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From:	"Josep M." <josepmaria AT turomas DOT com>
To:	<djgpp AT delorie DOT com>
Subject:	RE: jitter between 2 hardware interrupt
Date:	Thu, 4 Mar 2010 20:07:17 +0100
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I don't know why, but there are som bios task wich interrupts processor =
and
I can not disable too.


Try this code at the begining of your code:




	temporal=3Dllegeix_registre_pci(0x44,0,31,0,1);
	//temporal=3Dtemporal&(~0x10);
    temporal=3Dtemporal&(0x00);
	escriu_registre_pci(0x44,0,31,0,temporal,1);     //ACPI

	temporal=3Dllegeix_registre_pci(0x5c,0,31,0,1);
	//temporal=3Dtemporal&(~0x10);
    temporal=3Dtemporal&(0x00);
	escriu_registre_pci(0x5c,0,31,0,temporal,1);     //GPIO




unsigned long llegeix_registre_pci(int reg,int func,int dev,int bus,int
n_bytes)
{
int reg2;
long unsigned data=3D0;

reg2=3D(reg%4)*8;

adress_data_852(reg,func,dev,bus,n_bytes);

data=3Dinportl(0xcfc);
data=3Ddata>>reg2;

if(n_bytes=3D=3D4)return data;
if(n_bytes=3D=3D2)return data&0xffff;
if(n_bytes=3D=3D1)return data&0xff;
}

unsigned long escriu_registre_pci(int reg,int func,int dev,int =
bus,unsigned
long val,int n_bytes)
{
int reg2;
long unsigned data,mask;

reg2=3D(reg%4)*8;

adress_data_852(reg,func,dev,bus,n_bytes);

data=3Dinportl(0xcfc);

if(n_bytes=3D=3D4)mask=3D0xffffffff;
if(n_bytes=3D=3D2)mask=3D0xffff;
if(n_bytes=3D=3D1)mask=3D0xff;
mask=3Dmask<<reg2;
mask=3D~mask;
val=3Dval<<reg2;

data=3Ddata&mask;
data=3Ddata&val;

outportl(0xcfc,val);
}

-----Mensaje original-----
De: philippe [mailto:philippe DOT meynard AT vendeeconcept DOT com]=20
Enviado el: dijous, 4 / mar=E7 / 2010 18:42
Para: djgpp AT delorie DOT com
Asunto: Re: jitter between 2 hardware interrupt

On Mar 4, 4:07=A0pm, "Josep M." <josepma DOT  DOT  DOT  AT turomas DOT com> wrote:
> I have the same problem, it is caused by bios processes. I could solve
this
> trouble doing that:
>
> 1. I had to disable USB in bios.
>
> 2. Disable HDD IDE block mode.
>
> 3. In some cards the problem persist, in this case you have to put =
some
code
> to reprogram chipset.
>
> Test if you can solve your problem with 2 first points
>
> -----Mensaje original-----
> De: philippe [mailto:philippe DOT meyn DOT  DOT  DOT  AT vendeeconcept DOT com]
> Enviado el: dimecres, 3 / mar=E7 / 2010 11:26
> Para: dj DOT  DOT  DOT  AT delorie DOT com
> Asunto: jitter between 2 hardware interrupt
>

it's better , Now I have 618us to 1334us fluctuation. But I don't
understand : I have all disabled hardware and software interrupt
except int 08, how BIOS can be priority of my program ? What I forget
disable?


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