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AX = 4401h BX = handle (must refer to character device) DX = device information word (see #01423) (DH must be zero for DOS version prior to 6.x)
Return:
CF clear if successful CF set on error AX = error code (01h,05h,06h,0Dh) (see #01680 at AH=59h/BX=0000h)
Note: This function was not supported by Digital Research's DOS Plus
See Also: AX=4400h - INT 2F/AX=122Bh
Category: DOS Kernel - Int 21h - D
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