About BIOS

[vasadia dharmendra]

Hi All,

I am new to this field. we are developing a embedded PC based on Celeron PC
of 1 GHZ frequency. i have following queries regarding BISO

1. If I am new, how long it takes to write BIOS for embedded PC?
2. What knowledge is need to write BISO?
3. Suppose i purchase BIOS from AMI, Award or Phoenix, do i customize BIOS
according to my Board.
4. What tools are needed to write BIOS?
5. From where do i get complete understating of BIOS?
6.I have ARM7 LPC Board. Can I write Sample BIOS for this Board?
7. What is difference between BIOS and Boot Loader?

I would be very much grateful if any body address this questions

Lots of  thanks in advance

Dharmendra

[Tarl Neustaedter]

vasadia dharmendra wrote:
> Hi All,
>
> I am new to this field. we are developing a embedded PC based on Celeron 
> PC of 1 GHZ frequency. i have following queries regarding BISO
> If I am new, how long it takes to write BIOS for embedded PC?

I think you are on the wrong list. OpenBIOS is a project to build
Forth-based firmware to *replace* BIOS on PCs. This forth-based
firmware already exists on several non-PC platforms, including
Sun Microsystems' SPARC and Apple's & IBM's PowerPC systems.

If you're looking for BIOS, you probably won't find much here.
> What knowledge is need to write BISO?
> Suppose i purchase BIOS from AMI, Award or Phoenix, do i customize
>
> BIOS according to my Board.

In general, AMI and Phoenix are in the business of selling you
a customized BIOS after you tell them exactly what you need.
But you'll have to talk directly with them about that, not us.

[Tyler Pohl]

> If I am new, how long it takes to write BIOS for embedded PC?

Depends what you mean writing from scratch could take years.  Compiling
LinuxBIOS on supported motherboards could take a few hours.

2. What knowledge is need to write BISO?
>

Electronic knowledge the ability to read and understand chip datasheets

3. Suppose i purchase BIOS from AMI, Award or Phoenix, do i customize BIOS
> according to my Board.

Look at LinuxBIOS website

4. What tools are needed to write BIOS?
>

Linux, In circuit debuggers, and complete datasheets of your hardware.

5. From where do i get complete understating of BIOS?
>

LinuxBIOS web site.  Learning to program microcontrollers first.

6.I have ARM7 LPC Board. Can I write Sample BIOS for this Board?
>

Dam rights you can

7. What is difference between BIOS and Boot Loader?
>

BIOS handles all your Inputs and Outputs.  All the chips on your motherboard
down to the circuit level.  A bootloader just copies your os to memory.

Tyler Pohl