geekos-devel

[Geekos-devel] double characters

[Ahmad R. <ahm...@ho...>]

Hi David,

I was doing Project 0, the echoing of pressed keys. I used a =
Wait_For_Key() and Put_Char() combination to echo pressed keys, but I =
found that the keys are echoed twice. Is it due to a Bochs problem or a =
GeekOS problem? I investigated a little bit and found that for each key =
pressed, two keycodes are enqueued. Please shed some light on this =
problem!=20

Thanks,
Ahmad

Re: [Geekos-devel] double characters

[David H. <da...@cs...>]

Ahmad Rizvi wrote:

> I was doing Project 0, the echoing of pressed keys. I used a 
> Wait_For_Key() and Put_Char() combination to echo pressed keys, but I 
> found that the keys are echoed twice. Is it due to a Bochs problem or 
> a GeekOS problem? I investigated a little bit and found that for each 
> key pressed, two keycodes are enqueued. Please shed some light on this 
> problem!
>  

Events are generated for both key presses and key releases.
Check for KEY_RELEASE_FLAG in the returned keycodes.

-Dave