/w, 4k low cost computer with no sound to compete with the TS1000.
Documents for the P-Card PSystem. The P-card was a card for the PEB that turned the TI99/4a into a PSystem computer. This was a whole different computer system that made the TI99 compatible with other PSystem computer but not compatible with the standard TI99 software.
Documents for the Milton Bradley MBX game system. A very advanced game system add-on for the TI99/4a. The MBX had it’s own keyboard, voice activated commands and own set of Milton Bradley game cartridges that used the advanced features.
Cortex
The Powertran Cortex was a 16 Bit Computer that appeared as a construction project in Electronics Today International (ETI) magazine in 1982, 83. It started out life as a design of TI-UK engineers who found themselves in conflict with TI. So the solution was to have it published in ETI and have kits from Powertran.
Main Source: http://www.powertrancortex.com/index.html
Documents for the Tomy Tutor computer. The Tutor was a computer system based around the 9900. A Cassette based system with it’s own BASIC and game cartridges. Known as the Pyuta in Japan and Grandstand Tutor in the UK.
Internet Databases of TI99 Books and manuals
https://pixelpedant.com/ – Pixel has a nice collection of obscure manuals, catalogues and other media.
http://www.hexbus.com/tibooks/ – There are many other things on this site but the book collection is just awesome!
https://archive.org/details/tibooks – Another impressive book collection, this time from archive.org
TI99RESOURCES 
