The Very Long Instruction Word (VLIW) processor consists of CPU (central processing unit) architecture that reads a relatively large group of instructions and executes them at the same time. VLIW architecture allows for an alternative way to organize microprocessors. In contrast to using hardware (e.g., the CPU's control unit) to perform complex decisions for the scheduling of machine-level instructions, VLIW architecture performs such scheduling at compilation time with the use of software. This transfer of operations from hardware to software (microprocessor to compiler) leads to easier designed and more efficient microprocessors. At the same time it takes advantage of the versatility of software to handle difficult tasks.

VLIW processing uses a set of instructions from assembly language that is implemented using horizontal microcode. (Horizontal microcode is a technique for implementing a set of instructions for a processor...