Index: apps/plugins/superdom.c
===================================================================
--- apps/plugins/superdom.c	(revision 14152)
+++ apps/plugins/superdom.c	(working copy)
@@ -132,6 +132,7 @@
 void draw_cursor(void);
 int calc_strength(bool colour, int x, int y);
 void draw_board(void);
+void yield_to_rb(void);
 
 struct tile{
     signed int colour; /* -1 = Unset */
@@ -475,6 +476,13 @@
     rb->lcd_update();
 }
 
+void yield_to_rb(void) {
+    if (*rb->current_tick + (5*HZ)/100 > *rb->current_tick)
+        rb->sleep (*rb->current_tick + (5*HZ)/100 - *rb->current_tick);
+    else
+        rb->yield ();
+}
+
 void gen_resources(void) {
     gen_interest();
     int inccash = 0;
@@ -1601,7 +1609,7 @@
                         board[cursor.x][cursor.y].plane = 0;
                         board[cursor.x][cursor.y].nuke = 0;
                         draw_board();
-                        rb->sleep(HZ*2);
+			yield_to_rb();
                         humanres.moves--;
                     } else if(calc_strength(COLOUR_LIGHT, cursor.x, cursor.y)==
                               calc_strength(COLOUR_DARK, cursor.x, cursor.y)) {
@@ -1612,7 +1620,7 @@
                             board[cursor.x][cursor.y].plane = 0;
                             board[cursor.x][cursor.y].nuke = 0;
                             draw_board();
-                            rb->sleep(HZ*2);
+			    yield_to_rb();
                             humanres.moves--;
                         } else {
                             rb->splash(HZ, "Your troops were unable to" 
@@ -1854,7 +1862,7 @@
                                 compres.tanks++;
                                 compres.cash -= 300;
                                 draw_board();
-                                rb->sleep(HZ);
+				yield_to_rb();
                             }
                         }
                     }
@@ -1878,7 +1886,7 @@
                             compres.tanks++;
                             compres.cash -= 300;
                             draw_board();
-                            rb->sleep(HZ);
+			    yield_to_rb();
                         }
                     } else {
                         men_needed = (calc_strength(COLOUR_LIGHT, targets[i].x,
@@ -1897,7 +1905,7 @@
                             compres.cash = 0;
                         }
                         draw_board();
-                        rb->sleep(HZ);
+                        yield_to_rb();
                     }
                 }
             }
@@ -1925,13 +1933,13 @@
                     compres.cash -= men_needed;
                     compres.men += men_needed;
                     draw_board();
-                    rb->sleep(HZ);
+		    yield_to_rb();
                 } else {
                     board[threats[i].x][threats[i].y].men += compres.cash;
                     compres.men += compres.cash;
                     compres.cash = 0;
                     draw_board();
-                    rb->sleep(HZ);
+		    yield_to_rb();
                 }
             }
         } else if((total_str_diff+20)*15 < compres.cash) {
@@ -1953,7 +1961,7 @@
                                 board[threats[i].x][threats[i].y].men += 
                                         men_needed;
                                 draw_board();
-                                rb->sleep(HZ);
+				yield_to_rb();
                             }
                         }
                     } else {
@@ -1962,7 +1970,7 @@
                             compres.cash -= 600;
                             compres.planes++;
                             draw_board();
-                            rb->sleep(HZ);
+			    yield_to_rb();
                         }
                     }
                 }
@@ -1986,7 +1994,7 @@
                                 board[threats[i].x][threats[i].y].men += 
                                         men_needed;
                                 draw_board();
-                                rb->sleep(HZ);
+				yield_to_rb();
                             }
                         }
                     } else {
@@ -1995,7 +2003,7 @@
                             compres.tanks++;
                             compres.cash -= 300;
                             draw_board();
-                            rb->sleep(HZ);
+			    yield_to_rb();
                         }
                     }
                 }
@@ -2058,7 +2066,7 @@
                                     humanres.men -= board[adj.x][adj.y].men;
                                     board[adj.x][adj.y].men = 0;
                                     draw_board();
-                                    rb->sleep(HZ);
+				    yield_to_rb();
                                     compres.moves--;
                                 } else {
                                     rb->splash(HZ*2, "The computer attempted"
@@ -2076,7 +2084,7 @@
                                 humanres.men -= board[adj.x][adj.y].men;
                                 board[adj.x][adj.y].men = 0;
                                 draw_board();
-                                rb->sleep(HZ);
+				yield_to_rb();
                                 compres.moves--;
                             }
                         }
@@ -2101,7 +2109,7 @@
                                 board[i][j].nuke = false;
                                 board[i][j].men = 0;
                                 draw_board();
-                                rb->sleep(HZ);
+				yield_to_rb();
                                 compres.moves--;
                             } else {
                                 rb->splash(HZ*2, "The computer attempted to " 
@@ -2116,7 +2124,7 @@
                             board[i][j].nuke = false;
                             board[i][j].men = 0;
                             draw_board();
-                            rb->sleep(HZ);
+			    yield_to_rb();
                             compres.moves--;
                         }
                     }
@@ -2139,7 +2147,7 @@
                             board[i][j].nuke = false;
                             board[i][j].men = 0;
                             draw_board();
-                            rb->sleep(HZ);
+       			    yield_to_rb();
                             compres.moves--;
                         } else {
                             rb->splash(HZ*2, "The computer attempted to" 
@@ -2154,7 +2162,7 @@
                         board[i][j].nuke = false;
                         board[i][j].men = 0;
                         draw_board();
-                        rb->sleep(HZ);
+			yield_to_rb();
                         compres.moves--;
                     }
                 }