[6.0.0b1] Possible overscan regression in NTSC games

[johnnovak]

Regression (or difference) compared to 5.3.1.

I've noticed this in Monkey Island 2 and Battle Chess II (using the SPS images). Note the 1px wide dotted line on the left side of the image. This actually flickers at the refresh rate (odd/even lines).

Goes away if I untick NTSC in the chipset config. Possible NTSC emulation bug?

Configs:

• Battle Chess II - Chinese Chess.zip
• Monkey Island 2 - LeChuck's Revenge.zip