OK getting an update here.
I have started to learn more about the PS by usung an Xplorer (THANKS BLAZE3927!) which is to make any PS act as a Net Yaroze.
However, I am not using the Yaroze SDK but instead using the PSY-Q SDK (Gotta' love Psygnosis (Studio Liverpool) for their amazing work).
Naughty Dog at the time when Andy Gavin and Jason Rubin were there working on Crash Bandicoot, Andy re-wrote the Library files. Mainly because the PS only had 2 MB of DRAM @ 16MBIT which was not a lot to fit in level data, collision data etc...
The GPU RAM (VRAM > SGRAM) is a lot faster however than the main RAM (SRAM). So a good idea is to program into the VRAM first, then move the data along into the RAM. This is a question for the game however, if you need the VRAM instantly for graphic data.
I also managed to get across (after a weeks worth of re-installing Windows 95, 98 and ME over and over) an .EXE file for the PS to execute. Nothing special or fancy. Many people have done it before. I mean, thank the people who wrote Xkiller and CAETLA.
But I will be looking into this more now.
Also going to read the ENTIRE PSY-Q manual.
I want to know the PlayStation in and out 100%. lol.
Annoying, because at the moment I only have a SCPH-5502 (2 = PAL). I need a 1001 model as its security and mainboard was much more simplistic. IE: Components not incorperated into one.
Anyway, I have been doing all the research I can to make this dream a reality