Begin_Message_Mode

include vmm.inc

mov     ebx, VMHandle
mov     eax, Begin_Message_Mode
VMMcall System_Control

Notifies the virtual display, keyboard, and mouse devices to prepare to display messages and read input from the keyboard. The system sends this message to all virtual devices in order to prepare the system for a full-screen error message (informally known as a 'blue-screen message' because of the color traditionally used for such messages). The virtual device may modify all general registers and flags.

• This message cannot be failed. The virtual device must return carry clear from this message.

VMHandle

Handle of the virtual machine entering message mode.

This message is usually processed only by the virtual keyboard, mouse, and display devices.

See also End_Message_Mode