Subject: Re: 64 bit DMA tags for PCI
To: Matt Thomas <>
From: John Nemeth <>
List: tech-kern
Date: 05/13/2003 13:46:53
On Oct 3,  1:26am, Matt Thomas wrote:
} At 01:12 AM 5/13/2003, John Nemeth wrote:
} >On Oct 1,  6:51pm, Matt Thomas wrote:
} >}
} >} I also want a #define that indicates the 64bit DMA is available so that
} >} if it isn't present, the code can be compiled out.  No need for 64bit
} >} DMA support on macppc or hpcmips for instance
} >
} >      The Apple Xserve has 64 bit PCI slots.
} Yes it does but it can only address up to 2GB of memory.

     And, this is what Apple is trying to pitch against Sun???  No
wonder they like to compare it against the V100.  Anyways, does this
affect 64 bit data at all, or just 64 bit addresses?

}-- End of excerpt from Matt Thomas