Compatibility: Win 3.x
Expect: AX    4005H
Return: none
Info: VM-aware applications which have used INT 2fH 4000H (enable VM-
assisted video save/restore) can intercept this fn and take
whatever action is needed to save the state of the video

The VDD calls this fn when it is about to access video memory;
for instance, when it about to copy video memory to the

The application must save the registers and return within 1000ms
(1 second) or the VDD will go ahead and access video memory

- -

INT 2fH 4005H: Save Video Register State