I'm setting up a development kit for a student/friend who's looking to develop for the PSX. To help realize more modern concepts, I'm using the serial port to stream data at 3mb per second and upping the system ram to 4mb instead of 2. His dev unit will have the full 8mb as developers had back in th...

Got to say, I'm glad it's possible to create a PS1 Dev unit these days. Easier than doing so with an N64 in fact. (although I'm experimenting there as well.) Just as well I bought a separate x5000 series for these modifications! I'll update here once I've tracked down the needed RAM chips.