I made a similar emulator a while back. Mine was just for a little interface box that I use with some Dance Dance Revolution Pads. I used the KB2040 board from Adafruit since it has castellated edges, and soldered it to an interposer PCB. I found the code from that project, and I added it to a...
I found this worklog while working on a similar project, so I happen to have some information that may be of use regarding the RDRAM. On the PCBs that used the EE+GS chips, Sony followed the default recommended RDRAM layout given by Rambus almost verbatim. This makes deciphering their design...