Date: Sat, 13 Sep 1997 13:05:46 +0200 From: Stefan Esser <se@FreeBSD.ORG> To: jgrosch@superior.mooseriver.com Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: NCR 53c710 Message-ID: <19970913130546.21647@mi.uni-koeln.de> In-Reply-To: <19970912174203.24817@mooseriver.com>; from Josef Grosch on Fri, Sep 12, 1997 at 05:42:03PM -0700 References: <19970912174203.24817@mooseriver.com>
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On Sep 12, Josef Grosch <jgrosch@superior.mooseriver.com> wrote: > I have recently been give an HP EISA SCSI card. This card does fast-wide > differential. My main chip on this is a NCR 53c710. Can anyone point me to > the specs for this? I can't seem to find the specs on NCR's web page. No, the 53c710 isn't fast *wide* differential, for sure ... That would be the 53c720 ... The 53c7xx series is very similar to the 53c8xx, except for the generic bus interface on the 7xx versus the special PCI interface of the 8xx series. I seem to remember, that the 710 already offered the INTFLY instruction and other commands, that are required to have the SCSI chip autonomously operate on a request queue, as all 8xx chips can. The 53c700 was the last chip that lacked that feature, AFAIK. You could try building a driver for the 53c710/720 (and the new Ultra SCSI chips of the 7xx family) by modifying the NCR PCI SCSI driver. Most of the changes should be confined to the init code ... Some Information about the 710 should be available from the FTP server maintained by Symbios (FTP.Symbios.Com). I had good luck asking for manuals by sending mail to the address mentioned on the Symbios web pages. Regards, STefan
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