Paul Owen <paul <at> starstreak.net> writes: > intel_reg_read 0x70008 (PIPEACONF): 0xC0000000 / bits 26 and 13 aren't set > intel_reg_read 0x70180 (DSPACNTR) : 0xD8004400 / bit 25 isn't set > > intel_reg_write 0x70008 0xC4002000 > intel_reg_write 0x70180 0xDA004400 > > Seems to have the desired effect - that is video seems to have the > correct colour range - this is by eye since my TV doesn't seem to > report the actual input range anywhere. Running just the first command > seems to raise the brightness/decrease the contrast (or just raise > gamma - not sure) - the second brings it back down - so both as you > say are needed. Changing refresh seems to knock out the effect of the > second command. Re-running that second command fixes it once more. > I've posted on the XBMC forum in the hope others can try this to see > what effect it has. > Hello. I have been playing around with these registers and the steps above do not work for me. However, I found a slightly different way to change the color range that works for me. Bit 13 (e.g. color range select) needs to be set and also the enable-bit must be toggled for change to take effect. Write-sequence to change from full range: intel_reg_write 0x70008 0x40002000 (disable) intel_reg_write 0x70008 0xC0002000 (enable again) And to go back to full range: intel_reg_write 0x70008 0x40000000 (disable) intel_reg_write 0x70008 0xC0000000 (enable with full color range) Be aware that the console goes black when the pipe is disabled. The best is perhaps to test this via a remote connection. Hopefully this will be of use to others as well. By the way. There is a test pattern in XBMC that can be used to verify that this works. It's the one with black and white rectangles and flashing circles. If you can see all 4 flashing circles (2 white and 2 black) you have a good setting. Cheers
