Date: Fri, 25 Aug 1995 02:30:35 -0700 From: Poul-Henning Kamp <phk@critter.tfs.com> To: "Jordan K. Hubbard" <jkh@time.cdrom.com> Cc: Poul-Henning Kamp <phk@freefall.FreeBSD.org>, jgreco@brasil.moneng.mei.com (Joe Greco), terryl@CS.Stanford.EDU, freebsd-hackers@freebsd.org Subject: Re: ISDN Anyone? Message-ID: <574.809343035@critter.tfs.com> In-Reply-To: Your message of "Thu, 24 Aug 1995 19:26:44 PDT." <20546.809317604@time.cdrom.com>
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> > There is actually a lot more promise in a 16550 or 16650 at 460800 bps. > > You only get 1/16th or 1/32th the number of interrupts. > > Hmmm. I find that the serial interrupt overhead is pretty intense at 115.2 > even with a 16550. You know some secret for doing this I don't? Yes, make sure you have a 16550AN (I belive the 'A' is the important part). The fifo's didn't work on the first "16550" parts. -- Poul-Henning Kamp | phk@FreeBSD.ORG FreeBSD Core-team. http://www.freebsd.org/~phk | phk@login.dknet.dk Private mailbox. whois: [PHK] | phk@ref.tfs.com TRW Financial Systems, Inc. Just that: dried leaves in boiling water ?
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