Int 13 Fn 1A  - Future Domain Scsi Controller - Get Scsi Partial Medium C  [d]

   AH = 1Ah
   CH = track (bits 8,9 in high bits of CL)
   CL = sector (01h to number of sectors/track for drive)
   DH = head
   DL = hard drive ID

Return: CF set on error
   AH = status code (see AH=01h)
   CX:DX = logical block number of last quickly-accessible block after
       given block

Notes: sends SCSI Read Capacity command with the PMI bit set to obtain the
     logical block address of the last block after which a substantial
     delay in data transfer will be encountered (usually the last block
     on the current cylinder).  No translation to 512 byte sectors is
     performed on the result if data is stored on the disk in other than
     512 byte sectors.
   the TMC-950 does not support any Future Domain BIOS calls; instead,
     it provides a full CAM implementation (see INT 4F/AX=8100h)

See Also: AH=15h,AH=19h"SCSI"