TimerMiscFlags

While introducing the TimerControlFlags at offset 0x01 in the DISPATCHER_HEADER for Timer objects, Windows 7 also made bit fields at offset 0x03, where there had been a boolean Inserted since version 4.0:

Mask (x86) Mask (x64) Definition Versions
0x01  
UCHAR Index: 1;
6.1 and higher
  0x3F
UCHAR Index: 6;
6.1 and higher
0x3E  
UCHAR Processor : 5;
6.1 and higher
0x40
UCHAR Inserted : 1;
6.1 and higher
0x80
UCHAR volatile Expired : 1;
6.1 and higher