All things Texas Instruments computing.

Texas Instruments Device Benchmarks
Here is a note about diffences between TI BASICS
Hardware not covered in depth on this page? TI SR-50, TI-58, TI-58C, TI-59, TI-66, TI CC-40, TI-74, TI-80, TI-95

    
General TI-99 Info:

CPU:       16-bit TMS9900 @ 3 MHz 64-pin DIP 16-bit  for TI-99/4 and TI-99/4A
           16-bit TMS9995 @ 10 MHz for TI-99/8
           16-bit TMS9995 @ 12 Mhz for Geneve 9640
Memory	   16 KB Base RAM and Expandable to 16MB 
Graphics:  TMS9918A S-Video out 256×192 pixels with 32 sprites
Sound	   TMS9919, later SN94624 - 3 voices, 2 noise - 110 Hz to 115 kHz

            TI-99/4 |  TI-99/4A ♥ | TI-99/8      | Geneve 9640 | TI-99/22   .
CPU Speed | 3 Mhz   |  3 Mhz      | 10 MHz       | 12 MHz      |
RAM       | 16 KB   |  16 KB      | 64KB (16bit) | 640KB       | 32KB (16bit) 
Year      | 1979    |  1981       | 1983         | 1987        | 2022

TI-99 Programming

- TI BASIC and Extended BASIC manual - Part I

- TI BASIC and Extended BASIC manual - Part II with ASCII chart

- TI-99/4A Editor Assembler manual

Code:

- TI BASIC and TI Extended BASIC Code
- - Games [text and audio] Code
- - Utility Code

TI-99 Hardware:
- Want to make a drive or a 32k RAM expansion? Here is the pin out of the 44 pin side port for external memory and disk control.
- Creating your own game adapter!.Creating an game adapter for the Atari CX-30 Joystick, Sega Genesis game pad, ColecoVision Flashback Controller, and Atari Video Touch pad.
- Here is a Computer cassette tape drive replacement option. Using a modern computer as a WAV file server for the TI-99/4A (instead of cassette drive)
- Connecting a TI-99/4A to a HDMI or RCA S-Video TV/monitor
- Here is the Ti-99/4A cart pinout

The TI-81/TI-82/TI-85/TI-86
The first generation of Z80 Calculators.
CPU:      ZiLOG Z80 8-bit microprocessor

       | TI-81       | TI-85 ♥        | TI-82        | TI-86          _
Screen |96×64 pixels | 128x64 pixels  | 96×64 pixels | 128×64 pixels
CPU    |Zilog Z80    | Zilog Z80      | Zilog Z80    | Zilog Z80
Year   |1990         | 1992           | 1993         | 1996

TI-81/82 BASIC and TI-85/86 BASIC are different from each other while also being different from Z80 (TI-83) BASIC and 68K (TI-89) BASIC.
But TI-81/82 BASIC and TI-85/86 BASIC are closer to each other than the other BASICs.

- TI-81/82 BASIC

- TI-85/86 BASIC First modern powerful TI BASIC.

- Downloads
- DnD for TI-85
- Tetris plus for TI-85
- Tetris for TI-85

  
General TI-92 and 89 Info:  

CPU:      32-bit Motorola MC68000 
Display:  240×128 pixels for TI-92 series
          160×100 pixels for TI-89 series
          
Further Technical specifications
              TI-92  | TI-92II | TI-89  | TI-92 Plus ♥ | Voyage 200 | TI-89 Ti
CPU speed  |  10 MHz | 10 MHz  | 10 MHz | 12 MHz       | 12 MHz     | 16 Mhz
RAM        |  128 KB | 256 KB  | 256 KB | 256 KB       | 256 KB     | 256 KB
Flash ROM  |    1 MB |   1 MB  |   2 MB |   2 MB       |   4 MB     |   4 MB
Year       |    1995 |   1996  |   1998 |   1998       |   2002     |   2004

TI-92 and TI-89 Programming

- Modern TI-89/92 (68K series) BASIC

Downloads
- Doom.zip for TI-92
- doom89.zip for TI-92 plus or TI Voyage 200 Doom 89 Version 2.02 Screen shot 1 Screen shot 2
- Mario.zip for TI-92
- PacMan.zip
- PacMan89.zip - has 89 version and 92 version screen formats.

 
General TI-83/TI-84 Info:
The second Generation of Z80 Calculators.
CPU:      ZiLOG Z80 8-bit microprocessor

 
          |  TI-83        | TI-83 Plus ♥ | TI-84 Plus ♥  | TI-84 Plus SE ♥| TI-84 Plus C   | TI-84 Plus CE
CPU speed |  6 MHz        | 6 Mhz        | 15 MHz        | 15 MHz         | 15 MHz         | 48 MHz
screen    |  96×64 pixels | 96×64 pixels | 120x64 pixels | 120x64 pixels  | 320x240 pixels | 320x240 pixels 
          |  Mono         | Mono         | Mono          | Mono           | Color          | Color
year      |  1996         | 1999         | 2004          | 2004           | 2013           | 2015

Yes, you can programm and use all types of applications on your TI-84 plus.
There are several hundreds of games for this series of Calculators.

Downloads
Here is Jon's Tetris that works on this entire line very well

The TI-83/TI-84 Plus series supports three programming languages: TI-BASIC (Z80 version) , Z80 assembly, and the Axe language.

- My personal TI collection

- See how the TI-99/4A fits in the TI computer history timeline.

- See how the graphic Calculators fit in the TI history timeline.