Path: utzoo!attcan!uunet!portal!cup.portal.com!raf
From: raf@cup.portal.com (Robert A Freed)
Newsgroups: comp.sys.ibm.pc
Subject: Re: SEA ARC Rel 5.30
Message-ID: <10929@cup.portal.com>
Date: 5 Nov 88 18:49:10 GMT
References: <4979@whuts.UUCP>
Organization: The Portal System (TM)
Lines: 35

In article <4979@whuts.UUCP> 2212msr@whuts.UUCP (ROBIN) writes:
>SEA's ARC Rel 5.3 was released on 10/24.  In my limited
>testing it runs as fast or faster than PKARC.  Large files,
>especially .COM or .EXE, seem to pack slightly smaller w/PKARC though.
>Difference of <10% on 120K file.)

It's not too hard to understand this sudden performance improvement in
SEA's product.  Without additional comment, I present the following
(from the Exec-PC BBS, 414/964-5160).

[Captured message follows...]

Conf: PC APPLICATIONS Topic: FILE COMPRESS'N  Ref: 1F4J2331 Date: 11/04/88
From: PHIL KATZ (Leader)                                    Time: 03:38 pm
  To: GRANT ELLSWORTH (Rcvd)
Subj: R: ARC CLONE / UPDATED

Grant,

I said this to you in private, but I thought I would repeat it here
for all to read.

SEA's latest program QARC is derived from PKARC.  I loaded QARC
into DEBUG and found the same assembly/machine code for Crunching,
Huffman Squeezing, 'garbling', and even CRC-16 calculation as in
PKARC 3.6.  This is what I noted from making a cursory look
at QARC.  I also noted that it creates identical archives to
PKARC or PKPAK if Squashing is disabled.

>Phil>

[End of captured message]

-- Bob Freed                        Internet:  raf@cup.portal.com
                                    UUCP:  ...!sun!portal!cup!raf