G - Physics – 06 – F
Patent
G - Physics
06
F
354/232
G06F 13/00 (2006.01) G06F 9/00 (2006.01) G06F 9/30 (2006.01) G06F 9/312 (2006.01) G06F 9/318 (2006.01) G06F 9/34 (2006.01)
Patent
CA 1200319
ABSTRACT OF THE DISCLOSURE This invention relates to a register and more specifically to a register control processing system for control. In general, control registers are theoretically required in such a number less than the number which can be designated (example: 16) and only the required number of registers are mounted as the hardware. In order to add functions or set compatibility with other system, it is sometime required to use a register not mounted or to use the existing registers for other purposes. In this case, it can be considered to provide virtual registers on the memory. But, if only the registers to be added are provided on the memory, instructions must be executed by distinguishing the register access and memory access in accordance with register number etc. Thus, this invention provides 16 registers as the virtual registers. The controls are thereby simplified in accordance with a kind of instruction. Namely, when an instruction is the LOAD instruction, the same content is loaded to both real and virtual registers, or when it is the STORE instruction, content is stored from the virtual register.
431511
Kato Motokazu
Matsumoto Toshio
Mizushima Yoshihiro
Ohnishi Katsumi
Sato Kiyosumi
Fetherstonhaugh & Co.
Fujitsu Limited
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