Three microcode cycles for the writeback alone. That's acceptable because segment loads are already expensive multi-cycle operations, and the designers likely expected them to be infrequent -- most programs load their segments once at startup and never touch them again. Page translations happen on every memory access, so the same approach would be ruinous. Hence the fully autonomous hardware walker.
Юлия Мискевич (Ночной линейный редактор)
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在正定提出“半城郊型”经济发展路子,在福建提倡念好“山海经”,在浙江统筹城乡发展、擘画“千万工程”,在上海探索特大型城市管理新模式……经得起历史和实践检验的政绩,始终建立在“以调研开路”“从实际出发”的基础上。