Article View: comp.sys.ibm.pc.misc
Article #12129Re: Mysterious EXE compressor: MZ
From: LIM O
Date: Fri, 15 May 1992 12:30
Date: Fri, 15 May 1992 12:30
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2211 bytes
In <1992May14.190913.352@IRO.UMontreal.CA> jalbert@IRO.UMontreal.CA (Francois Jalbert) writes: >Dear fellow DOS users, >I am about to release my fourth freeware package to SIMTEL, and I'd like some >information about run-time EXE compressors. >In the past, I have avoided using PK-Lite since this is not a freeware program >and I didn't know if I could use it in my freeware releases without being >morally bound to register it. >This is why I prefer the freeware LZEXE 0.91, which is just as good. >However, I came yesterday across another EXE compressed with some mysterious >MZ program. That is, the first bytes of the compressed EXE are MZ, with >nothing else to help identify the compressor used. This is not the first time >by far that I encounter such EXE files and I decided this time to look into it >some more. MZ is the first two bytes of every EXE file (that works!). It stands for the initials of one of the designers of MS-DOS I forget his name. The program is probably something else. I only have one other run-time compres-sor and that is something called Diet. It also does runtime compressing of other files but that is an option. the compression rate is _very_ bad, even worse than say, PK-Lite. it uses a method called Adaptive LZW. I don't use it but from what i hear it's not bad. Hope that Helps, Tihor.
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<6485@stan.xx.swin.oz.au>Path:
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 10d683,6ea24c497ee63291 X-Google-Attributes: gid10d683,public X-Google-Thread: f53ba,6ea24c497ee63291 X-Google-Attributes: gidf53ba,public X-Google-ArrivalTime: 1992-05-16 12:54:20 PST Path: arc1-ca.pugleaf.net!sparky!uunet!sun-barr!west.West.Sun.COM!sunaus!metro!munnari.oz.au!goanna!minyos.xx.rmit.oz.au!stan!h8ed013 From: h8ed013@stan.xx.swin.oz.au (LIM O) Newsgroups: comp.sys.ibm.pc.misc,aus.computers.ibm-pc Subject: Re: Mysterious EXE compressor: MZ Message-ID: <6485@stan.xx.swin.oz.au> Date: 15 May 92 12:30:35 GMT References: <9213510.16276@mulga.cs.mu.OZ.AU> <_4zv78m@rpi.edu> <1992May14.190913.352@IRO.UMontreal.CA> Followup-To: comp.sys.ibm.pc.misc Distribution: aus Organization: Computer Centre, Swinburne Inst. of Tech., Melbourne, Australia. Lines: 29