Unverified95% confidenceFactExact time
x86实模式下物理地址计算公式为：段寄存器值 × 16 + 偏移量，最大寻址空间为1MB
1
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95%
Confidence
Long-term
Relevance
5/24/2026
First Seen
Sources
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Related Claims
UnverifiedReal mode uses 16-bit registers and a segmented memory model, calculating a 20-bit physical address by shifting the 16-bit segment register left by 4 bits and adding a 16-bit offset, with an addressable space of only 1MB.78% similarUnverifiedLinux 默认配置下每个线程的用户态栈约 8MB，512 线程理论峰值约 4GB 虚拟地址空间68% similarUnverifiedIn a DOS environment, programs run in the CPU's real mode, using 16-bit registers and a segmented memory model with an addressable space of only 1 MB66% similarUnverified差分启发式需要O(K×N)的存储空间（K个地标、N个节点），例如100万节点的图使用16个地标、每个距离值4字节存储，总内存约64MB62% similar
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