Long description

The figure shows a circle of twelve square blocks labeled A, B, C, D, E, F, G, H, I, J, K, and L starting from the top in clockwise direction. An arrow from the center points to the block C.

Note: When a page fault occurs, the page the hand is pointing to is inspected. The action taken depends on the R bit: R equals 0: Evict the page. R equals 1: Clear R and advance hand.