diff --git a/hash/neocd.xml b/hash/neocd.xml
index 97c796faf28..b309bbccaaf 100644
--- a/hash/neocd.xml
+++ b/hash/neocd.xml
@@ -552,8 +552,7 @@
 	  </part>
   </software>
 
-  <!-- sound doesn't work? -->
-  <software name="kof98" supported="no">
+  <software name="kof98">
 	  <description>King of Fighters '98, The - The Slugfest (1998)(SNK)(JP)[!][King of Fighters '98, The - Dream Match Never Ends][NGCD-2420 MT A04, NGCD-2421]</description>
 	  <year>199?</year>
 	  <publisher>SNK</publisher>
@@ -597,8 +596,7 @@
 	  </part>
   </software>
 
-  <!-- sound doesn't work? -->
-  <software name="lresort" supported="no">
+  <software name="lresort">
 	  <description>Last Resort (1994)(SNK)(JP-US)[!]</description>
 	  <year>199?</year>
 	  <publisher>SNK</publisher>
diff --git a/src/mame/includes/neogeo.h b/src/mame/includes/neogeo.h
index 46d10a4e813..8a20f0bf1dd 100644
--- a/src/mame/includes/neogeo.h
+++ b/src/mame/includes/neogeo.h
@@ -45,6 +45,7 @@ public:
 		m_has_sprite_bus = true;
 		m_has_text_bus = true;
 		m_has_ymrom_bus = true;
+		m_has_z80_bus = true;
 	}
 
 	/* memory pointers */
@@ -239,6 +240,7 @@ public:
 	bool m_has_sprite_bus;
 	bool m_has_text_bus;
 	bool m_has_ymrom_bus;
+	bool m_has_z80_bus;
 };
 
 
diff --git a/src/mess/drivers/ng_aes.c b/src/mess/drivers/ng_aes.c
index 0f63f663654..4aeb9d09f06 100644
--- a/src/mess/drivers/ng_aes.c
+++ b/src/mess/drivers/ng_aes.c
@@ -394,7 +394,10 @@ WRITE16_MEMBER(ng_aes_state::neocd_control_w)
 
 		case 0x0104:
 //          bprintf(PRINT_NORMAL, _T("  - NGCD 0xE00000 area -> 0x%02X (PC: 0x%06X)\n"), byteValue, SekGetPC(-1));
-			nActiveTransferArea = byteValue;
+			if (ACCESSING_BITS_0_7)
+			{
+				nActiveTransferArea = byteValue;
+			}
 			break;
 
 		case 0x0120:
@@ -407,6 +410,7 @@ WRITE16_MEMBER(ng_aes_state::neocd_control_w)
 			break;
 		case 0x0126:
 //          bprintf(PRINT_NORMAL, _T("  - NGCD Z80 BUSREQ -> 1 (PC: 0x%06X)\n"), SekGetPC(-1));
+			m_has_z80_bus = false;
 			space.machine().scheduler().synchronize();
 			m_audiocpu->set_input_line(INPUT_LINE_HALT, ASSERT_LINE);
 			break;
@@ -425,6 +429,7 @@ WRITE16_MEMBER(ng_aes_state::neocd_control_w)
 			break;
 		case 0x0146:
 //          bprintf(PRINT_NORMAL, _T("  - NGCD Z80 BUSREQ -> 0 (PC: 0x%06X)\n"), SekGetPC(-1));
+			m_has_z80_bus = true;
 			space.machine().scheduler().synchronize();
 			m_audiocpu->set_input_line(INPUT_LINE_HALT, CLEAR_LINE);
 			break;
@@ -582,9 +587,21 @@ WRITE8_MEMBER(ng_aes_state::neocd_transfer_w)
 			YM2610ADPCMAROM[nADPCMTransferBank + ((sekAddress & 0x0FFFFF) >> 1)] = byteValue;
 			break;
 		case 4:							// Z80
-			if ((sekAddress & 0xfffff) >= 0x20000) break;
 
-			NeoZ80ROMActive[(sekAddress & 0x1FFFF) >> 1] = byteValue;
+			// kof98 and lresort attempt to write here when the system still has the z80 bank
+			// it seems they attempt to write regular samples (not even deltat) maybe there is
+			// some kind of fall-through behavior, or it shouldn't be allowed to select a
+			// transfer area without the bus? - this should really be checked on hw
+			if (m_has_z80_bus)
+			{
+				YM2610ADPCMAROM[nADPCMTransferBank + ((sekAddress & 0x0FFFFF) >> 1)] = byteValue;
+			}
+			else
+			{
+		//	printf("sekAddress %08x %02x\n", sekAddress, data);
+				if ((sekAddress & 0xfffff) >= 0x20000) break;
+				NeoZ80ROMActive[(sekAddress & 0x1FFFF) >> 1] = byteValue;
+			}
 			break;
 		case 5:							// Text
 			NeoTextRAM[(sekAddress & 0x3FFFF) >> 1] = byteValue;