Format of JAMINFO v1.10 structure:
Offset	Size	Description	)
 00h 25 BYTEs	extended BIOS parameter block (BPB)
 19h 11 BYTEs	???
 25h	DWORD	total number of sectors in JAM archive file
		(size of compressed data area)
 29h	BYTE	flags (see #02833)
 2Ah 127 BYTEs	full JAM archive file name
 A9h	WORD	the number of fragments in archive file
 ABh 96 BYTEs	archive file fragmentation list -
		array of 16 FRAGMENT structures (see #02834)
10Bh	DWORD	address of the host-drive DPB (Drive Parameter Block)
10Fh	DWORD	number of free sectors in JAM archive file
113h	WORD	device status word (see #02835)
SeeAlso: #02832