Enable_Local_Trapping

include vmm.inc

mov     ebx, VM         ; VM handle
mov     edx, Port       ; I/O port number
VMMcall Enable_Local_Trapping

Enables I/O port trapping for the specified port. This applies to the specified virtual machine only. Uses Flags.

• No return value.

VM

Handle of the virtual machine for which to enable I/O trapping.

Port

Number of the I/O port for which trapping is enabled.

This service must not be used unless an I/O callback procedure has been installed for the given port using the Install_IO_Handler or Install_Mult_IO_Handlers service during initialization. In particular, you should not attempt to alter the port trapping state of a port for which you did not personally install an I/O handler. Altering the port trapping state of a port owned by another virtual device driver may cause that other driver to get confused.

See also Disable_Local_Trapping, Install_IO_Handler, Install_Mult_IO_Handlers