Legally, the only way to use a PS2 BIOS with an emulator is to create a personal backup from a console you own. Common methods for this include:
The BIOS (Basic Input/Output System) is the low-level firmware that tells the PS2 hardware how to boot up, handle memory, and interact with controllers and discs. fps2bios
new_int10h: cmp ah, 0Ch ; Is this a write pixel call? jne old_bios ; If not, jump to original handler push es mov ax, 0xA000 ; VGA segment address mov es, ax mov di, cx ; X coordinate mov ax, dx ; Y coordinate shl ax, 8 ; Quick multiply Y*320 (approximate) add di, ax mov al, bh ; Color value stosb ; Write directly to linear frame buffer pop es iret Legally, the only way to use a PS2
The only strictly legal way to obtain a PS2 BIOS is to "dump" it from a physical PS2 console you own. jne old_bios ; If not, jump to original