The PC Engine Duo / Turbo-Duo combined the add-on into the unit with more RAM as yet another failed attempt to relaunch the failing console in the West. The joint venture, formed in North America as TTI, made an add-on called the PC Engine CD ( PCE-CD) / TurboGrafx-CD ( TG-CD) that loaded games from discs instead, much like the Sega CD but better supported. The European versions varied throughout the countries, being the western version in Spain and United Kingdom and Japanese models in Benelux regions. When it came time to seek other potential markets, the two companies eventually caved to a limited American release in 1989 under a completely different model and name: the TurboGrafx-16.
The CPU was teamed up with a 16-bit graphics processor and 16-bit video color encoder chip, both built by Hudson Soft. It had a Hudson Soft HuC6280 8-bit CPU at 7.16 MHz and 1.79 MHz with 8KB of RAM and 64KB of VRAM. The PC Engine ( PCE) was an 8-bit system released jointly by NEC and Hudson Soft in Japan on Octoand in the US on August 29, 1989.
