Re: [pci] How to start PCI BURST Transaction ?

[Sebastian Fernandez <sebfer@iie.edu.uy>]

If you are using LINUX, you can use:

MTRR: echo "base=0xd9000000 size=0x400000 type=write-back">/proc/mtrr

To see MTRR status: cat /proc/mtrr

Source: http://www.pcisig.com/reflector/msg04112.html


Seba
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Sebastián Fernández
FAc. de Ingenieria - UDELAR
tel: 7110974 int.107 (IIE)

On Fri, 24 May 2002 gustaw47@poczta.onet.pl wrote:

> Hi All
>
> I am developping a PCI-CARD. I need to read lots of data from it with
> burst.
> The problem is, when I execute instruction on my PC:
>
> mov cx,8
> rep movsd
>
> - pci bridge reads not in burst mode, but word by word: reads one word,
> waits 450 ns, and reads next word and so on. This is definitely to slow !
>
> How can I make it faster ?
> What should I write to which PCI bridge PORT on motherboard, to enable
> Burst transaction ?
>
> With regards,
> Gustaw
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