Subject: Re: DMA ISA
To: Robert Niles <rniles@selah.net>
From: David Brownlee <david@mono.org>
List: port-i386
Date: 09/05/1996 17:55:59
> 24MB RAM
> Tried: 1542 controller for SCSI HD
Bingo - thats the problem.
isa DMA is limited to the first 16Mb, so the 154x controller
wont work in stock netbsd when you put more than 16mb in...
Solutions - any of:
a) Pull 8Mb out to take you down to 16Mb
b) Do a, then pull down Juergen Hannken-Illjes's bounce buffer
patch to get NetBSD to work with 154x & >16Mb.
(ftp://bseis.eis.cs.tu-bs.de/pub/hannken/. Applies to
1.2BETA or various earlier releases & runs fine.
c) Run OpenBSD, FreeBSD or some other system which supports
bounce buffers.
David/abs (david@mono.org)
.---- I've been too drunk to love ----.--- I've been too drunk to remember -.
| Too drunk to care | The hell of the night before |
| Looked like death, felt like Hell | I've been drinking myself blind |
`------ Been the worse for wear ------'--- And still I'll drink some more --'
On Thu, 5 Sep 1996, Robert Niles wrote:
> Last night my HD went down so I tried to configure a SCSI 2GB HD
> for use with NetBSD. When creating a new file system for the drive
> I received errors to the effect that DMA was too large for ISA.
> I couldn't get around that problem. Next I tried to bring up
> two IDE HDs It would recognize the first, but not the second. I have
> no idea why, because both drives are definately good.
>
> I have:
>
> Pentium 66
> 24MB RAM
> Tried: 1542 controller for SCSI HD
>
> Robert
>