View Full Version : Looking for more information on my TI-99/4A

August 29th, 2015, 05:30 PM

I just acquired a TI-99/4A complete with several cartridges and the speech synthesizer. Also my friend gave me the expansion chassis for it so I have a really NICE setup now.

I was wondering a couple of things: Was there ever a port of Joust to the platform? and secondly, what would it take to add a second floppy disk drive to the system from the expansion chassis? is it just a second Shugart drive in a case??? Looks like that you could just run the data cable to the 2nd drive from the controller, but I do not currently have a manual for the expansion chassis, so any information is appreciated.

Also wondering where is a good source (other than eBay) to find cartridges. I am very impressed with the system so far and never owned one until now.

Thanks in advance for any help!


August 29th, 2015, 08:27 PM
Here is an excellent forum who's members will answer any questions you may have as well as having a lot of books in pdf form and other resources that may be useful to you.

August 29th, 2015, 08:39 PM
Yes, with the standard TI disk controller you can have up to three "shugart" interface compatible drives such as those commonly found in IBM PCs. If the expansion box has one full height drive, you can replace it with two half heights or you can use an external disk enclosure attached to the external connector. It is even possible to use it with 3.5" drives, although that controller is limited to single-density (FM encoding).

August 31st, 2015, 12:29 PM
I don't use it much, but here is my system, three drives some RAM expansion:


More pics


September 3rd, 2015, 04:17 AM
Joust was in development for the TI-99/4A by Atarisoft and also announced, but never released. Afaik not even a prototype ever surfaced.