Optimized the way physical screen updates are done. Now only

update what has actually been touched. This should speed up
screen access on slow hardware.
Introduced setting of "destructive" cursor size, much like
the old hardware cursor.

1 files changed, 4 insertions, 2 deletions

diff --git a/sys/isa/syscons.h b/sys/isa/syscons.h
index 9e6083f..67b444d 100644
--- a/sys/isa/syscons.h
+++ b/sys/isa/syscons.h
@@ -25,7 +25,7 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- *	$Id: syscons.h,v 1.2 1995/02/25 20:09:21 pst Exp $
+ *	$Id: syscons.h,v 1.4 1995/03/03 08:37:08 sos Exp $
  */
 
 #ifndef SYSCONS_H
@@ -52,7 +52,6 @@
 #define CURSOR_SHOWN 	0x00400
 #define MOUSE_ENABLED	0x00800
 #define UPDATE_MOUSE	0x01000
-#define UPDATE_SCREEN	0x02000
 
 /* configuration flags */
 #define VISUAL_BELL	0x00001
@@ -118,6 +117,8 @@ typedef struct scr_stat {
 	int 		ypos;			/* current Y position */
 	int 		xsize;			/* X size */
 	int 		ysize;			/* Y size */
+	int		start;			/* modified area start */
+	int		end;			/* modified area end */
 	term_stat 	term;			/* terminal emulation stuff */
 	int	 	status;			/* status (bitfield) */
 	u_short 	*cursor_pos;		/* cursor buffer position */
@@ -197,6 +198,7 @@ static void set_vgaregs(char *modetable);
 static void set_font_mode();
 static void set_normal_mode();
 static void copy_font(int operation, int font_type, char* font_image);
+static void set_destructive_cursor_size(scr_stat *scp);
 static void draw_mouse_image(scr_stat *scp);
 static void save_palette(void);
        void load_palette(void);