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AH = 05h ---DOS 3.x--- AL = extended error code (not zero) ---DOS 4.0+ --- AL = error type 01h DOS extended error code 02h parameter error BX = error code
Return:
CF clear if successful ES:DI -> ASCIZ error message (read-only) AL = completion state 00h message requires completion with device name, drive, etc. 01h message is complete as returned CF set if error code can't be converted to string AX,DI,ES destroyed other flags corrupted
Notes: Called at start of COMMAND.COM's default critical error handler if installed by a user program, allowing partial or complete overriding of the default error messages. Subfunction 02h is called by many DOS 4 external programs. DR DOS's COMMAND.COM appends additional info ("0 files copied") to the returned string
See Also: AX=0500h - AX=122Eh - INT 24
Category: Shells/Command Interpreters - Int 2Fh - D
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