function reads a sector or sectors from disk into memory parameter block format for PC/AT and PS/2 fixed disks INT 13H (0x13) Function 0A H (0x0A or 10) Read sector long

The parameter block format for PC/AT and PS/2 fixed disks is as follows:

INT 13H (0x13)

Function 0A H (0x0A or 10) >> Read sector long

Call with: AH = 0AH
AL = number of sectors
CH = cylinder
CL = sector
DH = head
DL = drive
80H-FFH fixed disk
ES: BX = segment: offset of buffer

Returns:If function successful
Carry flag = clear
AH = 00H
AL = number of sectors transferred

If function unsuccessful
Carry flag = set
AH = status

Comments:
This function reads a sector or sectors from disk into memory along with a 4 byte Error Correcting Code (ECC) code for each sector. Unlike the normal Read sector function (INT 13H (0x13) Function 02H), ECC errors are not automatically corrected. Multi sector transfers are terminated after any sector with a read error.

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