Date: Sun, 19 Sep 1999 11:37:02 -0700 (PDT) From: William Woods <wwoods@cybcon.com> To: Kent Stewart <kstewart@3-cities.com> Cc: freebsd-questions@FreeBSD.ORG, freebsd-alpha@FreeBSD.ORG Subject: Re: Silo Overflows on Alpha...... Message-ID: <XFMail.990919113702.wwoods@cybcon.com> In-Reply-To: <37E50FD6.C0159835@3-cities.com>
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Just to follow up a bit on this.... dmesg says that the port is a : sio0 at port 0x3f8-0x3ff irq4 on isa0 sio0: type 16550A does this mean I am basically screwed? On 19-Sep-99 Kent Stewart wrote: > I don't have an Alpha but on a PC this isn't a usually an OS problem. > It is most often a uart problem. It happens when you have an external > moden connected to a com port running to 16450 or less uart. If you > have a 16550Afn or modern equivalent, then you have to up the fifo > count where the interrupts occur to 14. The internal modems have the > equivalent of a 16550 built in and don't have the problem for that > reason. Somewhere above 9600, the interupt latency is such that the > system can't respond and you get an overflow. My PC has the equivalent > of a 16550 built onto the motherboard and the connection to the > external modem is at 115,200 baud. This will handle a 56kb modem. You > are supposed to have the DTE rate set to 4 times the DCE rate but > 115,200 is as high as it goes on my computers. > > Kent > > William Woods wrote: >> >> I have an Alphastation 200 4/233 running 3.2-R (I am TRYING to cvsup to >> 3.3-Stable) and I keep getting silo overflows when connected to the net with >> an >> external modem at anything over 9600. >> >> The exact messages are: >> >> Sep 17 22:10:30 alpha /kerne;: sio0: 1 more silo overflow (total 300) >> 17 22:10:45 alpha /kerne;: sio0: 1 more silo overflow (total 301) >> 17 22:11:15 alpha /kerne;: sio0: 1 more silo overflow (total 302) >> 17 22:11:30 alpha /kerne;: sio0: 1 more silo overflow (total 303) >> 17 22:11:45 alpha /kerne;: sio0: 1 more silo overflow (total 304) >> 17 22:12:00 alpha /kerne;: sio0: 1 more silo overflow (total 305) >> 17 22:12:15 alpha /kerne;: sio0: 1 more silo overflow (total 306) >> 17 22:10:30 alpha /kerne;: sio0: 1 more silo overflow (total 307) >> 17 22:10:30 alpha /kerne;: sio0: 1 more silo overflow (total 308) >> >> etc......... >> >> I know I had this problem about 5 months ago, then I dident use the Alpha >> for a >> while. Now I am HOPEING that this is somewhat fixed in 3.3 (If I can ever >> cvsup >> the sources, I will find out). >> >> Can anyone shed some light on this... >> >> ---------------------------------- >> E-Mail: William Woods <wwoods@cybcon.com> >> Date: 18-Sep-99 >> Time: 22:37:32 >> This message was sent by XFMail >> --- >> >> To Unsubscribe: send mail to majordomo@FreeBSD.org >> with "unsubscribe freebsd-questions" in the body of the message > > -- > Kent Stewart > Richland, WA > > mailto:kstewart@3-cities.com > http://www.3-cities.com/~kstewart/index.html > > SETI (Search for Extraterrestrial Intelligence) @ Home > http://setiathome.ssl.berkeley.edu/ ---------------------------------- E-Mail: William Woods <wwoods@cybcon.com> Date: 19-Sep-99 Time: 11:35:17 This message was sent by XFMail ---------------------------------- -----BEGIN GEEK CODE BLOCK----- Version: 3.1 GIT d++ s+:+ a C+++ UB+++ P+ L++ E- W++ N+ o+ K- w O- M-- V PS-- PE++ Y+ PGP t+ 5+ X R- tv- b++ DI+ D G e++ h---- r+++ y++++ ------END GEEK CODE BLOCK------ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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