Date: Thu, 28 Oct 1999 22:21:15 +0200 (MET DST) From: Gerard Roudier <groudier@club-internet.fr> To: "Kenneth D. Merry" <ken@kdm.org> Cc: BOISSEAU Jean-Philippe <jean-philipe.boisseau@sextant.thomson-csf.com>, freebsd-hardware@FreeBSD.ORG, nsouch@FreeBSD.ORG, freebsd-scsi@FreeBSD.ORG Subject: Re: Tekram DC 395 Message-ID: <Pine.LNX.3.95.991028221121.372B-100000@localhost> In-Reply-To: <199910280226.UAA12960@panzer.kdm.org>
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You must be aware of the following when deciding to buy such a controller: The S1040 has no phase engine, unlike the aic7xxx and the sym53c8xx chips, for example. The means that all phase changes must be handled by the C code. Result is at least 5 (more?) interrupts + some (much?) programmed IOs from the C code for the execution of a each SCSI IO (the chip does DMA for the data).= =20 Basically the design of this chip is similar to the amd53c974. I suggest people to prefer the Tekram Boards based on SYM53C8XX chips that are excellent products for a quite reasonnable price. (DC-390-U/F/U2B/U2W etc ...) G=E9rard. On Wed, 27 Oct 1999, Kenneth D. Merry wrote: > [ CCed to -scsi, as people there might be interested ] >=20 > BOISSEAU Jean-Philippe wrote... > > Hi. > > I'd like to know if there is a work in progress for Tekram DC 395 SCSI > > card. >=20 > Actually, Tekram has written a driver for the card. I don't know much > about the card or driver, but the driver is available at ftp.tekram.com. >=20 > I have a slightly newer version (1.06, the version on the ftp site is 1.0= 5) > that Erich Chen sent me in early September, but I haven't had a chance to > do much with it. >=20 > In any case, I'd suggest that you first contact Erich Chen > <erich@tekram.com.tw>, as he is likely to have the latest version of thei= r > driver for the TRM-S1040 chip that's on their 395 and 315 boards. If tha= t > fails, I can just give you a copy of the driver he sent me. >=20 > Tekram is to be commended for putting forth the effort to support FreeBSD= =2E > They have actually written three different FreeBSD/CAM drivers -- one for > their AMD 53c974 boards (the amd driver in the tree is based on that > driver), one for their NCR/Symbios boards, and now one for their own SCSI > chips. >=20 > Ken > --=20 > Kenneth Merry > ken@kdm.org >=20 >=20 > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-scsi" in the body of the message >=20 >=20 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message
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