Sorry I didn't get this done last night. It was too late to fire up the computer and get it done.
I have been getting values on this all morning, and here's my observations.
It doesn't matter if the screen is on, off, or dimmed, the values of 0xBA0811AC and 0xBA0811B0 never change. The values of 0xBA081440 are the ones I'm assuming you are really looking for.
When the screen is on, the first 8 bits are 00400101 12010000 followed by something that seems to change independantly of whether the screen is on or off. When the screen is off, the value is 00400101 00400000 which is again followed by something that doesn't seem to follow a pattern.
Here's the dump twice, starting with the screen on, then off, then on, then off:
Code:
HaRET(1)# vdump 0xBA0811AC 16
ba0811ac | 00000001 00000000 00000000 00000400 | ................
HaRET(2)# vdump 0xBA081440 16
ba081440 | 00400101 12010000 002f22f8 00000000 | ..@......"/.....
HaRET(3)# vdump 0xBA0811B0 16
ba0811b0 | 00000000 00000000 00000400 00000000 | ................
HaRET(4)#
HaRET(5)# vdump 0xBA0811AC 16
ba0811ac | 00000001 00000000 00000000 00000400 | ................
HaRET(6)# vdump 0xBA081440 16
ba081440 | 00400101 00400000 002f84a1 00000000 | ..@...@.../.....
HaRET(7)# vdump 0xBA0811B0 16
ba0811b0 | 00000000 00000000 00000400 00000000 | ................
HaRET(8)#
HaRET(9)# vdump 0xBA0811AC 16
ba0811ac | 00000001 00000000 00000000 00000400 | ................
HaRET(10)# vdump 0xBA081440 16
ba081440 | 00400101 12010000 002fe64a 00000000 | ..@.....J./.....
HaRET(11)# vdump 0xBA0811B0 16
ba0811b0 | 00000000 00000000 00000400 00000000 | ................
HaRET(12)#
HaRET(13)# vdump 0xBA0811AC 16
ba0811ac | 00000001 00000000 00000000 00000400 | ................
HaRET(14)# vdump 0xBA081440 16
ba081440 | 00400101 00400000 002fe64a 00000000 | ..@...@.J./.....
HaRET(15)# vdump 0xBA0811B0 16
ba0811b0 | 00000000 00000000 00000400 00000000 | ................