[fpc-pascal] Accessing ROM BIOS Font in Linux.

[Anthony W.Henry]

On Thu, 2008-01-17 at 11:48 +0100, Vinzent Hoefler wrote:
> On Thursday 17 January 2008 01:27, Anthonyh63 at comcast.net wrote:
> 
> > The question.   Is this font accessible from linux; do I have
> > to be root ?
> 
> Yes. Yes.
> 
> "/dev/mem" should be the raw memory device (where even the BIOS "image" 
> can be read from), but this device which is only accessible to root.
> 
> > How do I make the 16 bit segment/offset address 
> > into a 32 bit pointer to access these fonts ?
> 
> The same as in the old days: Multiply the segment with 16 and add the 
> offset, which gives you the 32 bit (absolute/physical) address. This is 
> basically the offset into the "/dev/mem" device file and thus can be 
> fed to the (f)seek...
> 
> 
> Vinzent.

          Thank you,  I have tended to shy away from touching
stuff in /dev except when administrating my system.  I just
learned something new about Linux :).   This doesn't sound
like I can use this conveniently.  

And yes I did mean if I can't find another font to use the 
BIOS font as a fall back.  I'm sure I can find a Free Font
somewhere and link it into my code.   

Anthony

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