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Many European PS2 games used "PAL 60" modes or strange 50Hz refresh rates. The v1.2 BIOS handles the GS (Graphics Synthesizer) sync timing much better than the v1.0 BIOS. If you try to play Gran Turismo 4 (PAL) on an old BIOS, you get screen tearing. On v1.2, the framebuffer aligns correctly. you get screen tearing. On v1.2
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