🚀 go-pugleaf

In article <phil.702787613@adam.adelaide.edu.au> phil@adam.adelaide.edu.au (Phil Kernick) writes:
>I need to be able to display a large character (one of the standard ASCII
>set) in the middle of a VGA display.
>This does not sound like it should be too difficult, but up to now, I have
>not been able to find a way to do it, without having to define all of the
>character set myself.
>I was hoping to be able to use TurboPascal6.0, but the font support is only
>vector, so while I can draw big characters, they are not solid - which I
>require for my application.
>I have already grepped through the simtel archive, and cannot find anything
>like this.

If you have an EGA/VGA card you could try the following :-

Entry:
  AH = 11H, AL = 30H
  BL = 0  - Contents of vector 1FH
       1  - Contents of vector 43H
       2  - Address of ROM 8 x 14 font
       3  - Address of ROM 8 x 8 font
       4  - Address of second half of ROM 8 x 8 font
       5  - Address of ROM 9 x 14 alternate font
       6  - Address of ROM 8 x 16 font
       7  - Address of ROM 9 x 16 alternate font

Exit:
  ES:BP - Address required
  CX    - Height of matrix
  DL    - Rows minus one

Now you can decode the font and display it on the screen as you want.

I used this technique for displaying large letters on the screen and
waiting for the user to press the coressponding key.

Hope this helps.

Jeremy