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From: michaelv@MindBender.HeadCandy.com (Michael L. VanLoon)
Newsgroups: comp.os.386bsd.questions,comp.protocols.ppp,comp.os.linux.help
Subject: Re: PPP at 115200 bps (FreeBSD or Linux?) to a Xyplex MX1620?
Date: 09 Oct 1994 04:06:25 GMT
Organization: HeadCandy Associates... Sweets for the lobes.
Lines: 31
Message-ID: <MICHAELV.94Oct8230628@MindBender.HeadCandy.com>
References: <1994Oct6.153307.1@wittenberg.edu>
<MICHAELV.94Oct8173816@MindBender.HeadCandy.com>
<JKH.94Oct8172132@freefall.cdrom.com>
NNTP-Posting-Host: mindbender.headcandy.iastate.edu
In-reply-to: jkh@freefall.cdrom.com's message of 09 Oct 1994 00:21:31 GMT
In article <JKH.94Oct8172132@freefall.cdrom.com> jkh@freefall.cdrom.com (Jordan K. Hubbard) writes:
I have two Practical Peripherals V.Fast/V.34 modems and a Hayes ESP
card for both of them, and I run PPP over them. Granted I run it
under NetBSD, but I don't think that should make a big difference. I
started out with a 16550 card, and just didn't like the fact that
characters were getting dropped, because that would put lags in the
Not to score points or anything, but just to note that FreeBSD *does*
make a difference. The sio driver won't drop your characters with a
16550. I know, I've done it many times.
I have a feeling that on *our* Zenith 386/25, which has to be the
slowest 386 ever manufactured, that even FreeBSD would occasionally
drop characters. ;-) This is one sluggard machine... I think the
"25" in 386/25 means they use 25 wait states per memory access...
Anyway, I've had fantastic results with the ESP cards, and highly
recommend them to anyone planning on using a high speed modem. Even
if you don't drop characters, you can still back the serial port off
to trigger on a higher character count, meaning the CPU will be kept
much less busy chasing interrupts down, than with a smaller serial
chip.
--
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Michael L. VanLoon michaelv@HeadCandy.com michaelv@iastate.edu
Free your mind and your machine -- NetBSD free un*x for PC/Mac/Amiga/etc.
Working NetBSD ports: 386+PC, Mac, Amiga, HP300, Sun3, Sun4c, PC532
In progress: DEC pmax (MIPS R2k/3k), VAX, Sun4m
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