From owner-freebsd-hackers  Thu Oct 19 10:20:17 1995
Return-Path: owner-hackers
Received: (from root@localhost)
          by freefall.freebsd.org (8.6.12/8.6.6) id KAA25835
          for hackers-outgoing; Thu, 19 Oct 1995 10:20:17 -0700
Received: from brasil.moneng.mei.com (brasil.moneng.mei.com [151.186.20.4])
          by freefall.freebsd.org (8.6.12/8.6.6) with ESMTP id KAA25829
          for <hackers@freebsd.org>; Thu, 19 Oct 1995 10:20:13 -0700
Received: (from jgreco@localhost) by brasil.moneng.mei.com (8.7.Beta.1/8.7.Beta.1) id MAA28328; Thu, 19 Oct 1995 12:19:03 -0500
From: Joe Greco <jgreco@brasil.moneng.mei.com>
Message-Id: <199510191719.MAA28328@brasil.moneng.mei.com>
Subject: Re: Bragging rights..
To: dennis@etinc.com (dennis)
Date: Thu, 19 Oct 1995 12:19:02 -0500 (CDT)
Cc: hackers@freebsd.org
In-Reply-To: <199510191725.NAA27921@etinc.com> from "dennis" at Oct 19, 95 01:25:47 pm
X-Mailer: ELM [version 2.4 PL24]
Content-Type: text
Sender: owner-hackers@freebsd.org
Precedence: bulk

> Actually the bitsurfers can be gotten for well under $300. and our ET/5025 with
> RS-232 interface is $400. So you're talking under $700. for a lot more bandwidth
> and none of the async CPU overhead. Plus if you wanted to go to 56k or frame or
> frac T1  you'd already have your adapter card.

Aside from the avoidance of CPU overhead, what does the ET/5025 buy me?

(I don't understand "a lot more bandwidth" - I can definitely do 115200 with
a 16550, and since terminal adapters generally cannot do 128000 speeds in
async mode, the ET/5025 would be limited to the same speed...  certainly no
more bandwidth at all....).

Now if you can find yourself a TA that can do 230.4 or 460.8, and the
ET/5025 is able to do that in async, that might be a benefit.  I've
retrofitted 16550 ports to run at such speeds and the CPU does eventually
reach a point where it has difficulty keeping up on a consistent basis
(although this is more likely a driver issue...?)

... Joe

-------------------------------------------------------------------------------
Joe Greco - Systems Administrator			      jgreco@ns.sol.net
Solaria Public Access UNIX - Milwaukee, WI			   414/342-4847