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Heretic
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2,766 Posts
Discussion Starter · #1 ·
I was just wondering why we need Rom1? When I found out that I needed it for the emulator to run I merely made a copy of my bios and renamed it and it remedied the problem. This leads me to the question of what the purpose of rom1 and erom are for if I can successfully substitute something else for them?

I did a quick search of the guides and forums and while people mentioned you needed them I could not find any indication of other people substituting the files.
 

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A Square Fan!
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592 Posts
At this moment they aren't needed to run the emu.
And, I don't know what are they for.....I heard something about DVD firmware and PS2 decode system. But, I don't know exactly......
 

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Heretic
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2,766 Posts
Discussion Starter · #4 ·
Cheers! That was the exact answer I was after. Thanks for the help DeathPenalty.
 

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Heretic
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Discussion Starter · #6 ·
Really?... I was sure I read over the guide... I must've missed it :S
 

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PCSX2 Coder
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10,122 Posts
Yep its under the section explaining the bios, to quote

The ROM1 is an additional part of the BIOS that contains some extra stuff like ID's for DVD Player version etc.
 

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The nvm is created for you if you dont already have it so it is of no concern. As with bios files, we have been thinking of changing the format of the bios files so that all the files(rom0/rom1 etc) are contained within one file to remove any confusion when using the emulator. This has not been finalized and if/when it happens a new bios dumping tool will be released also.

As for rom1 etc not being needed. That statement is kinda incorrect. To run the BIOS 100% you need those files as the BIOS uses them. I havent seen a game that uses them as of yet(I doubt there ever will be). So in reality to run the BIOS 100% you need all the romX files associated with that bios.

For instance. only the chinese ps2's(that we know of) use ROM2. The first versions of JAP ps2's dont have a ROM1 or EROM.

Hope this sheds some light on the subject



auMatt
 
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