Hi, All.
Most of all DVI receivers (I didn't inspect for all) have CTL pins (CTL1, -2, -3). Their functions are described as "General output control signal 1(2,3)". It is good opportunity to carry control signals for target device via DVI.
Unfortunately, I never have seen any applications of them.
Of course, if I made own DVI transmitter, I would make that management. But I would like to use a common VGA card with DVI output. So, I have no info about access to those pins on transmitter's side.
I have inspected CTL1..3 pins with oscilloscope - no one was changing.
Have somebody any info or, may be, met any software, which can manage those signals? Are there any standard soft libraries?