[dantheta]

One of my previous companies was producing a Digital TV set-top box based on a Via mini-ITX board. When using component output, the overscan on the image was way too big and we were losing a significant portion of the TV picture outside the displayable area. The next best video mode put large black borders on all four sides of the image.

I needed a video mode that was a better fit for the screen, so I derived a set of parameters to add a new video mode to the Linux drivers for the VT1625 Via video card.

I did this by writing a small C program which could inspect the video card registers on a Win98 machine that was using the official driver. Once I had a set of register values, I used online documentation to transform them into the initialisation values used in the video driver.

The video mode was submitted back to the openchrome project, and as far as I know it's still there. It took me about 5 days of prodding, and another day of trial&error.