Date: Thu, 14 Aug 2003 21:48:08 +0100 From: Bruce M Simpson <bms@spc.org> To: Petri Helenius <pete@he.iki.fi> Cc: freebsd-current@freebsd.org Subject: Re: pci configuration Message-ID: <20030814204808.GC1417@spc.org> In-Reply-To: <056001c361aa$55841540$812a40c1@PETEX31> References: <02b701c360de$ed311950$812a40c1@PETEX31> <20030812161353.F85404@carver.gumbysoft.com> <3F399A8A.8070605@freebsd.org> <03d101c3616a$982476a0$812a40c1@PETEX31> <3F3A48B5.9010401@freebsd.org> <056001c361aa$55841540$812a40c1@PETEX31>
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On Wed, Aug 13, 2003 at 05:51:09PM +0300, Petri Helenius wrote: > > True, those parameters are available, but the original question was > > about reporting the bus width and frequency, which are not available. > How can these parameters be displayed? Generally I measure PCI bus frequency by attaching a poor man's 'bus analyzer'. There are low end ones available. The one I use is called the 'PC Geiger'. This has a CPLD capable of decoding the PCI logic and a small PIC to control the display and which reads some of the CPLD registers. I'm not aware of any chipsets which expose information about the PCI bus clock / bus width in use. A long trawl through datasheets may be in order. BMS
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