Download PC-software ti99hdx version 9.1a now

Ti99Hdx is a PC program which is capable to communicate with a TI99/4A or Geneve computer over a serial connection (TI RS232/2 interface or own build) or a parallel connection (Cf7a+ interface).

Ti99Hdx can handle TI files in the V9T9 and TIFILES file format. All files are stored in a pre-defined directory on the hard disk of the PC. It is also possible to make use of subdirectories in this pre-defined directory. For the TI99/4A point of view it looks like as if a hard disk is connected.

Ti99Hdx can be used with any module or program that uses the standard TI99 file IO, like: TI Basic, TI Extended Basic, E/A or Dm2k.

Since Ti99Hdx version 9.1a a menu option is available to determine how files are send to the TI99:

• Unsorted (file system dependend)
• Sorted case sensitive
• Sorted file names before directory names
• Sorted directory names before file names
• Sorted by file type

Also a maximum of 127 file names and 114 direcory names are send over to the TI when reading the HDX1. directory. These maximums are the TI99 file system default and this prevents your diskmanager of choice from entering never never land (this all depends on the robustness of the diskmanager used). Also a better sanity check is added to be sure it is really a file conform the V9T9 or TIFILES format.


If a file "HDX1.PRINTER" is opened any data printed to this file will be send via a software connection to the Ti99Print program. This program will send received data to the default Windows printer.

If file is opened as "HDX1.TIME" then it is possible to read the PC's time and date like so:

100 OPEN #1:"HDX1.TIME",INTERNAL,FIXED 110 INPUT #1:SEC$,MIN$,HOUR$,DAY$,MONTH$,YEAR$,DAYOFWEEK$ 120 CLOSE #1

Printing to the HDX1.TIME file is ignored.