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From: olsen@eecs.nwu.edu (Jeff S. Olsen)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Direct memory access in Turbo C
Message-ID: <3580024@eecs.nwu.edu>
Date: 24 Jan 90 19:40:53 GMT
References: <25b6a0d3:4290comp.sys.ibm.pc@vpnet.UUCP>
Organization: Northwestern U, Evanston IL, USA
Lines: 28

to set up a pointer to the screen in turbo-c, do this:

#include <dos.h>

typedef struct cell {
  char letter;
  char attrib;
} CELL;

main ()
{
  CELL far *screen;

  screen = MK_FP(0xb800,0x0000); /* this is for the color screen */

  /* whatever you want here */
}


you could just make the screen   char far *screen   if you wanted to
deal with letter and attrib yourself.  The important part is the "far"
and the MK_FP which stands for make far pointer (which is a macro, so
you must include dos.h).

hope this helps.

Jeff Olsen
olsen@eecs.nwu.edu