Subject: Re: ISA Adaptec SCSI 1542CF problems on '486
To: Tom Trebisky <tom@kofa.as.arizona.edu>
From: Jason Thorpe <thorpej@nas.nasa.gov>
List: netbsd-help
Date: 10/03/1997 14:26:14
On Fri, 3 Oct 1997 09:44:48 -0700 (MST)
Tom Trebisky <tom@kofa.as.arizona.edu> wrote:
> Now I get lots of errors, including the following messages:
>
> aha0: DMA beyond end of ISA
> aha0: BAD CCB ADDR!
> aha0: timed out AGAIN!
> aha0: .... (and so on)
>
> Did I forget to mention that I have 64M of ram and I am running netBSD 1.1 ?
>
> The QUESTION is:
>
> Does NetBSD 1.2 or beyond have a fix for the 16M isa limit of this kind
> of hardware?? Thanks to anyone with info willing to take the time to help!
Yes, I implemented generic bounce buffers as part of my bus_dma framework,
which is in NetBSD-current. I would heartily encourage you to pick up
the latest i386 binary snapshot, and give it a whirl.
Jason R. Thorpe thorpej@nas.nasa.gov
NASA Ames Research Center Home: +1 408 866 1912
NAS: M/S 258-6 Work: +1 415 604 0935
Moffett Field, CA 94035 Pager: +1 415 428 6939