Re: [OpenBIOS] Graphics mode bios

[Edwin Rhodes]

Hi, just read about your own graphics mode bios, cool, will you be releasing
the source code?
----- Original Message -----
From: "Arp Kruithof" 
To: 
Sent: Thursday, August 16, 2001 3:27 PM
Subject: Re: [OpenBIOS] Graphics mode bios
> From:           Arp Kruithof 
> To:             "zechmer" 
> Subject:        Re: [OpenBIOS] Graphics mode bios
> Send reply to:  [e-mail]
> Date sent:      Thu, 16 Aug 2001 16:26:05 +0200
>
> Hello Gavin/Bernhard
> > Hello Gavin,
>
> I certainly like the project - have been looking / thinking / dreaming
> about an open source BIOS for x86 for some years (not openBIOS)
> and some projects seem to be underway - I just have very little
> time myself at the moment so for now I'll happily read along ...
> > I once started writing my own BIOS which started already in
> > graphics (hercules monochrome graphics) mode back in the
>
> 1980's [pure
> > assembler].
> > I gave it up, because I couldn't init the keyboard correctly.
> > Each time I requested port 60h it didn't leave anything there.
> > Later I implemented the keyboard code from linux but this
> > didn't help me and the 286 board at all.
> > This was so frustrating, that I gave it up.
> > Perhaps some suggestions?
>
> Couldn'r resist reacting to the keyboard issue Bernhard mentioned.
> That shoudn't be too hard to do I think. A couple of sources might
> be:
> IBM AT Technical Reference which has a complete BIOS source
>
> listing - just to pick up on some tech details or ideas (not
> sugesting you copy the code just that reading it may give you a
> hint).
>
> 8042 datasheets for timing details etc. on original chip used
>
> Datasheets for popular chipsets that emulate the gate A20 &
>
> keyboard interface - they may even come with sample code
> supplied
>
> I should have most of that sitting on the bookshelf here so if you
> need to 'borough' the books let me know.
>
> Good luck
>
> Arp
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