Font woes

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2 total messages Started by Darcy Boese Mon, 25 Jan 1993 13:58

#7728

Author: Darcy Boese
Date: Mon, 25 Jan 1993 13:58

15 lines
1062 bytes

I've been working on setting up a different font for some DOS applications,
using the example of the shareware program _Font Mania_ by Rexxcom.  I only
have one major obstacle which I can't quite figure out:

How do you choose between using an 8xNN font versus a 9xXX font with the
extra pixel leaving space between characters?

I am using assembly-language calls to BIOS (from within a Turbo Pascal
program) to load in the new fonts, exactly the same way that the demo uses,
but the space is there.

But I have noticed that if I run the demo program before I run my own
switcher, the space is gone.  	

So what BIOS calls do I need to make to switch between these two font modes?

Re: Font woes

#7787

Author: Darcy Boese
Date: Tue, 26 Jan 1993 18:01

9 lines
960 bytes

I think I can reduce my earlier question about the font modes to this one:

What BIOS calls do you need to make so that a VGA or SVGA card will respond
like an EGA?  I know that VGA etc. can simulate the EGA cards, which would
be perfect?

Also:  How do I detect if a card is already in EGA mode?  I assume that if
       I send the "go to EGA mode" command to an EGA card something bad will
       happen...

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