> On Oct 13, 2015, at 2:28 AM, Carl Miller <cmiller...@hotmail.com> wrote:
> 
> 
> hello, was wondering if anyone might know how apple macbook's efi can detect 
> the option key. as i understand it apples' efi does not support the 
> Simple_Text_Input_EX_Protocol, just the earlier Simple Text Input Protocol 
> (not extended) and therefore can't detect the shift states and toggle states 
> of the key input.
>  (hence not detect ALT, CTRL etc, or OPTION.)
> 
> so how does apple detect if OPTION is pressed to know to bring up Startup 
> Manager?

Extra non-standard protocol.

Thanks,

Andrew Fish

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