diff --git a/src/mame/drivers/astrcorp.cpp b/src/mame/drivers/astrcorp.cpp
index e6a0b2bc31d..166453de9dc 100644
--- a/src/mame/drivers/astrcorp.cpp
+++ b/src/mame/drivers/astrcorp.cpp
@@ -38,7 +38,6 @@ TODO:
   it is suspected there's a ROM overlay provided by the protection device;
 - winbingo and clones, zulu: these should be at the same state of the two above, but don't show anything on screen;
 - magibomba, westvent: need a redump of one of the program ROMs;
-- dinodino: decryption should be on par with the others but code jumps early into the weeds after RTE.
 
 *************************************************************************************************************/
 
@@ -97,6 +96,7 @@ protected:
 	// memory pointers
 	required_shared_ptr<u16> m_spriteram;
 
+	TIMER_DEVICE_CALLBACK_MEMBER(skilldrp_scanline_cb);
 	void draw_sprites_w(offs_t offset, u16 data, u16 mem_mask = ~0);
 	void eeprom_w(u8 data);
 	void showhand_outputs_w(offs_t offset, u16 data, u16 mem_mask = ~0);
@@ -107,7 +107,6 @@ protected:
 	u8      m_screen_enable;
 
 private:
-
 	// video-related
 	bitmap_ind16 m_bitmap;
 	u16     m_sprite_dma;
@@ -115,7 +114,6 @@ private:
 	output_finder<7> m_lamps;
 
 	u32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
-	TIMER_DEVICE_CALLBACK_MEMBER(skilldrp_scanline_cb);
 
 	void draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect);
 
@@ -152,6 +150,7 @@ public:
 	{ }
 
 	void astoneage(machine_config &config);
+	void dinodino(machine_config &config);
 	void magibombd(machine_config &config);
 	void init_astoneage();
 	void init_dinodino();
@@ -167,6 +166,7 @@ private:
 
 	TIMER_DEVICE_CALLBACK_MEMBER(astoneage_scanline_cb);
 	void astoneage_map(address_map &map);
+	void dinodino_map(address_map &map);
 	void magibombd_map(address_map &map);
 	void ramdac_map(address_map &map);
 
@@ -523,6 +523,23 @@ void astoneage_state::astoneage_map(address_map &map)
 	map(0xe00001, 0xe00001).rw(m_oki, FUNC(okim6295_device::read), FUNC(okim6295_device::write));
 }
 
+void astoneage_state::dinodino_map(address_map &map)
+{
+	map(0x000000, 0x03ffff).rom().mirror(0x800000); // POST checks for ROM crc at mirror
+	map(0x900000, 0x903fff).ram().share("nvram"); // battery
+	map(0xb00000, 0xb00fff).ram().share("spriteram");
+	map(0xb02000, 0xb02001).w(FUNC(astoneage_state::draw_sprites_w));
+	map(0xb04000, 0xb04001).portr("INPUTS");
+	map(0xb08001, 0xb08001).w(FUNC(astoneage_state::eeprom_w));
+	map(0xb0a000, 0xb0a001).w(FUNC(astoneage_state::skilldrp_outputs_w));
+	map(0xb0e000, 0xb0e001).portr("EEPROMIN");
+	map(0xc80000, 0xc801ff).ram().w(m_palette, FUNC(palette_device::write16)).share("palette");
+	// unknown location
+//  map(0x500001, 0x500001).w(FUNC(astoneage_state::screen_enable_w));
+	map(0x580001, 0x580001).w(FUNC(astoneage_state::oki_bank_w));
+	map(0xe00001, 0xe00001).rw(m_oki, FUNC(okim6295_device::read), FUNC(okim6295_device::write));
+}
+
 void astoneage_state::magibombd_map(address_map &map) // seems to use old style palette instead of ramdac
 {
 	map(0x000000, 0x03ffff).rom().mirror(0x800000);
@@ -816,6 +833,14 @@ void astoneage_state::magibombd(machine_config &config)
 	config.device_remove("ramdac");
 }
 
+void astoneage_state::dinodino(machine_config &config)
+{
+	magibombd(config);
+
+	m_maincpu->set_addrmap(AS_PROGRAM, &astoneage_state::dinodino_map);
+	TIMER(config.replace(), "scantimer").configure_scanline(FUNC(astoneage_state::skilldrp_scanline_cb), "screen", 0, 1);
+}
+
 /***************************************************************************
                                 ROMs Loading
 ***************************************************************************/
@@ -1857,7 +1882,7 @@ GAME( 2001,  magibombc, magibomb, magibombb, magibomb, magibomb_state,  init_mag
 GAME( 2001?, magibombe, magibomb, magibombb, magibomb, magibomb_state,  init_magibomb,  ROT0, "Astro Corp.",        "Magic Bomb (Ver. A3.1A)",            MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE )
 
 // Heavier encryption
-GAME( 2005,  dinodino,  0,        magibombd, skilldrp, astoneage_state, init_dinodino,  ROT0, "Astro Corp.",        "Dino Dino (Ver. A1.1)",              MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE ) // 13/01.2005 10:59
+GAME( 2005,  dinodino,  0,        dinodino,  skilldrp, astoneage_state, init_dinodino,  ROT0, "Astro Corp.",        "Dino Dino (Ver. A1.1)",              MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE ) // 13/01.2005 10:59
 GAME( 2005,  astoneag,  0,        astoneage, skilldrp, astoneage_state, init_astoneage, ROT0, "Astro Corp.",        "Stone Age (Astro, Ver. ENG.03.A)",   MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE ) // 2005/02/21
 GAME( 2005,  magibombd, magibomb, magibombd, skilldrp, astoneage_state, init_magibombd, ROT0, "Astro Corp.",        "Magic Bomb (Ver. AA.72D, 14/11/05)", MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE )
 GAME( 2006,  winbingo,  0,        magibombd, skilldrp, astoneage_state, init_winbingo,  ROT0, "Astro Corp.",        "Win Win Bingo (set 1)",              MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE ) // 15:47:48 Feb 23 2006