What is int 67 ax=DE00h to ax=DE0Ch functions for and how to use the VCPI . Is it separate device and do I have to check for the installations . I tried to pass function 0DE00h in ax but ax register returned some other value other than 0 .(ax=00h for present of VCPI). Tell also the relation between int 15h ah=89h for switching to pmode.
I am using win98 and the above is a reference I made in Ralf Brown Interrupt list.
Help me. I am new to asm.