Model
The original PlayStation 2.
Released on 04/03/2000 in Japan, 26/10/2000 in America and 24/11/2000 in Europe
Motherboard
Motherboard
Showing revision 'GH-001' from model SCPH-10000 only released in Japan.
Thanks to the donations received, I was able to purchase this model and take a proper photo to allow me to identify most of the chips.
I presume the chip at the bottom right corner is the 4 MB BIOS ROM
Motherboard with important parts labelled
Diagram
Main architecture diagram
The original design (Implemented on revision 'SCPH-10000').
Each data bus is labelled with its width and speed.
This architecture went through many revisions, more details below