Date: Tue, 29 Jan 2002 09:42:19 -0500 From: Jason Andresen <jandrese@mitre.org> To: Dennis Dai <ddai55@yahoo.com> Cc: FreeBSD-Stable@freebsd.org Subject: Re: Multiple Promise controllers Message-ID: <3C56B4CB.5FD5E46C@mitre.org> References: <20020129001127.96035.qmail@web14704.mail.yahoo.com>
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Dennis Dai wrote: > > (Please cc me as I'm not on the list.) > > I used to plug 5 promise Ultra100 TX2 cards in one computer. All of > them were recognized. But when I plugged 12 drives into those cards, > only 8 drives were recognized correctly (or maybe I need to MAKEDEV?). > I remember reading somewhere (probably in one of the source code either > in FreeBSD or in Linux kernel) that promise has a upper limit of 12 > drives in one system but only the first 8 will be in DMA mode and the > last 4 in PIO with some treak (burst? can't remember). That's exactly the behavior I saw. They were in PIO4 mode IIRC, although FreeBSD detected them in UDMA100 mode, the first time I tried to access them they dropped back down to PIO4 (I think). The drives don't show up in the BIOS boot screen either. -- \ |_ _|__ __|_ \ __| Jason Andresen jandrese@mitre.org |\/ | | | / _| Network and Distributed Systems Engineer _| _|___| _| _|_\___| Office: 703-883-7755 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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