Re: Re: [pci] question on PCI master

[wilton@mail.usa.com]

Hi dingding,

I think Sumnow is right. There should be some registers in the PCI 
master that store the destination adress which is initialized by the 
system/device driver. 
The comparation of the address inPCI target is quite simple. It's pure 
combination logic. you may just compare the destination address with 
the base address register in PCI configuration space (only the 
implemented bits are needed to be compared). If they are equal, u get a 
hit.

Best regards

Wilton

----- Original Message ----- 
From: bailunchuan <bailunchuan@1... > 
To: "pci@o... " <pci@o... > 
Date: Mon, 1 Apr 2002 14:55:56 +0800 
Subject: Re: Re: [pci] question on PCI master 

> 
> 
> Hi,wilton 
> 
> I am doing similar project: a DAQ module board based on PCI bus. 
> have you got the idea on how to obtain the adress? Because the 
> master should first drive destination/target address on the bus, 
> then the target compare the address with itself to see if they 
> match, to decide whether accept the transaction from the master by 
> providing or receiving data. Another,what's the comparation of 
> address in the target? 
> 
> thanks a lot. 
> 
> dingding 
> 
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