Function 69h Get or Set BIOS Parameter Block Extention (DOS 4.0)
entry AH 69h
AL 00 Get BPBE
DS:DX Buffer Address
return copy of BPBE in Buffer.
01 Write buffer to BPBE
DS:DX Buffer Address
return Buffer contents written to disk as BPBE.
BL Drive Number
return CF set if error
AX error code
note 1) Ref: PC Magazine Vol 11 No 13 Pg 495
2) The BIOS Parameter Block Extension is an addition to the BIOS Parameter
Block added in DOS 4.0 which contains an Information Level(?), Diskett
Serial Number, a copy of the volumn lable, and the name of the file
system used.
Offset Length Name
-- ------- ---------------------------------
00 WORD Information Level(?)
02 LONGINT Serial Number
11 BYTE Volumn Lable (?)
8 BYTE File System ('FAT12' or 'FAT16')
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