[NCSA-discuss] SCO nfs
Joseph Mack NA3T
jmack at wm7d.net
Wed May 9 08:11:40 EDT 2012
On Wed, 9 May 2012, Brad Oaks wrote:
> On Wed, May 9, 2012 at 1:19 AM, Joseph Mack NA3T <jmack at wm7d.net> wrote:
>> I've never seen the serial card before and didn't know such things existed.
>> I didn't look at it closely except to note the thick cable coming out of it
>> and that there were several W95 boxes talking to it through Wyse terminal
> They were quite common when the system you're dealing with was first
> installed. :)
thanks for bringing me upto speed on this.
> Some customers would have us rewire their office for
> ethernet and ended up putting in a hub and taking out the
> multiport serial cards. But some of the buildings were so
> tough to run new cables in that the customer decided to
> stick with the serial cabling that was already run to
> every desk.
I expect the guy I'm talking to will take the "if it ain't
broke don't fix it attitude". In a lot of ways I agree with
him. He wants to run a business, not be a show room for
computer technology. The idea of using a vt100 with curses
in 2012 seems absurd though.
> Occasionally there would be application logic that was specific to
> which serial port the user was logging in from (e.g. different menus
> for different departments). Each user of the application often did
> not have a system login, but logged directly into the application
> which had direct control over the serial port (as opposed to getty and
> a login process having control). This changed when we migrated them
> to using telnet, and we had to modify the application a bit to key off
> of the login or group information of the system accounts instead of
> from the serial port number (which was a proxy for knowing which desk
> the terminal was on).
I wouldn't have known where to look for this.
> You should be able to tell by looking over a user's shoulder whether
> it is a system login or if they are immediately in the application
> (including authenticating with the app with a username and password).
> The prompt is a good clue.
> The serial cards were optional addons, and the ones that I
> remember needed drivers from the card manufacturer. They
> could make up a significant portion of the cost of a
> server, too. DigiBoard is the product line I remember
> using most, but there were others. The company Digi is
> still around and making serial cards.
SCO really had the customers bend over and take it. Even
10yrs ago ethernet was it, in everyone else's world
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
jmack (at) wm7d (dot) net - azimuthal equidistant map
generator at http://www.wm7d.net/azproj.shtml
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