Changing the DOS font

While looking through Ralph Browns interrupt list I found interrupts for obtaining pointers to the DOS font characters, one of the memory loactaions was F000FA6Eh for the 8x8 set, but these memory locations only contain charaters 00h-7Fh. I found that interrupts 1Fh, 43h, and 44h claim to be associated with characters 80h-FFh but the documentation says nothing about what to do with these interrupts.
I did notice that interrupt 43h said "This is not a callable vector". Does each interrupt have a vector (like a memmory location) that somehow you can read from or obtain a pointer to?

Comments

  • : Does each interrupt have a vector (like a memmory location) that somehow you can read from or obtain a pointer to?

    You know ints do right??? for vector, look at mem location (int# * 4) for rmode segment & (int# * 4) + 2 for offset.. i think, dunno try it!?!

    well mail me or reply.
  • : : Does each interrupt have a vector (like a memmory location) that somehow you can read from or obtain a pointer to?
    :
    : You know ints do right??? for vector, look at mem location (int# * 4) for rmode segment & (int# * 4) + 2 for offset.. i think, dunno try it!?!
    :
    : well mail me or reply.
    :

    You were right about about the memory locations:
    (int * 4) for segment
    (int * 4) + 2 for offset
Sign In or Register to comment.

Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Categories

In this Discussion