Re: [Wirelessdriver-devel] I might add PRISM 2.5 support - a few questions

[Rob M. <ro...@ma...>]

On 16-Nov-03, at 8:34 AM, Java Nut wrote:

> I downloaded the latest source code using CVS as described in the FAQ  
> and I might have some time to take a stab at PRISM 2.5 support. First  
> I have a few questions that would help me get started:
>
> 1) Have any of the other developers found the PRISM 2.0 and PRISM 2.5  
> programmer's manuals by Intersil? Can you share them with me or make  
> them available on the sourceforge site for the project?

AN9900 and RM025 are available under NDA from Intersil.  sorry, I can't  
share them without breaking that agreement.

>
> 2) Has anyone looked at how different or similar PRISM 2.5 is to PRISM  
> 2.0?

PRISM 2, 2.5 and 3 are all very similar.  The biggest differences are  
in form factor and integration.  I believe that RPSIM 2 was very  
similar silicon to Lucent's Hermes chipset and that PRISM 2.5  
introduced USB as an interface type.

>
> 3) I am curious, where in the code is the xml file read and the card  
> type checked? And how does the program distinguish what PRISM level a  
> card has?

That is done by IOKit automatically.  For information on how this  
works, see  
<http://developer.apple.com/documentation/DeviceDrivers/Conceptual/ 
IOKitFundamentals/index.html>

>
> 4) Where are the messages written by IOLOG written? and are they  
> written when the project is compiled with the release project setting?

IOLog() written messages are written to the system console.  The  
location of this varies from system release to system release but is  
easily accessed by the Console app.  Some of them are written when  
compiled as a release build, but these are generally restricted to  
error messages.

>
> 5) Are there any notes about the overall structure and organization of  
> the program to help me understand the program quickly?

Not yet.  Much of the existing code base was pulled from NetBSD.  I do  
have a new code base that will be released as soon as I can sort out  
one last bug that hangs certain card firmware.  I'm hoping this is in  
the next day or two.

>
> Thanks in advance for any assistance.
>

-Rob McKeever
ro...@ma...