Unverified50% confidenceFactExact time
Real 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.
1
Sources
50%
Confidence
Long-term
Relevance
8/9/2026
First Seen
Sources
逆向工程DOS游戏《圣经船长》：一场技术考古之旅
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