On Thu, 17 Mar 2005, zhougoal wrote:

> Hello Alan,
> 
>       Sorry to trouble you again!
> 
>       I met a question again. When I send a control message with my
> isp1561 to the high speed device,the host controller will trigger a
> interrupt with the status valued : 0xa018, which means a host system
> error . I read the EHCI spec and found it is because some PCI error.But
> I read the pci_command register ,it is ok with the busmaster and memory
> space is set to one!
> 
>    So what is the error to trigger this host system error interrupt. Is
> it possible that the qh and qtd structure is not in correct format?

No, that won't cause a PCI error.  The error could arise if you forgot to 
enable the controller as a bus master.

>     In addition,the source forger don't receive the mails from my
> 163.com's mail.Does it have some limition? Just now I registered on
> OSTG,does it help?

I don't know.

Alan Stern



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