► Welcome to 99er.net

Welcome to The TI-99/4A Home Computer Page — one of the web's longest-running resources dedicated to Texas Instruments' classic 1980s home computer. Whether you're a longtime TI enthusiast or just discovering the 99/4A, you'll find emulators, documentation, downloads, community links, and more.

The site has been online since 1996 and continues to grow thanks to the dedicated TI-99/4A community. Explore the archive, check the latest news, or jump right into the file archive.

- Rich

TI-99/4A Screen Shots
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Latest Updates

Site Updates

After many years, you may notice this site has a fresh new look. The updates go beyond just the landing page — I've made improvements throughout, including behind-the-scenes backend security upgrades. Those changes did break some existing scripts, most notably the file download and link databases, which I've since rebuilt from the ground up.


As I've been restoring files to the download database, I've also taken the opportunity to clean up and improve many of the document scans. This is an ongoing effort, and I'll continue working through any broken or outdated sections as time allows.

Posted on Mar 28 2026 by Rich
XB Game Developers Package Updated
Harry Wilhelm has updated his XB Game Developers Package. The software allows you to create arcade quality games in Extended Basic.

It is available in the 99er.net download database:

XBGame Developers Package

Posted on Aug 30 2018 by Rich
Using A Gotek Floppy Drive Emulator with HxC on the TI-99/4A - Part 2
I've posted part 2 of my article on using the Gotek floppy drive emulator on a TI. I provide details on adding an LCD display to the Gotek as well as a 3rd selection button.

-Using A Gotek Floppy Drive Emulator with HxC on the TI-99/4A - Part 2

Posted on Jul 18 2016 by Rich
Cleaned Up/New TI Manual Uploads
I uploaded 3 documents today-the monitor manual, the modulator manual, and the joystick manual. I first checked the files...
Posted on Feb 24 2016 by Rich
New Documents
I've scanned and uploaded some documents that I recently bought. The scans have all been cleaned up and OCR'd so that the PDFs are searchable:

-Text To Speech - TI Draft Copy
-Munchman II Manual (Already available, but this is a cleaner copy)
-Terminal Emulator II Manual - TI Draft Copy
-Miniwriter II Manual

Happy Holidays!
Rich

Posted on Dec 08 2015 by Rich
Floppy Days Podcast - TI99 History Episode
Randy Kindig, host of the vintage computing podcast Floppy Days, has spoken with several of us for a series of planned episodes about TI-99 computers. The first show is out now - Randy interviews Jim Fetzner and Mark Wills about the history of the computers. It's a great listen, so check it out: Floppy Days Podcast -TI-99/4A History
Posted on Nov 21 2015 by Rich
CC40 Updates and Scans
The CC40 Page has been updated, and some document scans have been added:

-The 'Guide to Programming the CC40' referenced on the CC40 page had been scanned and is available as a PDF.
-The CC40 User's Guide that has been available as a download for some time now has been cleaned up quite a bit. Each PDF page used to have two facing pages from the guide, but they have now been split so that each page from the book is now on a separate PDF page. Pages have been rotated 90 degrees clockwise and also de-skewed so that they can be read more easily on a computer screen, and I also cleaned up the pages quite a bit by removing specks and other junk.

Links to download the PDFs can be found on the CC40 page, or you can find them in the book/manual sections of the 99er Download Database.

Posted on Jul 12 2015 by Rich
Miniature 3D Printed TI-99/4A
Rabbit EngineeirngRabbit Engineering makes these awesome miniature TI-994/A consoles on a 3D printer. If you're lucky enough to have a 3D printer, you can download the files to make your own. If not, you can follow the link to their Etsy store and buy one that's all painted and ready.

Rabbit Engineering on Thingverse

Posted on Apr 23 2015 by Rich
TI-99 Database / File Dump
I've started building a database of TI99 hardware, software and literature. You can read a little more about it in the forum, and you can check it out at: ti99db.99er.net.

I've created a sort of 'file dump' at as a place to quickly upload files before I get around to adding them to the regular download section with a full description, file info, etc. The file dump has minimal descriptions (if any), but the filenames should give you an idea of what they are. Right now, it's all manual scans in pdf, and Win994a floppy images. The images in the 'Micropendium' directory are all disks that I received from John Kohler of Micropendium after the magazine shut down. The file dump can be found at : www.99er.net/filedb.

Posted on Mar 11 2015 by Rich
New TI99 Newsletter - Shift838
There is a new newsletter out for the TI-99 from Chris Schneider. Visit his Shift838 website to sign up, and download a PDF copy of the first newsletter from the WHTECH FTP site.
Posted on Jan 17 2015 by Rich

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