It sounds like you’re looking for a properly formatted or technical documentation about PCSX2 version 1.7.0 and its BIOS requirements , possibly including setup, legality, and technical function.
A major turning point came with the v1.7.0 development series. Before this version, PCSX2 relied on a plugin architecture where different components (graphics, audio, input) were separate DLL files. As of v1.7.0-dev-1420, PCSX2 merged all functionality into the core emulator, eliminating the concept of plugins entirely. This architectural change improved stability and performance while simplifying setup for end users. pcsx2 170 bios
If you cannot dump your own BIOS, you have two legal (but limited) options: It sounds like you’re looking for a properly
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Without a valid BIOS file, PCSX2 will display a configuration error and refuse to boot any games. The Legality of PS2 BIOS Files