Date : Fri, 12 Jun 2009 18:03:44 +0100
From : jumbos.bazzar@... (Mark Haysman)
Subject: Econet Rom version differences
Hi.
It was that stations 240-254 had priority over the *PROT protection system,
so even if you were proctected, on a station above 240, you could view and
generally interfere with stations below 240. Great for use by teachers who
wanted to see what students were up to, who couldn't then protect themselves
from the teachers station.
They phased it out probably because they found it pointless and annoying
that students could undo 4 screws and change a few links, and change their
Beebs to "God" mode, and cause havoc on the Econet - disguising their Econet
station number by using a small machine code program that ran via !&287, so
the even a CTRL-BREAK would still disguise it. I would never condone doing
or take part in such a thing of course :-)
Once that little trick was discovered, I remember our lab administrator
ended up putting switches on each computer so they could be disconnected
from the network, beacuse someone (**COUGH**) would send a program to the
teacher station 251, which relayed commands and keyboard buffer readers back
to other protected stations, bypassing the protection. Ahh the scool science
labs....fun days....
Mark.
----- Original Message -----
From: "Ian Wolstenholme" <bbcmailinglist@...>
To: <bbc-micro@...>
Sent: Friday, June 12, 2009 2:14 PM
Subject: Re: [BBC-Micro] Econet Rom version differences
I haven't got a list of changes between the versions, but the principal
difference between NFS 3.60 and earlier versions is that the earlier
versions
designated Stations above a certain number (240 I think) as protected
stations and they operated slightly differently in terms of the way you
could
communicate with them from certain network ports. I think there is more
information on this in the Econet System User Guide.
I'm not sure what the difference is between 3.34 and 3.35K, it might be
that one is EPROM and the other is ROM but I could well be wrong.
I always thought that both DFS 1.20 and NFS 3.60 were only officially
released as DNFS 1.20. Again I could be wrong, but if the problem is
with NFS 3.60 it might be a user modified version.
Best wishes,
Ian
----- Original Message -----
From: Andy Ford [mailto:acorn@...]
To: bbc-micro@...
Sent: Thu, 11 Jun 2009 19:15:00 +0100
Subject: [BBC-Micro] Econet Rom version differences
I was just wondering if there was either a change log list or perhaps
someone had some kind of details (bug fixes ?) explaining the
differences between NFS 3.34 and NFS 3.60 for a B ?
I only have the actual images for 3.34 and also one called 3.35K , but
have a physical 3.60 NFS rom (not the one that's part of the DNFS rom,
its a stand-alone NFS rom)
I'm trying to solve a bit of a possible conflict / bug with a game (will
go into detail about that if needed but I wont at the moment to keep
this mail short and to the point) :)
Thanks :D
Andy.
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