1985 (July)
Initially sold for ¥99,800
The Yamaha YIS604/128 home personal computer is an MSX2 machine aimed at the Japanese home computer market. It shares the same chassis of the Yamaha YIS503II and is basically a CX7M/128 without any modules preinstalled in the side expansion slot. Comes with 128kb of RAM and 128kb of VRAM (hence the name) with a better graphics output enjoying all the extra functionalities that were possible with MSX2.