Spectravideo started out as 'Spectravision', a software company.
Gradually they started to produce their own Z80 based machines like the SV318
and SV328. They also produced a series of MSX based machines and are still in
existence today selling 'Logic3' branded peripherals like joysticks and steering
wheels. More bumf here as I find it, and pix as soon as I find the digicam!
SV328 MkII, billed as having '80K RAM' but that's fibs - it's really only a 48K machine since 32K of that is the ROM :)