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.
展望前景，从一年到五年，再到2035年远景目标，年度目标衔接五年规划，五年规划服务远景目标，这种层层递进、环环相扣的战略体系，确保了“一张蓝图绘到底”。。新收录的资料对此有专业解读
。业内人士推荐新收录的资料作为进阶阅读
Let’s set some ground rules. For one thing, this is only 21x22 = 462 bytes. This is less than half the 40x24 = 960 bytes left for the Apple’s text mode, but I’m assuming it’s still going to be oddly spread over a 1kiB page, because of the need to refresh DRAM. Still, we’ll give two possible text mode pages, just like the regular Apple, in less RAM. That 4kiB system doesn’t seem as bad.
“thanks for the money,，详情可参考新收录的资料
Hurdle Word 1 answerWATCH