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From: ron@rdk386.uucp (Ron Kuris)
Newsgroups: comp.unix.sysv386
Subject: Re: FAS 2.08 async driver, part 1/4
Message-ID: <1991Feb12..4822@rdk386.uucp>
Date: 13 Feb 91 06:54:56 GMT
References: <60TNCCE@geminix.in-berlin.de> <1991Feb5.165551.549@robobar.co.uk> <311@n4hgf.Mt-Park.GA.US>
Reply-To: ron@rdk386.UUCP (Ron Kuris)
Organization: At Home, Sacramento, CA
Lines: 28

In article <311@n4hgf.Mt-Park.GA.US> wht@n4hgf.Mt-Park.GA.US (Warren Tucker) writes:
>In article <1991Feb5.165551.549@robobar.co.uk> ronald@robobar.co.uk (Ronald S H Khoo) writes:
>>gemini@geminix.in-berlin.de (Uwe Doering) writes:
>>
>>> X     um82450 and i82510. 8250 chips are not supported due to various
>>What kind of "not supported" status does the 8250 have ?  Will it still
>>work at low speeds, such as 1200/2400 or will FAS simply refuse to work ?
>
>8250s are not able to perform in an interrupt environments.
>8250As are, but are still slow. 10 MHz and faster machines and
>    ^
>certainly ANY 16-bit fetcher (80x86) will suffer some or totally
>                                  ^
>with 8250As.

How about the 8250N-B's?  Are these chips any good?

I have a Bell-Technologies HUB-6 card and got it running at 19.2k
without any problems on my reasonably-performing 386 (although its
only at 20mhz).  The cips are marked INS8250N-B, and the docs
say they are "high performance 8250 chips"... Also, this card appears
to be supported in the driver.  Are there newer models with 16550A's
on them?
-- 
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