diff --git a/src/mame/sunwise/jankmg2.cpp b/src/mame/sunwise/jankmg2.cpp
index f705295b4..34b1e5779 100644
--- a/src/mame/sunwise/jankmg2.cpp
+++ b/src/mame/sunwise/jankmg2.cpp
@@ -1,5 +1,5 @@
 // license:BSD-3-Clause
-// copyright-holders:
+// copyright-holders:AJR
 
 /*
 Ganso Janken Man 2
@@ -31,6 +31,7 @@ public:
 	jankmg2_state(const machine_config &mconfig, device_type type, const char *tag)
 		: driver_device(mconfig, type, tag)
 		, m_maincpu(*this, "maincpu")
+		, m_dacbank(*this, "dacbank")
 	{ }
 
 	void jankmg2(machine_config &config);
@@ -40,6 +41,9 @@ protected:
 
 private:
 	required_device<z80_device> m_maincpu;
+	required_memory_bank m_dacbank;
+
+	void dacbank_w(u8 data);
 
 	void program_map(address_map &map) ATTR_COLD;
 	void io_map(address_map &map) ATTR_COLD;
@@ -48,19 +52,35 @@ private:
 
 void jankmg2_state::machine_start()
 {
+	m_dacbank->configure_entries(0, 8, memregion("dac_data")->base(), 0x8000);
+	m_dacbank->set_entry(0);
 }
 
 
+void jankmg2_state::dacbank_w(u8 data)
+{
+	m_dacbank->set_entry(data & 0x07);
+}
+
 void jankmg2_state::program_map(address_map &map)
 {
 	map(0x0000, 0x3fff).rom();
 	map(0x4000, 0x47ff).ram();
+	map(0x8000, 0xffff).bankr(m_dacbank);
 }
 
 void jankmg2_state::io_map(address_map &map)
 {
 	map.global_mask(0xff);
-	//map(0x??, 0x??).rw("ctc", FUNC(z80ctc_device::read), FUNC(z80ctc_device::write));
+	map(0x40, 0x44).lw8(NAME([this] (offs_t offset, u8 data) { logerror("%s: Writing %02X to output %d\n", machine().describe_context(), data, offset); }));
+	map(0x50, 0x50).portr("DSW1");
+	map(0x51, 0x51).portr("DSW2");
+	map(0x52, 0x52).portr("IN0");
+	map(0x53, 0x53).portr("IN1");
+	map(0x54, 0x55).lw8(NAME([this] (offs_t offset, u8 data) { logerror("%s: Writing %02X to output %d\n", machine().describe_context(), data, offset + 5); }));
+	map(0x56, 0x56).w("dac", FUNC(dac_byte_interface::write));
+	map(0x57, 0x57).w(FUNC(jankmg2_state::dacbank_w));
+	map(0x58, 0x5b).rw("ctc", FUNC(z80ctc_device::read), FUNC(z80ctc_device::write));
 }
 
 
@@ -75,6 +95,16 @@ static INPUT_PORTS_START( jankmg2 )
 	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
 	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
 
+	PORT_START("IN1")
+	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
+	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
+	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )
+	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
+	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
+	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
+	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
+	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
+
 	PORT_START("DSW1")
 	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW1:1")
 	PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
@@ -153,6 +183,7 @@ void jankmg2_state::jankmg2(machine_config &config)
 }
 
 
+// 元祖ジャンケンマン
 ROM_START( jankmg )
 	ROM_REGION( 0x4000, "maincpu", 0 )
 	ROM_LOAD( "gjk1.u17", 0x0000, 0x4000, CRC(61f5656a) SHA1(67de8e9bcd305b8e19b46f788d5925b0eeb0c72b) )
@@ -162,6 +193,7 @@ ROM_START( jankmg )
 	// 3 more unpopulated ROM spaces at u14, u15 and u16
 ROM_END
 
+// 元祖ジャンケンマン2
 ROM_START( jankmg2 )
 	ROM_REGION( 0x4000, "maincpu", 0 )
 	ROM_LOAD( "gjv1.1.p.u17", 0x0000, 0x4000, CRC(1aa201e7) SHA1(943dff75a46775dd12aed07659dff3d961a58211) )
@@ -171,6 +203,7 @@ ROM_START( jankmg2 )
 	// 3 more unpopulated ROM spaces at u14, u15 and u16
 ROM_END
 
+// プリティープレゼント
 ROM_START( ppresent )
 	ROM_REGION( 0x4000, "maincpu", 0 )
 	ROM_LOAD( "ppr1.u17", 0x0000, 0x4000, CRC(c4a38d1c) SHA1(cfab8e494794ecdb7ac3418b5e71b7c028656456) )
@@ -183,6 +216,6 @@ ROM_END
 } // anonymous namespace
 
 
-GAME( 1995, jankmg,   0, jankmg2, jankmg2, jankmg2_state, empty_init, ROT0, "Sunwise", "Ganso Janken Man",   MACHINE_NOT_WORKING | MACHINE_NO_SOUND ) // date according to manual
-GAME( 199?, jankmg2,  0, jankmg2, jankmg2, jankmg2_state, empty_init, ROT0, "Sunwise", "Ganso Janken Man 2", MACHINE_NOT_WORKING | MACHINE_NO_SOUND )
-GAME( 199?, ppresent, 0, jankmg2, jankmg2, jankmg2_state, empty_init, ROT0, "Sunwise", "Pretty Present",     MACHINE_NOT_WORKING | MACHINE_NO_SOUND )
+GAME( 1995, jankmg,   0, jankmg2, jankmg2, jankmg2_state, empty_init, ROT0, "Sunwise", "Ganso Janken Man",   MACHINE_NOT_WORKING ) // date according to manual
+GAME( 199?, jankmg2,  0, jankmg2, jankmg2, jankmg2_state, empty_init, ROT0, "Sunwise", "Ganso Janken Man 2", MACHINE_NOT_WORKING )
+GAME( 199?, ppresent, 0, jankmg2, jankmg2, jankmg2_state, empty_init, ROT0, "Sunwise", "Pretty Present",     MACHINE_NOT_WORKING )