Date: Wed, 25 Sep 1996 13:07:58 -0700 (PDT) From: Gary Kline <kline@tera.com> To: ejs@bfd.com (Eric J. Schwertfeger) Cc: nadav@barcode.co.il, dwhite@resnet.uoregon.edu, lmcsato@lmc.ericsson.se, freebsd-questions@FreeBSD.org Subject: Re: support for 16650 Message-ID: <199609252008.NAA25242@tera.com> In-Reply-To: <Pine.BSF.3.95.960925090541.18309B-100000@harlie> from "Eric J. Schwertfeger" at "Sep 25, 96 09:10:16 am"
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According to Eric J. Schwertfeger:
>
>
> > I guess not. Found this in sio.c:
> > static struct speedtab comspeedtab[] = {
>
> > 57600, COMBRD(57600),
> > 115200, COMBRD(115200),
> > -1, -1
>
> >From what I understand, what the 16650 does is just allow a clock rate of
> 4 times that which a 16550 will handle, so if you tell it to use 57600,
> you'll really get 230Kbaud. Note this would be set using jumpers on
> the IO card, not any software setting. The only way the programming
> interface is different is the deeper FIFO. Should be a trivial
> modification to anyone that understands the sio driver and has the chip
> references.
>
>
Maybe this change can be dropped into a -current version,
yes? I have heard rumblings--at least 3rd- or 4th-hand--
that within a year the POTS modems will be screaming along
at 57Kbps or something. Anybody else hear these rumors?
gary kline
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