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From: michaelv@MindBender.HeadCandy.com (Michael L. VanLoon)
Newsgroups: comp.os.linux.development,comp.os.linux.misc,comp.os.386bsd.questions,comp.os.386bsd.misc,sci.electronics
Subject: Re: 16550 detection
Date: 01 Nov 1994 03:10:19 GMT
Organization: HeadCandy Associates... Sweets for the lobes.
Lines: 21
Message-ID: <MICHAELV.94Oct31211019@MindBender.HeadCandy.com>
References: <CMETZ.94Oct30051603@itchy.inner.net>
<SRA.94Oct30162124@rurha-pente.epilogue.com>
<CMETZ.94Oct30192816@itchy.inner.net> <CyIzxz.97A@cuug.ab.ca>
<TYTSO.94Oct31162517@dcl.mit.edu>
NNTP-Posting-Host: mindbender.headcandy.iastate.edu
In-reply-to: tytso@athena.mit.edu's message of 31 Oct 1994 21:25:11 GMT
In article <TYTSO.94Oct31162517@dcl.mit.edu> tytso@athena.mit.edu (Theodore Y. Ts'o) writes:
You make a lot of generalizations about 16550-like UARTs that aren't
the real thing and have 1024-byte pseudo buffers. I don't know what
you're talking about since I've never seen such a thing.
You do need to make the distinction, however, between these fake
16550's and something like the Hayes ESP card, which is an excellent
thing to have. Especially since you make claims about how you
wouldn't want the kernel to have that many queued up characters and
other nonsense. The Hayes ESP card emulates a 16550, but has
1024-byte FIFO's. It works extremely well, and was worth every dime I
payed for it on my NetBSD system.
--
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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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