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Open Source and information security mailing list archives
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Date: Fri, 25 Aug 2006 11:17:42 -0400 From: "Stuart MacDonald" <stuartm@...necttech.com> To: "'linux-os \(Dick Johnson\)'" <linux-os@...logic.com>, "'Krzysztof Halasa'" <khc@...waw.pl> Cc: "'Alan Cox'" <alan@...rguk.ukuu.org.uk>, "'David Woodhouse'" <dwmw2@...radead.org>, <linux-serial@...r.kernel.org>, "'LKML'" <linux-kernel@...r.kernel.org> Subject: RE: Serial custom speed deprecated? From: On Behalf Of linux-os (Dick Johnson) > But the baud-rates have always been some approximation that starts > at 75 and increases by powers-of-two. This is because the hardware > always had fixed clocks with dividers that divided by powers-of-two. > What is the claim for the requirement of strange baud-rates set > as an integer of dimension "baud?" Where does this requirement > come from and what devices use these? Perhaps you'd like to check out our products http://www.connecttech.com/ We build a lot of custom boards that have odd clocks to generate very odd baud rates for random serial devices. The Bxxx style has been a thorn in my side since 1999. Also, Oxford's 16PCI95x family has three different points of altering the clock; the clock prescaler, the actual sample rate (which is the classic /16 that most are used to), and the actual divisor. That can produce pretty much any baud rate, albeit with some error. ..Stu - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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