BRIEF DESCRIPTION OF THE DRAWINGS
The above and other objects, advantages and features of the present invention will be more apparent from the following description taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic view for describing a first embodiment of the present invention;
FIG. 2 is a block diagram showing configuration of a semiconductor integrated circuit in accordance with the first embodiment of the present invention;
FIG. 3 is a view for describing correspondence between a cache memory and a valid bit memory;
FIGS. 4A to 4M are timing charts for describing a saving operation in accordance with the first embodiment;
FIGS. 5A to 5M are timing charts for describing a recovery operation in accordance with the first embodiment;
FIG. 6 is a schematic view for describing a second embodiment of the present invention;
FIG. 7 is a block diagram showing configuration of a semiconductor integrated circuit in accordance with the second embodiment of the present invention;
FIGS. 8A to 8O are timing charts (1) for describing a saving operation in accordance with the second embodiment;
FIGS. 9A to 90 are timing charts (2) for describing the saving operation in accordance with the second embodiment;
FIGS. 10A to 10N are timing charts (1) for describing a recovery operation in accordance with the second embodiment;
FIGS. 11A to 11N are timing charts (2) for describing a recovery operation in accordance with the second embodiment;
FIGS. 12A to 12O are timing charts (1) for describing a saving operation in accordance with a third embodiment;
FIGS. 13A to 13O are timing charts (2) for describing the saving operation in accordance with the third embodiment; and
FIGS. 14A to 14I are timing charts (3) for describing the saving operation in accordance with the third embodiment.