Home » Archimedes archive » Micro User » MU 1992-08.adf » ArcFSExtra » Documents/Attributes

Documents/Attributes

This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.

Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.

Tape/disk: Home » Archimedes archive » Micro User » MU 1992-08.adf » ArcFSExtra
Filename: Documents/Attributes
Read OK:
File size: 016C bytes
Load address: 0000
Exec address: 0000
Duplicates

There is 1 duplicate copy of this file in the archive:

File contents
ArcFS 0.50/2.00 Documentation
-----------------------------

File Attributes
---------------

The CRC is stored in the top 16 bits and the no. of bits compression (where
appropriate) is stored in the next 8 bits. File access rights are stored in
the bottom 8 bits. (N.B. the top 24 bits were used to store the compressed
file length in 0.30 and earlier versions.)
00000000  41 72 63 46 53 20 30 2e  35 30 2f 32 2e 30 30 20  |ArcFS 0.50/2.00 |
00000010  44 6f 63 75 6d 65 6e 74  61 74 69 6f 6e 0a 2d 2d  |Documentation.--|
00000020  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |----------------|
00000030  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 0a 0a 46 69 6c  |-----------..Fil|
00000040  65 20 41 74 74 72 69 62  75 74 65 73 0a 2d 2d 2d  |e Attributes.---|
00000050  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 0a 0a 54 68  |------------..Th|
00000060  65 20 43 52 43 20 69 73  20 73 74 6f 72 65 64 20  |e CRC is stored |
00000070  69 6e 20 74 68 65 20 74  6f 70 20 31 36 20 62 69  |in the top 16 bi|
00000080  74 73 20 61 6e 64 20 74  68 65 20 6e 6f 2e 20 6f  |ts and the no. o|
00000090  66 20 62 69 74 73 20 63  6f 6d 70 72 65 73 73 69  |f bits compressi|
000000a0  6f 6e 20 28 77 68 65 72  65 0a 61 70 70 72 6f 70  |on (where.approp|
000000b0  72 69 61 74 65 29 20 69  73 20 73 74 6f 72 65 64  |riate) is stored|
000000c0  20 69 6e 20 74 68 65 20  6e 65 78 74 20 38 20 62  | in the next 8 b|
000000d0  69 74 73 2e 20 46 69 6c  65 20 61 63 63 65 73 73  |its. File access|
000000e0  20 72 69 67 68 74 73 20  61 72 65 20 73 74 6f 72  | rights are stor|
000000f0  65 64 20 69 6e 0a 74 68  65 20 62 6f 74 74 6f 6d  |ed in.the bottom|
00000100  20 38 20 62 69 74 73 2e  20 28 4e 2e 42 2e 20 74  | 8 bits. (N.B. t|
00000110  68 65 20 74 6f 70 20 32  34 20 62 69 74 73 20 77  |he top 24 bits w|
00000120  65 72 65 20 75 73 65 64  20 74 6f 20 73 74 6f 72  |ere used to stor|
00000130  65 20 74 68 65 20 63 6f  6d 70 72 65 73 73 65 64  |e the compressed|
00000140  0a 66 69 6c 65 20 6c 65  6e 67 74 68 20 69 6e 20  |.file length in |
00000150  30 2e 33 30 20 61 6e 64  20 65 61 72 6c 69 65 72  |0.30 and earlier|
00000160  20 76 65 72 73 69 6f 6e  73 2e 29 0a              | versions.).|
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