Labels:automation | book | box | bulletin board | reckoner | sky | slide projector | trade name OCR: Execution Unit Activity Bus Interface Unit Activity The opcode byte Q jmp iS sent to the EU cycle and starts to axecute The displacement Any bytes that are byte of imp sent to prefetched this time before are the EU during cycle thrown away when the prefetch queue omptied The prefetch queue emptied pue the Cycle fetch of the opcode byte of push ax The opcode byte started push sent to the EU and starts tc The fetch of the execute opcode byte of Cycle push ax completeg push ax continues execute.. The fetch of the opcode byte of jmp started The fetch the opcode byte of imp completed FIGURE 12.7 Under the right circumstances, the prefetch queue cycle doesn't take any cycles after branch. In this figure. the jmp instruction ends by fetching the opcode byte of push ax which immediately starts to ...
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