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76/77 is the only appearance Re: What's "IBMLZRW.EXE" for?

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Just took a pass through the other diags disks... The 9576/9577 Diags 
disk seems to be the ONLY refdisk or diags disk to have "IBMLZRW.EXE"

The truth is out there...

Louis Ohland wrote:
> While confusing folks about refdisks, I was snuffling about, looking for 
> a wide variety of things. SC.EXE versions, DEV129.DGS versions, string 
> theory...
> 
> Looking through the 9576/9577 Diagnostics diskette,
> https://ardent-tool.com/disks/7677diag.zip
> 
>   I noticed "IBMLZRW.EXE", and being a file name that I cannot EVER 
> remember seeing, it drew me in.
> 
> Using a hex editor, the only human readable stuff was sparse:
> 
> USAGE: IBMLZRW [/u] [/d]
> $Licensed Material - Property of IBM (C) Copyright IBM Corp. 1981, 1993 
> All Rights Reserved.IBMLZRW not loaded
> $IBMLZRW removed
> $IBMLZRW cannot be removed
> $IBMLZRW already resident
> 
> "LZRW" is a compression technique AFAIK.
> http://ross.net/compression/index.html
> 
>   The author of LZRW walked away from it after some patents were 
> published. Nowadays, with monstrously XBOX HUUGGEE drives and GB of RAM, 
> compression is nowhere near as significant as it was.

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Thread

What's "IBMLZRW.EXE" for? Louis Ohland <ohland@charter.net> - 2026-08-01 09:14 -0500
  76/77 is the only appearance Re: What's "IBMLZRW.EXE" for? Louis Ohland <ohland@charter.net> - 2026-08-01 09:29 -0500
    Re: 76/77 is the only appearance Re: What's "IBMLZRW.EXE" for? Louis Ohland <ohland@charter.net> - 2026-08-01 09:31 -0500
      Tentative view of IBMLZRW functions Re: What's "IBMLZRW.EXE" for? Louis Ohland <ohland@charter.net> - 2026-08-02 07:09 -0500

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