1981
TI-99/4A
- Released
- June 1981
- CPU
- 16-bit TMS9900 at 3 MHz
- Memory
- 256 bytes of scratchpad RAM and 16K of video RAM; official 32K RAM expansion available
- ROM
- 8K system ROM and 18K GPL GROM
- Text
- 40×24 text mode; 32×24 character-based graphics mode
- Graphics
- TMS9918A/TMS9929A; 256×192 bitmap and 64×48 multicolour modes; 16 colours and 32 sprites
- Sound
- TMS9919 or SN94624: three tone voices and one noise channel
- Storage
- ROM cartridge and cassette; 5.25-inch floppy disk through the Peripheral Expansion System
A 16-bit home computer constrained by an 8-bit peripheral bus and a tightly controlled software environment.