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diff --git a/src/devices/machine/smioc.cpp b/src/devices/machine/smioc.cpp
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+// license:GPL-2.0+
+// copyright-holders:Brandon Munger
+/**********************************************************************
+
+ ROLM 9751 9005 System Monitor Input/Output Card emulation
+
+**********************************************************************/
+
+/*
+ Device SMIOC
+ Board Copyright - IBM Corp 1989 Made in USA
+
+ Labels:
+ * 98R0083
+ MN 90770AR
+
+ * EC# A65048R
+
+ Hardware:
+ * CPU - Intel N80C188 L0450591 @ ??MHz - U23
+ * MCU - Signetics SC87C451CCA68 220CP079109KA 97D8641 - U70
+ * DMA - KS82C37A - U46, U47, U48, U49, U50
+ * Memory - NEC D43256AGU-10LL 8948A9038 SRAM 32KB - U51
+ * Memory - Mitsubishi M5M187AJ 046101-35 SRAM 64K X 1?? - U37
+ Logic:
+ * U8 - 22V10-25JC
+ * U33 - 22V10-25JC
+ * U61 - 22V10-25JC
+ * U63 - 22V10-25JC
+ * U87 - 22V10-20JC
+ * U88 - 22V10-20JC
+ * U102 - 22V10-25JC
+ * U111 - 22V10-25JC
+
+ Switches:
+ * S1 - Board reset
+
+ Program Memory:
+ * 0x00000 - 0x07FFF : SRAM D43256AGU-10LL 32KB
+ * 0xF8000 - 0xFFFFF : ROM 27C256 PLCC32 32KB
+
+ IO Memory:
+ * Unknown
+
+*/
+
+#include "emu.h"
+#include "smioc.h"
+
+
+//**************************************************************************
+// MACROS / CONSTANTS
+//**************************************************************************
+
+#define I188_TAG "smioc_i188" // U23
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+DEFINE_DEVICE_TYPE(SMIOC, smioc_device, "rolm_smioc", "ROLM SMIOC")
+
+//-------------------------------------------------
+// ROM( SMIOC )
+//-------------------------------------------------
+
+ROM_START( smioc )
+ ROM_REGION( 0x8000, "rom", 0 )
+ ROM_LOAD( "smioc.27256.u65", 0x0000, 0x8000, CRC(25b93192) SHA1(8ee9879033623490ce6703ba5429af2b16dbae84) )
+ROM_END
+
+//-------------------------------------------------
+// rom_region - device-specific ROM region
+//-------------------------------------------------
+
+const tiny_rom_entry *smioc_device::device_rom_region() const
+{
+ return ROM_NAME( smioc );
+}
+
+//-------------------------------------------------
+// ADDRESS_MAP( smioc_mem )
+//-------------------------------------------------
+
+static ADDRESS_MAP_START( smioc_mem, AS_PROGRAM, 8, smioc_device )
+ AM_RANGE(0x00000, 0x07FFF) AM_RAM AM_SHARE("smioc_ram")
+ AM_RANGE(0xF8000, 0xFFFFF) AM_ROM AM_REGION("rom", 0)
+ADDRESS_MAP_END
+
+MACHINE_CONFIG_MEMBER( smioc_device::device_add_mconfig )
+ /* CPU - Intel 80C188 */
+ MCFG_CPU_ADD(I188_TAG, I80188, XTAL_20MHz / 2) // Clock division unknown
+ MCFG_CPU_PROGRAM_MAP(smioc_mem)
+MACHINE_CONFIG_END
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// smioc_device - constructor
+//-------------------------------------------------
+
+smioc_device::smioc_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
+ device_t(mconfig, SMIOC, tag, owner, clock),
+ m_smioccpu(*this, I188_TAG),
+ m_smioc_ram(*this, "smioc_ram")
+{
+}
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void smioc_device::device_start()
+{
+}
+
+//-------------------------------------------------
+// device_reset - device-specific reset
+//-------------------------------------------------
+
+void smioc_device::device_reset()
+{
+ /* Reset CPU */
+ m_smioccpu->reset();
+}