Texas Instruments - TI99/4A Computer - 1981 - Back in action.

Texas Instruments TI99/4A Computer.

NAME TI 99 / 4A
MANUFACTURER Texas Instruments
TYPE Home Computer
ORIGIN U.S.A.
YEAR 1981
END OF PRODUCTION 1984
BUILT IN LANGUAGE TI Basic
KEYBOARD QWERTY full-stroke keyboard, 48 keys
2 x SHIFT, CTRL, ALPHA LOCK, FCTN
CPU TI TMS 9900 (with 256 bytes 'cache', actually it accesses to 256 bytes of RAM)
SPEED 3,3 MHz
CO-PROCESSOR TMS 9918 (TMS 9929 in Europe) - Video / Sprite
RAM 16 KB - Memory expansion card can be added : 4 KB or 32 KB (up to 52 KB)
VRAM 16 KB
ROM 26 KB : 8 KB ROM connected to the CPU + 18 KB ROM in byte-serial bit-mapped circuits
TEXT MODES 32 x 24 (16 colors), 40 x 24 (2 colors)
GRAPHIC MODES Multicolor mode : 48 x 64 with 16 colors
256 x 192 with 16 colors (only accesed via machine code)
Sprites (only with TI-Extended Basic)
COLORS 16
SOUND 3 channels, 5 octaves (110hz to 55khz) and 1 noise channel (periodic and white)

Thanks for supporting this channel:

[t-systemsgmbh]

used to have the beige one, inox is much better. good thinking to "modify" and diy cable using the part of the modulator, thumbs up!