Models
The PC Engine.
Released on 30/10/1987 in Japan.
The TurboGrafx-16.
Released on 29/08/1989 in America, 22/11/1989 in France and 1990 in the UK and Spain.
Motherboard
Motherboard
Showing the TurboGrafx's motherboard.
The PC Engine one was considerably smaller and stacked.
Motherboard with important parts labelled
Diagram
Main architecture diagram
Looks pretty simple, huh?