Xref:	news2.mv.net comp.os.msdos.djgpp:2614
From:	jason AT PROBLEM_WITH_INEWS_DOMAIN_FILE (Jason Singer)
Newsgroups:	comp.os.msdos.djgpp
Subject:	_my_ds Help!
Date:	11 Apr 1996 01:16:35 GMT
Organization:	I need to put my ORGANIZATION here.
Lines:	45
Message-ID:	<4khmhj$3bl@mozo.cc.purdue.edu>
NNTP-Posting-Host:	hillres57.cc.purdue.edu
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

For the function of 'movedata', it gives the example of:

     short blank_row_buf[ScreenCols()];
     /* scroll screen */
     movedata(_dos_ds, 0xb8000 + ScreenCols()*2,
              _dos_ds, 0xb8000,
              ScreenCols() * (ScreenRows()-1) * 2);
     /* fill last row */
     movedata(_my_ds, (int)blank_row_buf,
              _dos_ds, 0xb8000 + ScreenCols()*(ScreenRows()-1)*2,
               ScreenCols() * 2);

It gives a warning on '_my_ds'.
What is the problem?  

What I really want to do is copy a 64000 byte buffer
to the screen (0xA000 or 0xA0000 in protected mode).

So, can't I just do:

main()
{
   unsigned char *buffer;

   buffer = (unsigned char *) malloc (64000);
   /* Sets the whole screen to purple */
   memset(buffer, 5, 64000);

   /* This is my own function that sets the video mode to 13h */
   set_mode(0x13);

   movedata(_my_ds, (unsigned char *) buffer, _dos_ds, 0xA0000, 64000);

   getch();

   set_mode(0x03);

   free(buffer);
}

So, please tell me all the errors that I have made and
what all includes do I need?  Thanks!

Jason
 

- Raw text -