Flash device controller. The h/w card that actually controls Flash read/write/erase. Relevant for the AGS+ systems where Flash may be controlled by the MC+, STR or the ENVM cards, cards that may not actually contain the Flash chips. For systems that have removable PCMCIA flash cards that are controlled by a PCMCIA controller chip, this object may contain a description of that controller chip. Where irrelevant (Flash is a direct memory mapped device accessed directly by the main processor), this object will have an empty (NULL) string.