Date: Wed, 12 May 1999 10:40:33 +1000 From: Peter Jeremy <peter.jeremy@auss2.alcatel.com.au> To: hackers@FreeBSD.ORG Subject: Re: What is a "transmit underflow"? Message-ID: <99May12.102553est.40323@border.alcanet.com.au>
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Matthew Jacob <mjacob@feral.com> wrote: >This almost always happens for tulip chips && and alpha platforms and Matt >Thomas' de driver. ... >> > :de0: abnormal interrupt: transmit underflow (raising TX threshold to 96|256) >> > :de1: abnormal interrupt: transmit underflow (raising TX threshold to 96|256) It also occurs under Digital UNIX: vmunix: tu0: transmit FIFO underflow: threshold raised to: 512 bytes vmunix: tu1: transmit FIFO underflow: threshold raised to: 512 bytes I suspect it's poor design of either the cards or bus. (I've previously queried DEC on why some SCSI cards were placed in particular locations, and received the following answer: "We place the SCSI cards as tested. We know that some cards don't work as well in all slots so we supply the tested version.") Peter To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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