FreeDOSDeep Dive 7 min read
DOS File Handles: Open, Read, Inherit, and Redirect I/O
Follow the DOS INT 21h handle API from open through close, and understand how handle-based I/O enables command-line redirection.
#freedos#ms-dos#int-21h
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#file-handles
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FreeDOSDeep Dive 8 min read
DOS Handle Capacity: FILES, JFTs, SFTs, and INT 21h AH=67h
Separate DOS per-process handles from the system open-file table, then size FreeDOS FILES and AH=67h without assuming one limit controls every program.
#freedos#dos-api#file-handles
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