On Fri, Jun 26, 2020 at 09:06:58PM +0300, Roman Bolshakov wrote:
> There's a fallback to PIT if TSC is not present but it doesn't work
> properly. It prevents boot from floppy on isapc and 486 cpu [1][2].
>
> SeaBIOS configures PIT in Mode 2. PIT counter is decremented in the mode
> but
There's a fallback to PIT if TSC is not present but it doesn't work
properly. It prevents boot from floppy on isapc and 486 cpu [1][2].
SeaBIOS configures PIT in Mode 2. PIT counter is decremented in the mode
but timer_adjust_bits() thinks that the counter overflows and increases
32-bit tick
On Fri, Jun 26, 2020 at 04:09:57PM +0300, Roman Bolshakov wrote:
> On Tue, Jun 23, 2020 at 11:00:24PM -0400, Kevin O'Connor wrote:
> > Good catch. Could we fix it using the patch below instead though?
> >
> > -Kevin
> >
> >
> > --- a/src/hw/timer.c
> > +++ b/src/hw/timer.c
> > @@ -180,7 +180,7
On Tue, Jun 23, 2020 at 11:00:24PM -0400, Kevin O'Connor wrote:
> On Sat, Jun 13, 2020 at 02:19:12PM +0300, Roman Bolshakov wrote:
> > There's a fallback to PIT if TSC is not present but it doesn't work
> > properly. It prevents boot from floppy on isapc and 486 cpu [1][2].
> >
> > SeaBIOS
