Date: Thu, 16 Apr 1998 09:45:20 -0700 (PDT) From: Brian Beattie <beattie@aracnet.com> To: Tom <tom@uniserve.com> Cc: Kerry Morse <kerry.morse@metro.tas.com.au>, "'freebsd-current@FreeBSD.ORG'" <freebsd-current@FreeBSD.ORG> Subject: Re: Help - please... Adaptec 1542 and Exabyte tape problem... Message-ID: <Pine.LNX.3.96.980416094305.4146A-100000@shell2.aracnet.com> In-Reply-To: <Pine.BSF.3.96.980415225257.15072A-100000@shell.uniserve.com>
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On Wed, 15 Apr 1998, Tom wrote: > > On Thu, 16 Apr 1998, Kerry Morse wrote: > > > Apr 16 13:35:05 proxy /kernel: aha0: DMA beyond end Of ISA: 0x357cd10 > > Bounce buffers are required to DMA above the 16MB for ISA devices. > However, bounce buffers do not work for the aha driver (it is unclear > whether the driver or the bounce buffers are broken). > > This is any old problem. See the archives. It seems that any developer > who has more than 16MB of RAM has also decided to upgrade to non-ISA > controllers. > I am planning to implement the aha1542 controller under the new CAM interface. I have more than 16MB and plan to ensure bounce buffers work. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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