ci-macpaw

**paracelsus**: ``` Well, I finally made some progress: It is LZS, but with some kind of extra header, and with all bytes inverted before and after compression for no good...

**d235j.1**: ``` A document I found claims that what you're calling DD B was originally DD C and DD B had been dropped. I'll see if I can find the...

**d235j.1**: ``` I'm looking for old versions of DD. The chip on the card is a Stac 9703PC4. I'll run the testcases as soon as possible. Size isn't an issue,...

**paracelsus**: ``` Oh, that is interesting. I put together eight fields of various complexity to run through it. The last ones are a little big, if that turns into a...

**d235j.1**: ``` I have a card, and it's in a working Mac. Compression with the card is over ten times faster than with software. If you provide me with an...

**paracelsus**: ``` I suspect it is LZS. The Sigma cards supposed used the Stac 9703 chip, and according to a paper I found, the Stac 9703 should implement LZS. However,...

**d235j.1**: ``` Perhaps it's just LZS: http://en.wikipedia.org/wiki/Lempel–Ziv–Stac ```

**d235j.1**: ``` It's hard to say, since this was by Stac, it may have been used in Stacker and possibly Microsoft DoubleSpace (which they ripped off from Stac). ```

**paracelsus**: ``` Seems it was used elsewhere too and is simple and documented. I'll have to have a look, it might be easy to support. ```

**paracelsus**: ``` Interesting. Is the algorithm documented anywhere? ```