Filesystem Image

The filesystem image for the NR261UM is a simple flatfile database, consisting of a number of blocks.

The first block is a listing of directories, null terminated :

 

 0B00 0000 Entries in Block
 3601 0000 Block Size

 

 5C 48 44 44 34 5C 53 63 72 65 65 6E 44 61 74 61 00 \HDD4\ScreenData
 5C 48 44 44 34 5C 53 63 72 65 65 6E 44 61 74 61 5C 41 56 00 \HDD4\ScreenData\AV
 5C 48 44 44 34 5C 53 63 72 65 65 6E 44 61 74 61 5C 41 56 5C 69 6D 61 67 65 66 69 6C 65 73 00 
 \HDD4\ScreenData\AV\imagefiles

 

 The second block is a File index:

 

5D00 0000  Entries in Block
D512 0000  Block Size

 

containing a sequence of File records

 

 F063 0100 File Size

 5C48 4444 345C 5363 7265 656E 4461 7461 5C41 565C 4156 2E73 6372 6E00

( \HDD4\ScreenData\AV\AV.scrn)

 File Name

At the end of this block, the file data starts.

As always - I've knocked together a tiny unpacker for this. Its available here .

If you just happen to be nosy, an unpacked image resides here . 

I have left the creation of a packer as an exercise : there is enough information above to write one easily.

 

For the curious : 

The symb files appear to be image libraries.

The tbl files are the string localisations. ( I count 11 different languages. 12 if you include American English )

I have _no_ idea what the scrn files are. ( Yes, I realise it probably stands for "screen" ). 

 

Image