Must VGA BIOS go first ?

  • Thread starter Thread starter Kees
  • Start date Start date
K

Kees

Hi there!

I am wondering why the VGA BIOS is shown first and then the POST of
the BIOS starts.
There could be some time saved when it could be skipped, but HOW??
Anyone who can help me on this one??

Thanks very much !

Kees
 
Yes the VGA Bios has to be initialized first, it's a so called extension
Bios.
Before real testing starts the System has to know about it exists and
the initialization loads (replaces) INT 10H vectors.
That in turn is needed to show the Bios POST screen.
 
Kees said:
Hi there!

I am wondering why the VGA BIOS is shown first and then the POST of
the BIOS starts.
There could be some time saved when it could be skipped, but HOW??
Anyone who can help me on this one??

Thanks very much !

Kees
Click to expand...

It's probably coded in the MB BIOS. But doesn't the video bios have to
be initialized first, so that the rest of the POST will be shown on the
screen?

Jim M
 
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