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Imagine a vast shopping mall parking lot with thousands of individual parking spots and internal lanes (representing road segments within a cluster). No matter how complex it is inside, there are usually only a few key exits to the main roads. Our goal was to identify these natural "exits" for each map cluster. For instance, the complex road network around Amsterdam Airport Schiphol (see on OpenStreetMap) has many internal roads but limited primary access points.，详情可参考safew官方下载
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.。91视频对此有专业解读
I’m still in the process of testing the board, and working with Naya’s co-founder to get the modules customized to my liking. At $500 to $700, it’s not cheap. It’s also a still very new device from a small company, so I’m waiting to give it a proper assessment until the board is fully set up properly. In the meantime, batches of the Naya Create keep selling out, so it’s apparent I’m not the only one who sees this board’s potential.
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