1. A computer system comprising: a processor coupled to a bus; a memory coupled to the bus, the memory mapped according to a predetermined specification; a device controller coupled to the bus; and a basic input-output system (BIOS) coupled to the bus, the BIOS having a device support component to provide support for a device using a portion of a defined region of the memory to maintain and pass parameters when a SMM handler is invoked from the ACPI ASL code.