diff --git a/src/mame/drivers/raiden2.c b/src/mame/drivers/raiden2.c
index 666c5414753..3725990b3e0 100644
--- a/src/mame/drivers/raiden2.c
+++ b/src/mame/drivers/raiden2.c
@@ -381,6 +381,25 @@ WRITE16_MEMBER(raiden2_state::cop_reg_low_w)
 	cop_regs[offset] = (cop_regs[offset] & ~UINT32(mem_mask)) | (data & mem_mask);
 }
 
+UINT8 raiden2_state::cop_calculate_collsion_detection(running_machine *machine)
+{
+	static UINT8 res;
+
+	res = 3;
+
+	/* outbound X check */
+	if(cop_collision_info[0].max_x >= cop_collision_info[1].min_x && cop_collision_info[0].min_x <= cop_collision_info[1].max_x)
+		res &= ~1;
+
+	/* outbound Y check */
+	if(cop_collision_info[0].max_y >= cop_collision_info[1].min_y && cop_collision_info[0].min_y <= cop_collision_info[1].max_y)
+		res &= ~2;
+
+	/* TODO: special collision detection for Zero Team */
+
+	return res;
+}
+
 WRITE16_MEMBER(raiden2_state::cop_cmd_w)
 {
 	cop_status &= 0x7fff;
@@ -477,6 +496,42 @@ WRITE16_MEMBER(raiden2_state::cop_cmd_w)
 		// And probably 8 bytes too, but they zero all the rest
 		break;
 
+	case 0xa100:
+		cop_collision_info[0].y = (space.read_dword(cop_regs[0]+4));
+		cop_collision_info[0].x = (space.read_dword(cop_regs[0]+8));
+		break;
+
+	case 0xa900:
+		cop_collision_info[1].y = (space.read_dword(cop_regs[1]+4));
+		cop_collision_info[1].x = (space.read_dword(cop_regs[1]+8));
+		break;
+
+	case 0xb100:
+		/* Take hitbox param, TODO */
+		cop_collision_info[0].hitbox = space.read_word(cop_regs[2]);
+
+		cop_collision_info[0].min_x = cop_collision_info[0].x + (0 << 16);
+		cop_collision_info[0].min_y = cop_collision_info[0].y + (0 << 16);
+		cop_collision_info[0].max_x = cop_collision_info[0].x + (0x10 << 16);
+		cop_collision_info[0].max_y = cop_collision_info[0].y + (0x10 << 16);
+
+		/* do the math */
+		cop_hit_status = cop_calculate_collsion_detection(space.machine);
+		break;
+
+	case 0xb900:
+		/* Take hitbox param, TODO */
+		cop_collision_info[1].hitbox = space.read_word(cop_regs[3]);
+
+		cop_collision_info[1].min_x = cop_collision_info[1].x + (0 << 16);
+		cop_collision_info[1].min_y = cop_collision_info[1].y + (0 << 16);
+		cop_collision_info[1].max_x = cop_collision_info[1].x + (0x10 << 16);
+		cop_collision_info[1].max_y = cop_collision_info[1].y + (0x10 << 16);
+
+		/* do the math */
+		cop_hit_status = cop_calculate_collsion_detection(space.machine);
+		break;
+
 	default:
 		logerror("pcall %04x (%04x:%04x) [%x %x %x %x]\n", data, rps(space.machine), rpc(space.machine), cop_regs[0], cop_regs[1], cop_regs[2], cop_regs[3]);
 	}
@@ -999,7 +1054,7 @@ WRITE16_MEMBER(raiden2_state::raiden2_bank_w)
 
 READ16_MEMBER(raiden2_state::cop_collision_status_r)
 {
-	return 3;
+	return cop_hit_status;
 }
 
 WRITE16_MEMBER(raiden2_state::sprite_prot_x_w)
diff --git a/src/mame/includes/raiden2.h b/src/mame/includes/raiden2.h
index 20b35f393ec..d05462dafe6 100644
--- a/src/mame/includes/raiden2.h
+++ b/src/mame/includes/raiden2.h
@@ -100,7 +100,18 @@ public:
 	UINT16 sprite_prot_x,sprite_prot_y,dst1,dst2;
 	UINT16 sprite_prot_src_addr[2];
 
+	struct
+	{
+		int x,y;
+		int min_x,min_y,max_x,max_y;
+		UINT16 hitbox;
+	}cop_collision_info[2];
+
+	UINT16 cop_hit_status;
+
 	void draw_sprites(running_machine *machine, bitmap_t *bitmap, const rectangle *cliprect ,int pri_mask );
+	UINT8 cop_calculate_collsion_detection(running_machine *machine);
+
 };