Yes. Despite how it sounds, "dumping" only copies the BIOS; it does not remove or modify it.
Legally, PCSX2 requires you to have a PlayStation 2 for two reasons, one as a license to play PlayStation 2 games, and the other for you to dump the BIOS from, as PCSX2 requires a copy of the PlayStation 2 BIOS. Once you have PCSX2 running, however, there is no technical reason you need a PlayStation 2.
It is actually not as hard as you would think. Refer to: http://forums.ngemu.com/pcsx2-forum/84994-guide-dump-bios-through-usb.html for directions to dump your PS2 bios onto a USB Flashdrive. And on a side note, when you dump your bios using a custom code (as explained in the above link) you are actually copying your bios, so it does not render your PS2 useless.
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They're the startup code for the PS2. You need to dump (save) them from your console if you plan to run an emulator, but that involves either a mod chip or disc-swapping. Also, since the code is copyrighted by Sony it's illegal to download or distribute.
While PlayStation 2 emulators like PCSX2 have gotten better about emulating the hardware, the firmware (BIOS) of the PlayStation 2 is very unique. It takes time to reverse-engineer all the system calls that games make to the BIOS, so there is currently no drop-in replacement for the real deal.
It could be the regional thing. Like you're trying to play games from USA but using a PAL bios (for European games.)
You could either dump the bios yourself, which could take a little patience, or download from the link below. Note that the only LEGAL way of obtaining a bios is dumping it from your OWN Playstation 2 console.DO NOT ask where to get the bios in the PCSX2 forum, because it's against the rules. That's because the ps2 BIOS is a copyrighted material of Sony and that makes its distribution illegal, meaning we could get in trouble if it was found out that we were supplying people illegally with bios files.Getting the bios needs to come from your machine according to copyright protections. Procedures can be found at the link for the best emulator the PCSX2. PCSX2 is a Playstation 2 'emulator', a free program that tries to replicate the Playstation 2 console to enable you to play PS2 games on your PC. If you do not have the skill to even download bios think about forgetting PS2 emulation. It will not be like playing a PS2 and instead is a lengthy and time consuming process. See the PCSX2 home site and try the getting started link. or the other link for the guide and under the guide bios configuration section there is a link for "A new Bios dumper is already available that can dump your PS2 Bios,ROM1,ROM2,EROM and NVM. Get it HERE"
No PlayStation 3 games do NOT work on the PlayStation 2 system.
The only LEGAL way of obtaining a bios is dumping it from your OWN Playstation 2 console That's because the ps2 BIOS is a copyrighted material of Sony and that makes its' distribution illegal.
The original Sony 8MB memory cards (for PlayStation 2) work best, but any memory card will work in the PlayStation 2 Slim
no
No they do not work in a PS2