diff --git a/gr-sim/gr-sim.c b/gr-sim/gr-sim.c
index 84a188a3..80e0dcf4 100644
--- a/gr-sim/gr-sim.c
+++ b/gr-sim/gr-sim.c
@@ -766,6 +766,8 @@ int grsim_put_sprite(unsigned char *sprite_data, int xpos, int ypos) {
 	ram[CV]=*ptr;
 	ptr++;
 
+	ypos=ypos&0xfe;
+
 	while(1) {
 		address=gr_addr_lookup[ypos/2];
 		address+=xpos;
@@ -787,7 +789,7 @@ int grsim_put_sprite(unsigned char *sprite_data, int xpos, int ypos) {
 			ptr++;
 			address++;
 		}
-		ypos++;
+		ypos+=2;
 		ram[CV]--;
 		if (ram[CV]==0) break;
 	}
@@ -1100,3 +1102,29 @@ void basic_normal(void) {
 
 	return;
 }
+
+
+int hlin(int page, int x1, int x2, int at) {
+
+	unsigned short addr;
+	int i,hi;
+
+	addr=gr_addr_lookup[at/2];
+	hi=at&1;
+
+	addr+=(page*4)<<8;
+
+	for(i=x1;i<x2;i++) {
+		if (hi) {
+			ram[addr+i]=ram[addr+i]&0x0f;
+			ram[addr+i]|=ram[COLOR]&0xf0;
+		}
+		else {
+			ram[addr+i]=ram[addr+i]&0xf0;
+			ram[addr+i]|=ram[COLOR]&0x0f;
+		}
+
+	}
+
+	return 0;
+}
diff --git a/gr-sim/gr-sim.h b/gr-sim/gr-sim.h
index 3e0b09f9..fa384a44 100644
--- a/gr-sim/gr-sim.h
+++ b/gr-sim/gr-sim.h
@@ -19,6 +19,7 @@ void basic_vtab(int y);
 void basic_print(char *string);
 void basic_inverse(void);
 void basic_normal(void);
+int hlin(int page, int x1, int x2, int at);
 
 #define APPLE_UP        11
 #define APPLE_DOWN      10
diff --git a/gr-sim/tfv.c b/gr-sim/tfv.c
index c08239bd..fc718a38 100644
--- a/gr-sim/tfv.c
+++ b/gr-sim/tfv.c
@@ -40,6 +40,26 @@ static unsigned char test_sprite[]={
 	0x5f,0x5f,0x5f,0x5f,0xff,0xf2,0xf2,0xf2,
 };
 
+static unsigned char ship_forward[]={
+	0x5,0x3,
+	0x00,0x00,0x77,0x00,0x00,
+	0x50,0x55,0x77,0x55,0x50,
+	0x01,0x00,0x07,0x00,0x01,
+};
+
+static unsigned char ship_right[]={
+	0x5,0x3,
+	0x50,0x00,0x70,0x77,0x00,
+	0x01,0x55,0x77,0x55,0x50,
+	0x00,0x77,0x07,0x00,0x15,
+};
+
+static unsigned char ship_left[]={
+	0x5,0x3,
+	0x00,0x77,0x70,0x00,0x50,
+	0x50,0x55,0x77,0x55,0x01,
+	0x15,0x00,0x07,0x77,0x00,
+};
 
 int main(int argc, char **argv) {
 
@@ -228,22 +248,48 @@ int main(int argc, char **argv) {
 		if (ch==27) break;
 	}
 
+
+	/************************************************/
+	/* Flying					*/
+	/************************************************/
+
 	gr();
-	x=20;	y=21;
+	x=17;	y=30;
 	color_equals(0);
 
+	int direction=0;
+
+	color_equals(6);
+	int i;
+	for(i=0;i<20;i++) {
+		hlin(1, 0, 40, i);
+	}
+
+	color_equals(2);
+	for(i=20;i<48;i++) {
+		hlin(1, 0, 40, i);
+	}
 
 	while(1) {
 		ch=grsim_input();
 
 		if ((ch=='q') || (ch==27))  break;
-		if ((ch=='i') || (ch==APPLE_UP)) if (y>0) y-=2;
+		if ((ch=='i') || (ch==APPLE_UP)) if (y>20) y-=2;
 		if ((ch=='m') || (ch==APPLE_DOWN)) if (y<39) y+=2;
-		if ((ch=='j') || (ch==APPLE_LEFT)) if (x>0) x--;
-		if ((ch=='k') || (ch==APPLE_RIGHT)) if (x<39) x++;
+		if ((ch=='j') || (ch==APPLE_LEFT)) {
+			direction--;
+			if (direction<-1) direction=-1;
+		}
+		if ((ch=='k') || (ch==APPLE_RIGHT)) {
+			direction++;
+			if (direction>1) direction=1;
+		}
 
 		gr_copy(0x800,0x400);
-		grsim_put_sprite(test_sprite,x,y);
+
+		if (direction==0) grsim_put_sprite(ship_forward,x,y);
+		if (direction==-1) grsim_put_sprite(ship_left,x,y);
+		if (direction==1) grsim_put_sprite(ship_right,x,y);
 
 		grsim_update();