Abstract: The present invention is a method for performing a parallel interpolation between corresponding pixel characteristics within a packed foreground pixel data word and a packed background pixel data word. A blending factor is used to indicate the extent to which the pixel characteristics are scaled, where the scaling is related to a power of two. The pixel characteristics within each packed data word are scaled simultaneously.

Abstract: An apparatus and method for emulation routine pointer prefetch are disclosed. The apparatus includes an emulated program counter (EPC), a prefetch state machine, a summing device, an opcode storage device, and a pointer storage device. The EPC, opcode storage device and pointer storage device are coupled to a bus to receive, store and output an emulated program counter value, an opcode value and a pointer to a next emulation routine. The EPC, opcode storage device, and pointer storage device are controlled by the prefetch state machine, which also is coupled to the bus to detect a reference to a reserved memory address and stores an updated emulated program counter value in the EPC using the summing device. The prefetch state machine uses the EPC value to prefetch the next source instruction to be emulated in a first memory operation. A portion of the prefetched source instruction is the opcode value and is stored in the opcode storage device.