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  1.  Home
  2. MI400
  3. October 2003

RE: compression algorithms

thanks, Dave.


-----Original Message-----
From: mi400-bounces@xxxxxxxxxxxx [mailto:mi400-bounces@xxxxxxxxxxxx]On
Behalf Of Dave McKenzie
Sent: Thursday, October 02, 2003 8:50 PM
To: MI Programming on the AS400 / iSeries
Subject: Re: [MI400] compression algorithms

> Also, are these the algorithms used when a save file is compressed and
> compacted?

No, strangely enough, save files are compressed with the Convert Character
to SNA (CVTCS) MI instruction, which does simple run-length encoding (RLE)
in which strings of repeated characters are coded as a length byte and the
repeated byte.  See:

http://publib.boulder.ibm.com/iseries/v5r1/ic2924/tstudio/tech_ref/mi/CVTCS.
htm

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