Models
The original PlayStation.
Released on 03/12/1994 in Japan, 09/09/1995 in North America, 29/09/1995 in Europe.
The PS One (slim revision).
Released on 07/07/2000 in Japan, 19/09/2000 in North America, 29/09/2000 in Europe.
This is what you get after cramming so many custom ICs into a single one.
Motherboard
Motherboard
Showing model 'SCPH-1000'.
Remaining chips are fitted on the back.
Later models included SG-RAM instead of VRAM and removed most of the external I/O and video outs.
Motherboard with important parts labelled
Diagram
Main architecture diagram
The Bus Interface Unit is also connected to special ports of the GPU and SPU.