Can't save files (PS1)

[pyd]

Pi Model: 3B
RetroPie Version Used: Latest
Built From: Pre made SD Image on RetroPie website
USB Devices connected: None other than controller
Controller used: F310
Emulator: PSX

So, this might be answered before but I couldn't find anything when searched.
I just installed my first RetroPie and dumped in a couple of games.
I played Tony Hawk Pro Skater 1 on PS1 and saved my career, with no errors.
But when I restart the game there is no saved careers.

I figured that is was a permissions problem, but I've set "/home/pi/RetroPie/roms/psx" to 777, and no luck.

In /opt/retropie/configs/psx/retroarch.cfg" i've set:

input_remapping_directory = "/opt/retropie/configs/psx/"
savefile_directory = "/home/pi/RetroPie/roms/psx"
savestate_directory = "/home/pi/RetroPie/roms/psx"
#include "/opt/retropie/configs/all/retroarch.cfg"

What am I missing?

[dankcushions]

you need a valid bios. https://github.com/retropie/retropie-setup/wiki/playstation-1#bios

[pyd]

Awesome, thanks!
I did not realize that such "important" file was not included by default.
But I guess that is because of legal rights.

Quick followup, is it the same for PS2?
In the wiki, there is a segment on bios.
But the path in the wiki does not exist, and there are no reference to correct filename.

[dankcushions]

@pyd in the documentation it says that ps2 doesn't work for pi:

https://github.com/retropie/retropie-setup/wiki/Playstation-2
"This is only for x86 builds- Not the Raspberry Pi!."

so it (and paths) are not installed on your pi