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include bimodint.inc les di, bis ; points to Bimodal_Int_Struc mov ax, VPICD_Install_Handler call [lpfnVPICD] jc error ; carry flag set on error |
The VPICD_Install_Handler function installs a bimodal interrupt handler for the IRQ specified by the BIS_IRQ_Number field in the Bimodal_Int_Struc structure.
bis
Points to a Bimodal_Int_Struc structure containing information about the interrupt handler to install.
lpfnVPICD
Specifies the entry point address of the API handler for the virtual PIC device.
If the carry flag is clear, the function is successful. Otherwise, the carry flag is set to indicate an error such as the IRQ has already been virtualized or the IRQ number is not valid.
This function virtualizes the specified IRQ and creates supervisor-mode selectors for the interrupt handler's code, data, and additional segments (if any). The function also sets the supervisor-mode API handler.