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AX = B711h
Note: If the next INT 21h call (and ONLY the next) is function 3Dh, 43h, or 6Ch (also 4B03h and 4Eh if /X active), the fully qualified filename is written over top of the filename passed to the INT 21h call. The application must provide a sufficiently large buffer. This state is reset after the next INT 21h call processed by APPEND.. APPEND uses the byte at offset 3Dh in the PSP (see #01378 at INT 21/AH=26h) to store the flag telling it to overwrite the filename
BUG: DOS 4.0 APPEND reportedly overwrites DS:DX instead of DS:SI for INT 21/AH=6Ch
See Also: INT 21/AH=26h - INT 21/AH=4Eh
Category: File Manipulation - Int 2Fh - D
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