BIOS interrupts

BIOS interrupts

[Wilson Fletcher]

Can someone point me to some references re: how to call BIOS interrupts 
in Linux ?

I don't want 1000 messages telling me it can't be done. I know that 
Linux doesn't support the bios interrupts as it stands.

Specifically 15h on a Toshiba laptop ( if your interested :-) )

Thanks,

Wilson Fletcher

Re: BIOS interrupts

[Jani Monoses]

Look at how XFree86 calls int10.I think sys_vm86 (or something named like
that)

On Thu, 18 Apr 2002, Wilson Fletcher wrote:

>
> Can someone point me to some references re: how to call BIOS interrupts
> in Linux ?
>
> I don't want 1000 messages telling me it can't be done. I know that
> Linux doesn't support the bios interrupts as it stands.
>
> Specifically 15h on a Toshiba laptop ( if your interested :-) )
>
> Thanks,
>
> Wilson Fletcher
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-assembly" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>

Re: BIOS interrupts

[Rudolf Marek]

Hello,

As I already wrote here. In  SVGAlib is a subdir called lrmi - Linux Real 
Mode Interface.

it has servicess to call ints. & map ROM.

Regards
		Rudolf




On Thu, 18 Apr 2002, Wilson Fletcher wrote:

> Date: Thu, 18 Apr 2002 07:40:13 +0000
> From: Wilson Fletcher <mgpl1@zeta.org.au>
> To: linux-assembly@vger.kernel.org
> Subject: BIOS interrupts
> 
> 
> Can someone point me to some references re: how to call BIOS interrupts 
> in Linux ?
> 
> I don't want 1000 messages telling me it can't be done. I know that 
> Linux doesn't support the bios interrupts as it stands.
> 
> Specifically 15h on a Toshiba laptop ( if your interested :-) )
> 
> Thanks,
> 
> Wilson Fletcher
> 
> -
> To unsubscribe from this list: send the line "unsubscribe linux-assembly" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 
> 
> 

Bios interrupts

[Electroniks New]

Hi,
  1) i don't exactly understand the ports (Bios data).
   I also understand that linux does override the bios
   functions so that more functionality is acheived.

  2) Can you send the standard ports for use and i may
later use inb and 
     oub on  those ports for data exchange.
 
  3) Also what does jmp short $+2 instruction do ?How
can i change it into   AT&T syntax or inline assembly
? Also what does instruction "in al,64h" do .
   I found these on the net.They are dos code i
assume. Is "in" same as mov .
   If not how do they differ ?  The article was named
Enabling the A20 line.
  (never mind the article).
   It somewhere says enable  .
   Any idea where can i change into AT&T syntax.It is
in Intel syntax. 
  Any idea of sleep instruction in assembly. I tried
but couldn't find .
    I tried a couple of jmps but it never slows down
.How to make the pc sleep 
    (asm instruction for sleep (CPU idle).I put 16000
jmps loops but didn't 
    slow down a bit . 
 
  4) If possible please explain how to use keyboard in
a similar manner.
   (If time permits then simple mouse code).
  
   5)I don't understand the keyboard interrupts 0x64 ,
mouse 0x33 and in some 
    sites  i see the keyboard controllers as 0x64
where as in some sites the 
     code contains  0x10.So what should i use in my
program.
 
  6) Is there any documentation for these ports to
read and write data.


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Re: Bios interrupts

[Richard B. Johnson]

On Tue, 21 Jan 2003, Electroniks New wrote:

> Hi,
>   1) i don't exactly understand the ports (Bios data).
>    I also understand that linux does override the bios
>    functions so that more functionality is acheived.
> 
>   2) Can you send the standard ports for use and i may
> later use inb and 
>      oub on  those ports for data exchange.
>
>   3) Also what does jmp short $+2 instruction do ?How
> can i change it into   AT&T syntax or inline assembly
> ? Also what does instruction "in al,64h" do .
>    I found these on the net.They are dos code i
> assume. Is "in" same as mov .
[SNIPPED...]

Linux is an operating system that does all that stuff for you.
In fact, it prevents user code from touching hardware ar all.
If you learn the Unix/Posix stuff, you will never have to play
with assembly language again.

Linux operates all of the standard PC hardware in a standard
way that allows programs to use open()/close()/read()/write()/
and ioctl() to "talk" to hardware in a standard high-efficiency
way. If you have additional hardware that Linux doesn't "know"
about, then you can write a device-driver (module) for it.

Cheers,
Dick Johnson
Penguin : Linux version 2.4.18 on an i686 machine (797.90 BogoMips).
Why is the government concerned about the lunatic fringe? Think about it.