ENERGY SAVING METHODS AND DEVICE FOR SELECTIVE PERMISSION OF COMPARATORS IN REGISTER FILE WITH RENAMING BASED ON KNOWN PROCESSOR STATUS Russian patent published in 2010 - IPC G06F1/32 G11C15/00 G05B1/00 G06F12/02 

FIELD: information technology.

SUBSTANCE: device for saving power when reading the register from a register file has a processor for reading operands which enables command execution, a physical register file (PRF) with operands to be read by the processor; a tag array having an address associated with a operand in the PRF, and an attribute which describes operating status of the processor; a tag comparator array, where each tag comparator array compares the operand address generated by the processor with the tag, coincidence of the tag during comparison is required for reading the operand from the PRF; and an operating status comparator array, where each operating status comparator is associated with a tag and compares the attribute with the current operating status of the processor and activates or blocks the associated tag comparator, where not all tag comparators are activated. The method describes operation of the said device.

EFFECT: power saving when reading the register from a register file.

20 cl, 6 dwg