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Function  44h	 I/O Control for Devices (IOCTL)  Get or Set Device Information

entry AH 44h

AL 0Dh Block Device Request (DOS 3.3+)

BL drive number (0=default)

CH major subfunction

CL minor subfunction

40h set device parameters

41h write logical device track

42h format and verify logical device track

60h get device parameters

61h read logical device track

62h verify logical device track

DS:DX pointer to parameter block


file: /Techref/Int/21f/44sf/0D.htm, 0KB, , updated: 1999/4/26 11:35, local time: 2018/1/17 20:14,
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