VCPI_PRESENT		=	0DE00H
VCPI_INTERFACE		=	0DE01H
VCPI_MAX_PHYMEMADR	=	0DE02H

VCPI_MEM_CAPACITY	=	0DE03H
VCPI_ALLOC_PAGE		=	0DE04H
VCPI_FREE_PAGE		=	0DE05H

VCPI_GET_PHYMEMADR	=	0DE06H

VCPI_READ_CR0		=	0DE07H
VCPI_READ_DR		=	0DE08H
VCPI_SET_DR		=	0DE09H

VCPI_GET_PIC_VECTOR	=	0DE0AH
VCPI_SET_PIC_VECTOR	=	0DE0BH

VCPI_MODE_CHANGE	=	0DE0CH

DOS_REQ			=	21H
EMS_REQ			=	67H
VCPI_REQ		=	67H