source/slot, read number+mode
RGB Analog Input - Sync On Green
RGB3S/RG3SB Input - Separate Sync
RGB3S/RG3SB Input - Sync On Green
Component Input - Separate Sync
Component Input - Sync On Y
Component Input - Tri-Level Separate Sync
Component Input - Tri-Level Sync On Y
Data[1]
Mode
\x00
-
\x01
409