Subject: Re: Allocating a buffer in physical memory?
To: None <tech-kern@netbsd.org>
From: Frank van der Linden <fvdl@wasabisystems.com>
List: tech-kern
Date: 09/24/2001 20:35:12
On Mon, Sep 24, 2001 at 04:21:08PM +0200, Frank van der Linden wrote:
> Normally allocating memory in explicit ranges of memory only needs to
> be done when allocatng driver memory for DMA purposes. We use the
> bus_dma(9) interface for that. A bus_dma tag describing the ISA
> bus will actually allocate physical memory below 1M, since that
> is the limit of addressable memory over the ISA bus.
Err, ISA deals with < 16M of course.. as was I was kindly reminded of.
- Frank