Spectravideo (SVI) produce a range of Z80 based computers running a powerful version of Microsoft Basic and utilising the Texas Instruments range of graphics processors with their own dedicated memory.

The early SVI machines were a precursor to the MSX compatible machines for a multitude of Japanese manufacturers that followed later.  They are very similar, but some subtle changes made them incompatible with the MSX software that followed:

There were two primary models:

SVI-318 - Aimed at the entry level market, with a rubber keyboard and an inbuilt joystick.

SVI-328 - Aimed more at the small business market this machine came with more memory and a proper keyboard.

Brought out by Texas Instruments, and my first personal computer (TI-99/4), it was a well built machine, with a lot of hardware and software support.  It had a reasonable presence in Australia, with quite a good following.