The Analyze infomation of CD-ROM in 3DO

ec2-3-144-23-138.us-east-2.compute.amazonaws.com , 18490th

1995/12/21 UPDATED

File structure

char / 1byte, int / 2byte, long / 4byte data-length in list.




ROOT directory

ROOT directory's position are recorded in the top block.

struct	TDO_TopBlk	{
	char		unknown1[0x28];
	char		Mark_ID[8];	/* Mark_ID is 'CD-ROM' */
	char		unknown2[0x34];
	unsigned long	NofDirEnt;	/* Number of backup entries */
	unsigned long	RootDir;	/* Position of root-dir */
};




Directory structure

Directory structure (Header)

Offset	Length	Description
+0x00	4	Current page num, 0xffffffff means it is last page.
+0x04	8	Unknown
+0x0c	4	Size of this directory
+0x10	4	Unknown
+0x14	?	File entries(*1)





*1 File entry structure

Offset	Length	Description
+0x00	4	File attribute(*2)
+0x04	4	Unknown
+0x08	4	File extention
+0x0c	4	Unknown
+0x10	4	File size (byte)
+0x14	4	File size (block)
+0x18	8	Unknown
+0x20	32	File name
+0x40	4	(Number of copy entry) - 1
+0x44	4	Start block of this file
(+0x48)	4	Start block of this file (copy, variable length)
(+0x4c)	4	Start block of this file (copy, variable length)





*2 Known file attirbutes

Value	Description
0x??????02	Plain file
0x??????06	Disc label
0x??????07	Sub directory
0x40??????	End of directory in this block, but continue next block
0xc0??????	End of directory in this block, no continue next block





Reader programs

SCSI CDROM Drive and ASPI-driver require.



Download is here => 3do_cp10.lzh





Listing files

option '-u' defines SCSI-ID in CDROM(require).

option '-a' # of Host Adapter. default is '0'.

[example]

3do_dir -u1

output example




Copy a file

option '-u', '-a' same as 3do_dir.exe.

separate directory names by slash '/' in source file name.

[example]

3do_cp -u1 /data/SND/Sound1.AIFF snd01.aif

Other utilities




unpak.exe	extract *.PAK file in Sailor-Moon.
unsnd.exe	extract *.BIN sound archive in SuperStreetFighter2X.
adpcm.shar	extract an ADP4 compressed sound file.

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