bit 0 -- VMImmune -- This bit indicates that your device driver is VM
safe. See
Technote NW 13 for details.
bit 1 -- reserved
bit 2 -- kmDriverGestaltEnableMask (in "DriverGestalt.h") is set if the
driver supports the Driver Gestalt mechanism. See "Designing PCI Cards and
Drivers for Power Macintosh Computers" for a description of Driver Gestalt.
bit 3 -- Native Driver -- Set if the driver is a native driver (ndrv).
The system will set this bit when it loads your native driver.
bit 4 -- Concurrent -- Set if the native driver supports concurrent
operation. When loading a native driver, the system sets this bit based on the
kDriverIsConcurrent field of the driverOSRuntimeInfo.driverRuntime field of your
DriverDescription. See "Designing PCI Cards and Drivers for Power Macintosh
Computers" for a description of concurrent drivers.
bit 5 -- dOpenedMask (in "Devices.h") is set if the driver is open.
bit 6 -- dRAMBasedMask (in "Devices.h") is set if the dCtlDriver field
is a DRVRHeaderHandle rather than aDRVRHeaderPtr .
bit 7 -- drvrActiveMask (in "Devices.h") is set if the driver is
currently processing a request.
bit 8 -- dReadEnableMask (in "Devices.h") is set if the driver handles
_Read requests.
bit 9 -- dWritEnableMask (in "Devices.h") is set if the driver handles
_Write requests.
bit 10 -- dCtlEnableMask (in "Devices.h") is set if the driver handles
_Control requests.
bit 11 -- dStatEnableMask (in "Devices.h") is set if the driver handles
_Status requests.
bit 12 -- dNeedGoodByeMask (in "Devices.h") is set if the driver needs a
"goodbye" _Control call before the application heap is reinitialized.
bit 13 -- dNeedTimeMask (in "Devices.h") is set if the driver wants
periodic SystemTask time through the "accRun" _Control call.
bit 14 -- dNeedLockMask (in "Devices.h") is set if the driver requires
that its DCE and code be locked at all times when the driver is open.
bit 15 -- reserved
