On Sun, 30 Jul 2006 21:23:04 +0100
Dieter <[EMAIL PROTECTED]> wrote:
> > That's kind of what I was getting at. Not all systems using OGA ASICS
> > will necessarily have PC motherboards, LinuxBIOS
> > or any other kind of BIOS, or Linux kernels. Embedded machines sometimes
> > are really stripped. Getting the first prototyp
> >e working can be Really Hard if you don't see an 80x25 text display before
> >the first instruction executes. If the hardware
> > can't display a console all on its own, it can be next to impossible to
> > debug any initialization code at all. All this n
> >ecessarily requires a way to set the video mode with zero help from the host
> >computer.
>
> Include a 16850 UART clone in the ASIC, plus MAX232, plus 8 header pins?
It's even simpler than that. Provide a full custom ROM, let the
OGA leave reset state a few us earlier than the uP and you can
can see everything you want right away.
Really, ready at power up, custom video modes and things like
that are really simple. The hard part is having a graphics card
in the first place. So, as Patrick already suggested, we should
rather concentrate on the main issues than all these little details.
Attila Kinali
--
心をこめて聞け心をこめて話せ
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