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.


> Any comments before I hack this in?
> I'm off to bed.

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