Date: Tue, 28 Jul 1998 21:49:57 +0200 From: Stefan Eggers <seggers@semyam.dinoco.de> To: heller@cdnow.com Cc: freebsd-stable@FreeBSD.ORG, seggers@semyam.dinoco.de Subject: Re: Support for V.90 PCI modems? Message-ID: <199807281949.VAA03410@semyam.dinoco.de> In-Reply-To: Your message of "Tue, 28 Jul 1998 14:25:37 EDT." <199807281825.OAA16891@daria.cdnow.com>
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> Do I dare ask how external V.90 modems work then? They are just normal modems. I know as I have one. ;-) Gives me about 2/3 of the German ISDN speed of 64000 bps - it reaches 44000 bps - which makes the WWW real fun and CVSUp more enjoyable and cheaper. The one in question is a PCI card from what I read and for such cards one can make the hardware cheaper by putting part of the processing into a special driver which makes it appear like a normal COM port modem to the system and is just noticeable by reducing the available main CPU power a bit when in use. W/o such a driver (under FreeBSD for example) one can't use it then. As far as I understand the problem with this is that one can't write a driver w/o documentation (I guess no one will doubt this :->) and it seems for such devices the only documentation for the hardware is the binary version of the Windows driver. One would first have to reverse engineer the Windows driver. :-( Of course one might envision a hybrid version where one does this trick over a serial port but I hope no manufac- turer makes such an insane device as then the serial port has to be faster I think and then it might fail with not so good cabling which just works with normal modems for example but can't stand higher speed. Stefan. -- Stefan Eggers Lu4 yao2 zhi1 ma3 li4, Max-Slevogt-Str. 1 ri4 jiu3 jian4 ren2 xin1. 51109 Koeln Federal Republic of Germany To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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