Toshiba nv-pack, Manual

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Chapter 3 Functions
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3.3.1
VmsCreateFile
Interface VmsCrateFile – Get a handle to access each memory
Prototype HANDLE VmsCreateFile(DWORD how, void *p);
Description As the first argument, specify 0 indicating the data type DWORD
specified by the second argument.
For the second argument, pass a DWORD type pointer whose value is
the slot number to be accessed.
Slot 1 : PLC
Slot 3 : Windows
Return value Normal return is a file handle.
Abnormal return is zero.
Note
If the argument is correct but the return value is zero, Windows access control may be
working. In that case, run the application with administrator privileges to get the file handle.
3.3.2
VmsCloseHandle
Interface VmsCloseHandle – Release a handle
Prototype BOOL VmsCloseHandle(HANDLE hDevice);
Description Release the handle taken with VmsCreateFile.
Return value Normal return is TRUE
Abnormal return is FALSE