Date: Thu, 30 Apr 1998 06:40:48 +0200 (CEST) From: Andre Albsmeier <andre.albsmeier@mchp.siemens.de> To: gibbs@narnia.plutotech.com (Justin T. Gibbs) Cc: andre.albsmeier@mchp.siemens.de, scsi@FreeBSD.ORG Subject: Re: I ment the AIC7895 and not the AIC7985 :-) Message-ID: <199804300440.GAA06386@internal> In-Reply-To: <199804291848.MAA27221@narnia.plutotech.com> from "Justin T. Gibbs" at "Apr 29, 98 12:48:48 pm"
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> In article <199804291638.SAA19643@internal> you wrote: > >> > >> I would like to know how different is the AIC7895 chip > >> compared to the AIC7880 apart from supporting two SCSI > >> channels. I know it is supported in CAM and maybe the CAM > >> developers can tell me if it is more or less two 7880's > >> in one chip. > > The 7895 has two, completely independent, SCSI sequencers and > risc processors, each with two DMA FIFOs, dumping into a single > PCI bus module. These two "cores" provide similar functionality > to independent aic7880s, but the register set is somewhat different > and it would be non-trivial to add support for the aic7895 to the > older driver. The main difference is the way commands must > be queued to the chip, but there are other, performance related, > features that should also be supported. I see. I think that's too much for me. If it had been only some initialization stuff, some probing,... I would have given it a try. Thanks anyway, -Andre To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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