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Trying to figure out the ND/SINTRAN floppy-disk file system

per

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Jan 21, 2008
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Western Norway
I am at the time working on imaging some 8" floppies written by a Norsk Data machine once, and right now I am trying to figure out the file system. I do find something that looks like a directory structure on the 77th track, but I am having problems finding any information what the numbers mean.

The table has entries like this:
Code:
90 00 4F 52 4D 27 00 00 00 00 00 00 00 00 00 00   -   ..ORM'..........
00 00 50 52 4F 47 00 02 00 02 7F FF 00 08 00 00   -   ..PROG..........
00 00 00 02 00 00 00 03 89 20 D7 D2 91 66 7C 23   -   ........‰ ×Ò‘f|#
89 20 D7 D3 00 00 00 0A 00 00 49 FF 40 00 00 3E   -   ‰ ×Ó......I.@..>

Judging from strings other places in the image, it seems like this program is a Norwegian implementation of the game of Snake. I'm pretty sure this block contains info about where the file resides on the disk, but yeah, finding more information on how to actually extract this data seems to be a bit of a challenge.
 
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