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Date: Thu, 12 Feb 1998 22:45:46 -0600 (CST) From: "Daniel M. Eischen" <deischen@iworks.InterWorks.org> To: U.Soni@cs.ucl.ac.uk, linux-scsi@vger.rutgers.edu > Ok. let me try and explain my predicament more clearly. > > I have an onboard AIC7880, with the following devices configured; > > -------- -------- -------- -------- > -- | |-------| |-------| |-- | | > T | | high | | | | T | | > -- | |-------| |-------| |-- | | > | | | | | | | | > | | | | | | | | > -- | |-------| |-------| AIC |--------| |-- > T | hd1 | low | hd2 | | 7880 | low |cdrom | T > -- | wide |-------| wide |-------| |--------|narrow|-- > -------- -------- -------- -------- > > T = Termination. > > Clearly, I need to configure the AIC7880 with Low-byte(off) and > High-byte(on) Right. > My SCSISelect doesn't appear to give me the option of auto-detect. > The only setting in SCSISelect for termination refers to the Low-byte. > The High-byte is turned on/off via a motherboard jumper. And no BIOS upgrade will change anything either I suppose :-( > The problem with the linux aic7xxx driver is that regardless of what I > do with the motherboard (high-byte) jumper, the driver tells me that > high-byte termination is set to exactly the same state as the low-byte > termination. > > So, the only settings that I can arrive at are; > Low-byte(on), High-byte(on) Both on. > > or, Low-byte(off), High-byte(off). Both off. Unlesss a BIOS upgrade will let you use auto-termination or give you access to high byte termination, there is nothing you can do other than hardcode the driver to force the proper termination setting. This sux :-( Probably another config option is in order here (another unhappy face :( ). Dan Eischen deischen@iworks.InterWorks.org
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