diff --git a/src/burn/devices/nmk112.cpp b/src/burn/devices/nmk112.cpp
new file mode 100644
index 000000000..605e041ab
--- /dev/null
+++ b/src/burn/devices/nmk112.cpp
@@ -0,0 +1,75 @@
+// license:BSD-3-Clause
+// copyright-holders:Alex W. Jackson
+// NMK112 - NMK custom IC for bankswitching the sample ROMs of a pair of OKI6295 ADPCM chips
+
+#include "burnint.h"
+#include "msm6295.h"
+
+#define TABLESIZE   0x100
+#define BANKSIZE    0x10000
+
+static UINT8 page_mask;
+static UINT8 current_bank[8];
+static UINT32 romlen[2];
+static UINT8 *romdata[2];
+
+void NMK112_okibank_write(INT32 offset, UINT8 data)
+{
+	current_bank[offset] = data;
+
+	INT32 chip = (offset & 4) / 4;
+	INT32 size = romlen[chip];
+	if (size == 0) return;
+
+	INT32 banknum = offset & 3;
+	INT32 paged = (page_mask & (1 << chip));
+
+	UINT8 *rom = romdata[chip];
+
+	INT32 bankaddr = (data * BANKSIZE) % size;
+
+	if ((paged) && (banknum == 0))
+	{
+		MSM6295SetBank(chip, rom + bankaddr + 0x400, 0x00400, (BANKSIZE - 1));
+	}
+	else
+	{
+		MSM6295SetBank(chip, rom + bankaddr, 0x00000 + (banknum * BANKSIZE), (banknum * BANKSIZE) + (BANKSIZE - 1));
+	}
+
+	if (paged)
+	{
+		MSM6295SetBank(chip, rom + bankaddr + (banknum * TABLESIZE), (banknum * TABLESIZE), (banknum * TABLESIZE) + (TABLESIZE - 1));
+	}
+}
+
+void NMK112Reset()
+{
+	for (INT32 i = 0; i < 8; i++) {
+		NMK112_okibank_write(i, 0);
+	}
+}
+
+void NMK112_init(UINT8 disable_page_mask, UINT8 *region0, UINT8 *region1, INT32 length0, INT32 length1)
+{
+	romdata[0] = region0;
+	romdata[1] = region1;
+	romlen[0]  = length0;
+	romlen[1]  = length1;
+	page_mask  = ~disable_page_mask;
+
+	NMK112Reset();
+}
+
+INT32 NMK112_Scan(INT32 nAction)
+{
+	SCAN_VAR(current_bank);
+
+	if (nAction & ACB_WRITE) {
+		for (INT32 i = 0; i < 8; i++) {
+			NMK112_okibank_write(i, current_bank[i]);
+		}
+	}
+
+	return 0;
+}
diff --git a/src/burn/devices/nmk112.h b/src/burn/devices/nmk112.h
new file mode 100644
index 000000000..be13de3e4
--- /dev/null
+++ b/src/burn/devices/nmk112.h
@@ -0,0 +1,4 @@
+void NMK112_okibank_write(INT32 offset, UINT8 data);
+void NMK112Reset();
+void NMK112_init(UINT8 disable_page_mask, UINT8 *region0, UINT8 *region1, INT32 len0, INT32 len1);
+INT32 NMK112_Scan(INT32 nAction);
diff --git a/src/burn/drv/cave/d_sailormn.cpp b/src/burn/drv/cave/d_sailormn.cpp
index 5e0a1efd6..771c128c5 100644
--- a/src/burn/drv/cave/d_sailormn.cpp
+++ b/src/burn/drv/cave/d_sailormn.cpp
@@ -829,7 +829,6 @@ static INT32 DrvScan(INT32 nAction, INT32 *pnMin)
 		MSM6295Scan(0, nAction);
 		MSM6295Scan(1, nAction);
 		BurnYM2151Scan(nAction);
-		NMK112_Scan(nAction);
 
 		SCAN_VAR(nVideoIRQ);
 		SCAN_VAR(nSoundIRQ);