QUOTE(shambles1980 @ Oct 8 2012, 08:12 AM)

but in that context i would not know lol. it does sound like some sort of dvd boot skip feature or something at the least.
You were close actually, I did some digging in the xbox mailing list and came up with this:
QUOTE
1B (R/W): SMC_CMD_SCRATCH_REGISTER: This is a 1 byte R/W register whose
contents survive reset.
The contents of this register are not used at all by the SMC, as far as I
know. It just holds data for the operating system. The Xbox kernel uses
this register to communicate with itself across reboots. The flags are
defined below (all have been found):
01: SMC_SCRATCH_EJECT_AFTER_BOOT: Eject the tray after rebooting.
02: SMC_SCRATCH_DISPLAY_ERROR: Kernel panic after rebooting.
04: SMC_SCRATCH_NO_ANIMATION: Don't show the Xbox animation.
08: SMC_SCRATCH_RUN_DASHBOARD: Run the dashboard after rebooting regardless
of whether there is an executable disk present.