DosCLIAccess

Bindings:  C, MASM 

This call requests I/O privilege for disabling and enabling interrupts. 
 Access to ports must be granted with DosPortAccess. 

 DosCLIAccess     ( ) 
 

 rc (USHORT) - return 
    Return code descriptions are: 

    0         NO_ERROR 
 
 Remarks 

 Applications that only use CLI/STI in IOPL segments must request CLI/STI 
 privilege from the operating system. 

 Applications that use IN/OUT instructions to I/O ports must request I/O 
 privilege with DosPortAccess. (See DosPortAccess for more detail.) 
 Request for port access also grants CLI/STI privilege from the operating 
 system.