The PS1 BIOS version can be seen in a string (codenamed VERSTR) with this text, where the last character of the first text row with the suffix "A" indicates the region (A=America, E=Europe, J=Japan). This character is always located at offset 0x7FF52 in all PS1 and PS2 bios/roms
On PCSX2 while in PS1 mode the latest versions of the "J" and "E" roms/bios are not able to load the games from all regions because was added an additional CD licence check that only accepts the discs matching the hardcoded regionThe "A" roms/bios are able to load all regions games because doesnt have this check. It happens the same in the PS2 roms/bios, only the "A" ones accepts the games from all regions by default (this is why you have to patch the MECHACON for the US DTL region to get true region free playback)The bios included in the PS3 firmwares is the "A" version, so it doesnt have this check, and allows the version string to be patched to replace the suffix "A" by "E" or "J" as explained below
Ps3 Emulatorx 122 Bios
Is worth to note the suffix "A", "E", or "J" in the version string inside the BIOS is always on the same offset in ALL PS1 and PS2 bios images. So in case of replacing the bios the patches mentioned above will be applyed normallyThe bios can be replaced by any PS1 rom image (included DTL models), and by most PS2 rom images (maybe by all, deckard models untested). Replacing it by the original PS1 bios restores the Sony logo at start up, and should allow to run ps1 menu alone, but that's untested. Props to Jabu, iirc he figured out running Sony startup screen ages agoThe emulator have a bug (netemu at least) that loads the bios with a fixed size of 4MB file. They probably not changed that size after they reduced the bios file size from 4MB to 512KB. So any PS1/PS2(no deckard) bios image can be used if it have a size of 4MB or smaller. All of them should load games fine.
But the emulator is the problem.Emulators are legal but you need the system bios to make them work. Thats a lot harder to do it yourself.And using a copied bios from someo e else is illegal.
I have all bioses setup properly and have created playable xbox isos using several recommended programs like qwix101, createiso (xbox360 software) and xiso. No iso launches. It just returns to the iso selection screen.
@Guitario The cheapest route is just to use your existing PC, but that doesn't solve needing to configure everything and get all the correct bin/cue files and all that. The Polymega is the easiest way to play CD-based games. The fact that it will play backups makes it even simpler. Emulating NES, SNES, Genesis, TG16, etc.? Yeah, that stuff is real easy. But these CD-based consoles are a huge pain in the ass, because you need the right bios files, RAM add-ons, and you have all these goofy files and stuff. I've done the Raspberry Pi stuff and it's just never as simple as people make it out to be. Try configuring multiple controllers for a Pi, then map all the buttons over manually when it's not recognized correctly. Even just getting a Bluetooth controller working on a computer is a hassle, because you need to check if you're on D-input, X-input, etc. Then all of a sudden AB and XY are reversed. The complications never end. Will it be enough to shoot Polymega to stardom, I dunno. But configuring a computer is not something even 1% of the population can do.
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