.vol

.vol files (probably for "volume") are large container files for multiple files.

Header

10 common bytes:

lang0 56 4F 4C 4E 00 01 00 00 05 03 0F 00 len: D484

shell0 56 4F 4C 4E 00 01 00 00 05 06 1E 00 len: 86B052

shell1 56 4F 4C 4E 00 01 00 00 0A 01 05 00 len: 10EE1

shlsound 56 4F 4C 4E 00 01 00 00 05 01 05 00 len: 206B68

simlang 56 4F 4C 4E 01 00 00 00 05 02 0A 00 len: A1F1

simalert 56 4F 4C 4E 01 00 00 00 05 07 23 00 len: B6B10

simpatch 56 4F 4C 4E 01 00 00 00 0A 29 CB 00 len: 11AF5

simsound 56 4F 4C 4E 01 00 00 00 05 03 0F 00 len: 22F692

simvoicg 56 4F 4C 4E 01 00 00 00 05 01 0A 00 len: 64DCAE

simvoice 56 4F 4C 4E 01 00 00 00 05 01 0A 00 len: 6B7567

simvoicf 56 4F 4C 4E 01 00 00 00 05 01 0A 00 len: 6ECD7F

simvol0 56 4F 4C 4E 01 00 00 00 05 27 C1 00 len: 1D63B29

zones 56 4F 4C 4E 01 01 00 00 05 03 0F 00 len: 208969

• • The first four bytes ("VOLN" in ASCII) indicate a ES volume file (magic bytes).

  • The 5th byte is apparently 0x01 if the file is used in the simulator and 0x00 if used in the shell.

  • The 6th byte is apparently 0x01 if the file is used in the shell and 0x00 if used in the simulator

  • Two bytes are ignored and always zero.

  • The 9th byte is some kind of counter (currently unknown)

  • The 10th byte is the directory count (how many directories are in the volume)

  • The 11th and 12th byte determine how many bytes the directory list has (little-endian). simvol0 and simpatch are the leaders in the directory count.

Then, with the 13th byte, the directory list follows. Each directory is terminated by a backslash (\, ASCII 0x5C) followed by a null-byte. The nullbyte of the last directory name is included in the length calculation for the 11th and 12th byte.