The tradeoff is complexity. The microcode must be carefully arranged so that the instructions in delay slots are either useful setup for both paths, or at least harmless if the redirect fires. Not every case is as clean as RETF. When a PLA redirect interrupts an LCALL, the return address is already pushed onto the microcode call stack (yes, the 386 has a microcode call stack) -- the redirected code must account for this stale entry. When multiple protection tests overlap, or when a redirect fires during a delay slot of another jump, the control flow becomes hard to reason about. During the FPGA core implementation, protection delay slot interactions were consistently the most difficult bugs to track down.
对协商确定的事项,居民委员会应当及时组织实施或者监督落实;需要提交居民会议或者居民代表会议的,应当召集会议讨论决定。
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More modern orthography
l00777 0 0 0 /lib - usr/lib
Jon Butterworth is professor of physics at University College London, and a member of the ATLAS Collaboration at Cern