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Resolution

Here is an example of a (probably) unusual PSX resolution, 720×576 15bit (PAL interlace). This is accomplished by setting the PSX to display a 720×576 image and then constantly updating the upper part of the image using DMA as the PSX has a hardcoded framebuffer of 1024×512 pixels. Luckily the RAMDAC wraps when reaching the bottom of the image, making it possible to show more than 512 lines. This will probably not work in any current emulator as an effect like this requires linebased emulation.

This is a picture of “Penny” (Kaley Cuoco). The screenshot is scaled to 768×576 to have the right proportions on a 1:1 pixel computer monitor.

overscan.zip

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