Yeah, I was probably wrong about the First Play link. Indeed, byte 5, its top 2 bits to be exact, makes difference between FP/VMGM/VTSM.
I tried to see what that command does in PowerDVD, and looks like VTS=0 preserves the value of SPRM5, meaning it goes to the root menu of the most recently played VTS. Scenarist doesn't allow VTS=0, which is a good indication that this is outside DVD standards. Check out what happens on a standalone Sony. I, too, find it a great way to test the DVD quality.
On the same topic, I've also been wondering what's supposed to happen if a CallSS command contains RSM=0.
|