Int 13 Fn 24  - Hard Disk - Ps/1 And Newer Ps/2 - Set Multiple Mode        [d]

   AH = 24h
   AL = number of sectors per block (2,4,8,16)
   DL = drive number (80h,81h)

Return: CF clear if successful
   CF set onerror
   AH = status (see #0166 at AH=01h)
Desc:  specify how many sectors the controller should transfer as a group
     between operation-complete interrupts when using the Read Multiple
     and Write Multiple functions (AH=21h,AH=22h)

Notes: set the number of sectors to 0 to disable multiple-transfer mode
   the maximum value for the block size depends on the fixed disk
     drive type.  The value is stored in byte 15h of the fixed disk
     drive parameter table that is created by POST.
   the byte at address 0040h:0074h is set to status of operation.

See Also: AH=21h"PS/1",AH=22h"PS/1",AH=23h"PS/1",AH=25h"PS/1"