TI-99/4 series

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TI-99 4A logo.png
TI-99/4 series
DesignerTexas Instruments
ManufacturerTexas Instruments
CPU3 MHz TMS9900
GraphicsTI-99/4A: TMS9918A VDC
RAM16 KB RAM
256 bytes scratchpad RAM
MediaROM cartridge
ReleaseTI-99/4: 1979
TI-99/4A: June 1981
Added to museumTI-99/4A: February 3, 2020
TI-99 4A.jpg

The TI-99/4 series consisted of two computers by Texas Instruments.

They used the TMS9900 CPU, clocked at 3 MHz, and were the first 16-bit computers released for the home market.

TI-99/4

The TI-99/4 was released in late 1979.

TI-99/4A

The TI-99/4A was released in June 1981. It was backward compatible with TI-99/4 titles. However, due to the improved graphics capabilities of the TMS9918A, not all TI-99/4A titles could be used on the TI-99/4.

Development

In 1977, two teams at Texas Instruments were working on two separate projects, a computer and a video game console. The two projects were merged into the TI-99/4 series.

TI-99/4 hardware owned by WEC Museum

Title Manufacturer Release Added to museum Notes
TI-99/4A Texas Instruments 1981 February 3, 2020 WEC Museum owns the system, two joysticks, box, quick setup guide, Beginner's Basic guide, reference guide, reference card, and video modulator manual.

TI-99/4 games owned by WEC Museum

Title Developer Release Added to museum Notes
Beginning Grammar Texas Instruments 1979 February 3, 2020 WEC Museum owns the cartridge and manual.
Blackjack & Poker Texas Instruments 1980 February 3, 2020 WEC Museum owns the cartridge.
Early Reading Scott, Foresman Electronic Publishing 1980 February 3, 2020 WEC Museum owns the cartridge.
Number Magic Texas Instruments 1979 February 3, 2020 WEC Museum owns the cartridge.

TI-99/4 applications owned by WEC Museum

Title Developer Release Added to museum Notes
Home Financial Decisions Texas Instruments 1979 February 3, 2020 WEC Museum owns the cartridge and manual.
Household Budget Management Texas Instruments 1979 February 3, 2020 WEC Museum owns the cartridge and manual.

TI-99/4A games owned by WEC Museum

Title Developer Release Added to museum Notes
Addition and Subtraction 1 Scott, Foresman Electronic Publishing 1981 February 3, 2020 WEC Museum owns the cartridge.
Addition and Subtraction 2 Scott, Foresman Electronic Publishing 1981 February 3, 2020 WEC Museum owns the cartridge.
Adventure Adventure International 1981 February 3, 2020 Rebranded Pirate Adventure.
WEC Museum owns the cartridge and manual.
Alpiner Texas Instruments 1982 February 3, 2020 WEC Museum owns the cartridge and manual.
The Attack Milton Bradley 1981 February 3, 2020 WEC Museum owns the cartridge and manual.
BurgerTime Data East 1983 February 3, 2020 WEC Museum owns the cartridge and manual.
Car Wars Texas Instruments 1981 February 3, 2020 WEC Museum owns the cartridge and manual.
Division 1 Scott, Foresman Electronic Publishing 1982 February 3, 2020 WEC Museum owns the cartridge.
Donkey Kong Nintendo 1983 February 3, 2020 WEC Museum owns the cartridge.
Hopper Texas Instruments 1984 February 3, 2020 WEC Museum owns the cartridge and manual.
Milliken Math Sequences: Integers Milliken Software Publishing 1982 February 3, 2020 WEC Museum owns the cartridge and manual.
Multiplication 1 Scott, Foresman Electronic Publishing 1981 February 3, 2020 WEC Museum owns the cartridge.
Munchman Texas Instruments 1982 February 3, 2020 WEC Museum owns the cartridge and manual.
Parsec Texas Instruments 1982 February 3, 2020 WEC Museum owns the cartridge and manual.
TI Invaders Texas Instruments 1981 February 3, 2020 WEC Museum owns the cartridge and manual.
Tombstone City: 21st Century Texas Instruments 1981 February 3, 2020 WEC Museum owns the cartridge and manual.
Tunnels of Doom Texas Instruments 1982 February 3, 2020 WEC Museum owns the cartridge and manual.
Video Chess Texas Instruments 1982 February 3, 2020 WEC Museum owns the cartridge.

TI-99/4A applications owned by WEC Museum

Title Developer Release Added to museum Notes
Disk Manager 2 Texas Instruments 1982 February 3, 2020 Floppy disk utilities.
WEC Museum owns the cartridge.
Microsoft Multiplan Microsoft 1982 February 3, 2020 WEC Museum owns the cartridge.
Personal Record Keeping Texas Instruments 1982 February 3, 2020 WEC Museum owns the cartridge and manual.
Terminal Emulator II Texas Instruments 1982 February 3, 2020 WEC Museum owns the cartridge.
TI-Writer Word Processor Texas Instruments 1982 February 3, 2020 WEC Museum owns the cartridge and manual.

TI-99/4 periodicals owned by WEC Museum

Title Publisher Release Added to museum Notes
99'er Home Computer Magazine
Home Computer Magazine
Emerald Valley Publishing November 1983
June 1984
May 8, 2020
May 8, 2020
It began as 99'er Magazine in May 1981. The title changed to 99'er Home Computer Magazine in February 1983. The title changed to Home Computer Magazine in May 1984.
Enthusiast 99 International 99/4 Users Group May 1983 February 3, 2020
Texas Instruments Home Computer Newsletter Texas Instruments April 1983
July 1983
Summer 1983
September 1983
Winter 1984
February 3, 2020
May 8, 2020
May 8, 2020
May 8, 2020
May 8, 2020