1. A system for implementing very long instruction words (VLIW), the system operable to: receive a first very long instruction word (VLIW) comprising a set of slot instructions corresponding to a set of functional units, wherein: each slot instruction includes an opcode identifying an operation to be performed by the set of functional units and value fields related to the operation, wherein a dedicated subset of the value fields include dedicated bits dedicated to the slot instruction and an allocable subset of the value fields include allocable bits allocable to other slot instructions; identify the opcodes of each slot instruction; determine, based on the opcodes, which allocable bits are allocated to which slot instructions; and instruct each functional unit to perform an operation identified by a corresponding slot instruction using the corresponding dedicated bits and any allocable bits determined to be allocated to the slot instruction.