TI-99/4

TI-99/4 series
Designer	Texas Instruments
Manufacturer	Texas Instruments
CPU	3 MHz TMS9900
Graphics	TI-99/4A: TMS9918A VDC
Memory	16 KB RAM 256 bytes scratchpad RAM
Media	ROM cartridge
Released	TI-99/4: 1979 TI-99/4A: June 1981
Added to Museum	TI-99/4A: February 3, 2020

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 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	1982	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	Micorosoft	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, then 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