Re: 141K Disk Image

[Andy McFadden <fadden@fadden.com>]

sers <sunfun82@yahoo.ca> wrote:
> One example is the Rescue Raiders game.  It always ends up as 141 KB.
> It's size is 143,488 bytes when unzipped.

I'm still not sure what file you're downloading.  However, I tried
Asimov/unsorted/rescue.zip:

Archive:  Asimov/unsorted/rescue.zip
 Length   Method    Size  Ratio   Date   Time   CRC-32    Name
--------  ------  ------- -----   ----   ----   ------    ----
  143488  Defl:N    77978  46%  05-30-94 18:30  22ae00bd  Rescue.do
--------          -------  ---                            -------
  143488            77978  46%                            1 file


It seems to have an extra 128 bytes at the end, but the first few
bytes at the end aren't 00:

0000000: 01a5 27c9 09d0 18a5 2b4a 4a4a 4a09 c085  ..'.....+JJJJ...
0000010: 3fa9 5c85 3e18 adac 086d ad08 8dac 08ae  ?.\.>....m......
[...]
0022fe0: d5aa 1ed3 f0ae 24d7 f0b2 2b7b f3b6 499f  ......$...+{..I.
0022ff0: f33d bbe8 bd1f c6fa 44a9 efc4 1ded 47a4  .=......D.....G.
0023000: afec ee00 0000 0000 0000 0000 0000 0000  ................
0023010: 0000 0000 0000 0000 0000 0000 0000 0000  ................
0023020: 0000 0000 0000 0000 0000 0000 0000 0000  ................
[...]


Now it gets weird.  There's another copy of rescue raiders here:

Asimov/images/games/simulation/rescue_raiders.dsk.gz

It's also brain damaged, being 3 bytes longer than it should be:

method  crc     date  time           compressed        uncompressed  ratio uncompressed_name
defla d52fb902 Jun 27 10:05               77122              143363  46.2% Asimov/images/games/simulation/rescue_raiders.dsk

It has the same data at the end:

0022fd0: c431 7bd3 5b6c 5b76 89c3 a3ff ace0 2ac8  .1{.[l[v......*.
0022fe0: d5aa 1ed3 f0ae 24d7 f0b2 2b7b f3b6 499f  ......$...+{..I.
0022ff0: f33d bbe8 bd1f c6fa 44a9 efc4 1ded 47a4  .=......D.....G.
0023000: afec ee                                  ...


There's yet another copy here:

Asimov/images/games/action/rescue_raiders.dsk.gz

It's also 143488 bytes long when uncompressed.

Unless I'm missing something, all copies of Rescue Raiders on Asimov are
tweaked.

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