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All things Texas Instruments computing.
General TI-99/4A Info:
CPU: 16-bit TMS9900 @ 3 MHz 64-pin DIP
Memory 16 KB Base RAM and Expandable to 16MB
Graphics: TMS9918A S-Video out
Sound TMS9919, later SN94624 - 3 voices, 2 noise - 110 Hz to 115 kHz
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
More information on the TI-99/4A
Code:
- TI BASIC and TI Extended BASIC Code
- - Games [text and audio] Code
- - Utility Code
TI-99 Hardware:
- How can I use 16-bit computer hardware that was from 1981? "There is a hack for that"
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- 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 is cheaper than purchasing and easy!
- 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 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
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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
More information on the TI-92 Series
General TI-84 Info:
CPU: ZiLOG Z80 8-bit microprocessor
Display:
TI-84 Plus | TI-84 Plus SE |
CPU speed | 15 MHz | 15 MHz |
RAM | 1 M | 2 M |
year | 2004 | 2004 |
Additionally, I have two TI-84 plus my programmable TI-84 Plus and Silver Edition Plus - both with USB interfaces. The biggest difference is the Silver Edition has twice the memory.
Yes, you can programm and use all types of applications on your TI-84 plus. Yes, you can play Doom on your TI-84 Plus also!
Here is a video on how to load applications and games to your TI-84. Yes, they can even play gameBoy games on your TI-84 plus.
https://www.youtube.com/watch?v=dSmIj94TnVo
https://www.youtube.com/watch?v=xsxinFch6Jk
The 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.