On Thu, 17 Jan 2008, [EMAIL PROTECTED] wrote:
> A task I used to do regularly when programming in Turbo Pascal
> was to read the BIOS Rom Font. I first picked this up to make
> "Splash" Screens for Text Mode programs that wrote out big
> several lines high using the character it was made of
>
> FFFFF PPPPP CCC
> F P P C
> FFF PPPP C
> F P C
> F P CCC
>
> Something like that. Using the ROM Bios font
> allowed me to make a call like BigWord('FPC');
> without having the font be part of the program.
> I haven't been able to locate my old source but can probably
> find them. If I remember correctly they are located at
> 16 bit real mode address F000:FA6E. I also used
> them as a failsafe while in Graphics mode if BGI font
> file was not loaded. I wrote text output routines using
> putpixel and the ROM fonts. I also used them when
> divising my own 2d graphics primitives in Pascals
> built in assembler (I never completely finished this).
>
> I'm looking into doing some SDL programming and want
> a fallback text output method if font files aren't available.
>
> The question. Is this font accessible from linux; do I have
> to be root ? How do I make the 16 bit segment/offset address
> into a 32 bit pointer to access these fonts ?
This font is not accessible. Linux does not allow direct hardware
access unless you write a device driver.
Michael.
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