METHOD AND DEVICE FOR ACCESSING EXCLUSIVE REGISTER CONTAINED IN PROCESSOR

摘要

PURPOSE: An improved method and device are provided which accesses an exclusive register contained in a processor and can eliminate a delay that is caused by accessing the exclusive register. CONSTITUTION: In this method/device for accessing an exclusive register contained in a processor, a cache inhibition bit and an exclusive register access bit are supplied. A group of exclusive registers (34) is connected to a data cache (13) via a cache bypass bus (31). The bus (31) is available for a cache inhibition access when the cache inhibition bit is shown. However, the data obtained via the operations of the register (34) can be sent to the registers (34) via the bus (31) when the exclusive register access bit is shown.