1. A memory transfer method between a memory subsystem and a processor register file, the method comprising: generating a multi-word transfer instruction, wherein the multi-word transfer instruction specifies an access type information, a consecutive register group information based on a pair of information, a mask selection information and a base register information for a starting address of corresponding memory locations in the memory subsystem; and moving multiple words between the memory subsystem and the processor register file in response to the multi-word transfer instruction.