Virtual Devices (3.1) (vdag31qh.hlp) (Table of Contents; Topic list)
Important Notice
The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.
Int13_Unhooking_BIOS_Int
                                                     ◄Up► ◄Next► ◄Previous►
────────────────────────────────────────────────────────────────────────────
 
include int13.inc
 
VxDcall Int13_Unhooking_BIOS_Int
 
The Int13_Unhooking_BIOS_Int service notifies the virtual device that the
Int 13h BIOS is being unhooked. The virtual block device calls this service
before the Interrupt 13h chain is actually unhooked.
 
Parameter  Description
────────────────────────────────────────────────────────────────────────────
 
EAX        Specifies the address (CS:IP) of the original MS-DOS BIOS
           Interrupt 13h hook.
 
ECX        Specifies the address (CS:IP) of the original ROM BIOS Interrupt
           13h hook.
 
Return Value
 
This service has no return value.
 
Uses
 
EAX, EBX, ECX, EDX, ESI, EDI, and Flags
 
                                      ♦