testbios and the system timer
Li-Ta Lo
ollie at lanl.gov
Thu Jun 3 09:47:00 CEST 2004
On Thu, 2004-06-03 at 02:56, Richard Smith wrote:
>
> What i've noticed that the emulator causes the Vbios to get stuck in
> some delay loops. Eventually it probally would exit but its currently
> making my logs huge and causing the knashing of much teeth.
>
> So I'm thinking that the emulator needs to intercept reads and writes to
> the system timer and provide a fake timer that increments 1 tick per
> some x instructions emulated. And hopfully the chips and the bioses
> that need this won't mind that the actuall delay is longer than what was
> requested.
>
The original emulator in xfree86 use the system's gettimeofdate to
emulate the timer. Since we are not going to have that function in
linuxbios, I removed it.
Probably we need an other way to emulate the timer.
Ollie
> Any comments before I hack this in?
>
> I'm off to bed.
>
>
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