RetroTINK-4K Custom Output Modeline Instructions
Up to 4 custom HDMI® output modelines can be loaded
on the SD card. The files are custom1.txt, custom2.txt, custom3.txt and
custom4.txt respectively.
Modelines
are stored as a single line of 12 comma separated values. For example:
1690, 130, 184, 624, 1, 1420, 3, 10, 60, 1,
69.420, "1420p60"
1. Horizontal Active Pixels
2. Horizontal Front Porch Pixels
3. Horizontal Sync Pixels
4. Horizontal Total Blank Pixels (Active +
Front Porch + Sync + Back Porch)
5. Horizontal Sync Polarity (1 = positive,
0 = negative)
6. Vertical Active Lines
7. Vertical Front Porch Lines
8. Vertical Sync Lines
9. Vertical Total Blank Lines (Active +
Front Porch + Sync + Back Porch)
10. Vertical Sync Polarity (1 = positive, 0
= negative)
11. Nominal Frame Rate (floating point
value) when in Triple Buffer mode
12. String Text Name (not used currently)
Guspaz
created a tool to generate modelines automatically: https://guspaz.github.io/video_timings_calculator