Re: Micro code of i82557

On Wed, 17 Oct 2007, Zhang, Xing Z wrote:

> 	I am doing an eepro100 emulator for QEMU that is dynamic binary translation emulator. All my works based on a native 
> I82557 card. Now my emulator can work in linux but not windows.
> When I debugging into windows, I found the windows driver will
> execute a load microcode CU command, which patches microcode on card's RAM and changes its behavior. 
> 	After microcode loaded, the driver delivers some unknown 
> commands to CUC(not CB list) such as 0011. I guess it's related
> to microcode which is loaded before. 
> 	I google it, but found no doc for developing microcode patches. Could anyone kindly give me some hints(how can I get these docs)? Great thx.
> 

I don't think that Intel externally documents downloadable microcode, or 
what their modified microcode does.

You might try changing the PCI ID of the emulator to a different one 
supported by the driver, especially an one for older hardware.  This may 
change the driver behavior to not modify the microcode.

> BTW: I found the sample driver of WDK is based on eepro100 card,
> and it's fine to my emulator. Seems it also has many differences 
> with official driver.
> 
> Good good study,day day up ! ^_^
> -Wing(zhang xin)
> 
> OTC,Intel Corporation
> 
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-- 
Donald Becker				[email protected]
Penguin Computing / Scyld Software
www.penguincomputing.com		www.scyld.com
Annapolis MD and San Francisco CA