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Everything about Program Segment Prefix

Data structure in DOS

The Program Segment Prefix (PSP) is a data structure used in DOS systems to store the state of a program. It resembles the Zero Page in the CP/M operating system. The PSP has the following structure: Wikipedia →

đź§­ Start here: a 6-step reading path

  1. Read the overview: Program Segment PrefixA 5-minute orientation
  2. Pick up a classic book: TCP/IP IllustratedThe most-reprinted book on the subject
  3. Go sideways: DOS MZ executableA closely related topic
  4. Go sideways: Zero page (CP/M)A closely related topic

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