FCode is a Forth programming language dialect compliant with ANS Forth. Forth is a structured, imperative, stack-based, computer Programming language and programming environment Forth is a structured, imperative, stack-based, computer Programming language and programming environment It is of interest mainly for its use in Open Firmware. Open Firmware, or OpenBoot in Sun Microsystems parlance is a standard defining the interfaces of a computer Firmware system formerly endorsed by the It can exist in two forms; source code and a compiled version, known as bytecode. FCode is mainly used in writing Open Firmware device drivers for PCI cards. The Peripheral Component Interconnect, or PCI Standard (commonly PCI) specifies a Computer bus for attaching peripheral devices to a Computer