Date: Wed, 13 Dec 2000 13:26:10 -0500 (EST) From: Mobile Computer <mobile@vta.com> To: freebsd-mobile@freebsd.org Subject: Re: PCMCIA 16550A (USB .. Hmmm. ) Message-ID: <200012131826.NAA21106@mailhub.vta.com>
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Wed Dec 13 13:21:46 EST 2000 >Message-Id: <200012122029.NAA32295@harmony.village.org> >In-Reply-To: <200012122258.RAA18004@mailhub.vta.com> >Date: Wed, 13 Dec 2000 11:16:09 +1030 (CST) > >On 12-Dec-00 Mobile Computer wrote: >> FYI, the simple goal is to create a passive serial line monitor > >Another possibility is a USB serial dongle.. You'd need a laptop with USB > and have to be running 4.x though. > Hmm, the USB solution might be worth considering ....... another (previously unmentioned) aspect of this torturous exercise is that, once I confirm that I have a usable PCMCIA serial card, I change the UART crystal to a frequency that allows me to fool the card into running at a specific much higher speed. ( The Big Metal Thing They Pay Me To Fix runs at this higher speed. ) I have proven the concept already with some ( certainly un-committable ) ghastly multiplier mangling in sioreg.h and sio.c at various times, with an ISA multiport serial card.. Now if I could get it all into less space ... Certainly the USB devices I have just looked at are easily capable of the speed range I need ( 614.4K ) but unless this reference page is out of date /* project status of the FreeBSD USB project */ http://www.etla.net/~n_hibma/usb support for the kind of devices I would need (multiport serial adapters , serial dongles) is not quite there yet? ( Judging by the folks working on it, it will be bullet-proof when it's done, I'm willing to wait..) Until then, I better stick close to the sio driver, I like familiar stuff when I know I'm likely to unravel something. :) Excellent suggestion for a long term plan though, Thanks. Guy Boyd reply to: mobile@vta.com ___________________________________________ VTA Inc. / VTA Technologies Atlanta, Georgia PAO since 2.2.7 FreeBSD since 4.4BSD-Lite Release ___________________________________________ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message
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