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- Path: sparky!uunet!munnari.oz.au!manuel.anu.edu.au!manuel.anu.edu.au!usenet
- From: bear@nuc.anu.edu.au (Bernhard Fabricius)
- Newsgroups: comp.sys.dec
- Subject: Re: What is an ESAR chip
- Date: 22 Jan 1993 04:29:37 GMT
- Organization: Nuclear Physics, ANU
- Lines: 36
- Distribution: world
- Message-ID: <1jnt7hINNfk9@manuel.anu.edu.au>
- References: <1993Jan21.191137.3419@athena.mit.edu>
- Reply-To: BEAR@NUC.ANU.EDU.AU
- NNTP-Posting-Host: 150.203.19.47
-
-
- In article <1993Jan21.191137.3419@athena.mit.edu>, goeke@space.mit.edu (Robert F. Goeke) writes:
- >I got an upgrade kit to convert one of our 5000/200s to a 240. In the
- >instructions they tell you to remove the ESAR chip (located in a socket on the
- >motherboard) from the 200 and put it into the 240. 'Course there already was an
- >ESAR chip in the 240 motherboard as shipped. . . but that's another story. The
- >physical chip (a 16 pin DIP) is labled "ENET ADRS".
- >
- >So what is it, and why whould you change it out?
-
- I don't claim that I KNOW the answer, but I can make a GUESS:
-
- ENET ADRS sounds pretty much like "EtherNET ADdReSs", don't you think ?
- I would guess this is a way of keeping you EtherNet hardware address.
-
- And why would you want to do that ? Well, several software developers use the
- EtherNet HW address in a primitve licensing scheme to ensure you only run their
- stuff on the one machine you bought it for. By retaining the address chip, you
- can still run the software on the new machine. (You might still be breaking
- the licence agreement, though, if it also is capacity based.)
-
- Does this make sense ? Any comments ??
-
- Cheers
-
-
- Bernhard
- --------------------------------------------------------------------------------
- Dr Bernhard Fabricius |
- Academic VAX/VMS Support | "I am a Bear of Very Little Brain,
- Department of Nuclear Physics | and long words Bother me."
- Australian National University |
- | - A.A. Milne
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