Int 21 Fn 53  - DOS 2+ Internal - Translate BIOS Parameter Block To Drive  [D]

   AH = 53h
   DS:SI -> BIOS Parameter Block (see below)
   ES:BP -> buffer for Drive Parameter Block (see AH=32h for format)

Return: ES:BP buffer filled

Note:  for DOS 3+, the cluster at which to start searching is set to 0000h
     and the number of free clusters is set to FFFFh (unknown)

Format of BIOS Parameter Block:
Offset Size    Description
 00h   WORD    number of bytes per sector
 02h   BYTE    number of sectors per cluster
 03h   WORD    number of reserved sectors at start of disk
 05h   BYTE    number of FATs
 06h   WORD    number of entries in root directory
 08h   WORD    total number of sectors
       for DOS 4+, set to zero if partition >32M, then set DWORD at
         15h to actual number of sectors
 0Ah   BYTE    media ID byte
 0Bh   WORD    number of sectors per FAT
---DOS 3+---
 0Dh   WORD    number of sectors per track
 0Fh   WORD    number of heads
 11h   DWORD   number of hidden sectors
 15h 11 BYTEs  reserved
---DOS 4+ ---
 15h   DWORD   total number of sectors if word at 08h contains zero
 19h  6 BYTEs  ???
 1Fh   WORD    number of cylinders
 21h   BYTE    device type
 22h   WORD    device attributes (removable or not, etc)
---DR-DOS 5+ ---
 15h   DWORD   total number of sectors if word at 08h contains zero
 19h  6 BYTEs  reserved
---European MS-DOS 4.00---
 15h   DWORD   total number of sectors if word at 08h contains zero
       (however, this DOS does not actually implement >32M partitions)