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diff --git a/src/emu/memarray.c b/src/emu/memarray.c
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+/***************************************************************************
+
+ memarray.c
+
+ Generic memory array accessor helper.
+
+****************************************************************************
+
+ Copyright Aaron Giles
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+ * Neither the name 'MAME' nor the names of its contributors may be
+ used to endorse or promote products derived from this software
+ without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY AARON GILES ''AS IS'' AND ANY EXPRESS OR
+ IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL AARON GILES BE LIABLE FOR ANY DIRECT,
+ INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGE.
+
+***************************************************************************/
+
+#include "emu.h"
+
+
+//**************************************************************************
+// MEMORY ARRAY HELPER
+//**************************************************************************
+
+//-------------------------------------------------
+// memory_array - constructor
+//-------------------------------------------------
+
+memory_array::memory_array()
+ : m_base(NULL),
+ m_bytes(0),
+ m_membits(0),
+ m_bytes_per_entry(0)
+{
+}
+
+
+//-------------------------------------------------
+// set - configure the parameters
+//-------------------------------------------------
+
+void memory_array::set(void *base, UINT32 bytes, int membits, endianness_t endianness, int bpe)
+{
+ // validate inputs
+ assert(base != NULL);
+ assert(bytes > 0);
+ assert(membits == 8 || membits == 16 || membits == 32 || membits == 64);
+ assert(bpe == 1 || bpe == 2 || bpe == 4);
+
+ // populate direct data
+ m_base = base;
+ m_bytes = bytes;
+ m_membits = membits;
+ m_endianness = endianness;
+ m_bytes_per_entry = bpe;
+
+ // derive data
+ switch (bpe*1000 + membits*10 + endianness)
+ {
+ case 1*1000 + 8*10 + ENDIANNESS_LITTLE: m_reader = &memory_array::read8_from_8; m_writer = &memory_array::write8_to_8; break;
+ case 1*1000 + 8*10 + ENDIANNESS_BIG: m_reader = &memory_array::read8_from_8; m_writer = &memory_array::write8_to_8; break;
+ case 1*1000 + 16*10 + ENDIANNESS_LITTLE: m_reader = &memory_array::read8_from_16le; m_writer = &memory_array::write8_to_16le; break;
+ case 1*1000 + 16*10 + ENDIANNESS_BIG: m_reader = &memory_array::read8_from_16be; m_writer = &memory_array::write8_to_16be; break;
+ case 1*1000 + 32*10 + ENDIANNESS_LITTLE: m_reader = &memory_array::read8_from_32le; m_writer = &memory_array::write8_to_32le; break;
+ case 1*1000 + 32*10 + ENDIANNESS_BIG: m_reader = &memory_array::read8_from_32be; m_writer = &memory_array::write8_to_32be; break;
+ case 1*1000 + 64*10 + ENDIANNESS_LITTLE: m_reader = &memory_array::read8_from_64le; m_writer = &memory_array::write8_to_64le; break;
+ case 1*1000 + 64*10 + ENDIANNESS_BIG: m_reader = &memory_array::read8_from_64be; m_writer = &memory_array::write8_to_64be; break;
+
+ case 2*1000 + 8*10 + ENDIANNESS_LITTLE: m_reader = &memory_array::read16_from_8le; m_writer = &memory_array::write16_to_8le; break;
+ case 2*1000 + 8*10 + ENDIANNESS_BIG: m_reader = &memory_array::read16_from_8be; m_writer = &memory_array::write16_to_8be; break;
+ case 2*1000 + 16*10 + ENDIANNESS_LITTLE: m_reader = &memory_array::read16_from_16; m_writer = &memory_array::write16_to_16; break;
+ case 2*1000 + 16*10 + ENDIANNESS_BIG: m_reader = &memory_array::read16_from_16; m_writer = &memory_array::write16_to_16; break;
+ case 2*1000 + 32*10 + ENDIANNESS_LITTLE: m_reader = &memory_array::read16_from_32le; m_writer = &memory_array::write16_to_32le; break;
+ case 2*1000 + 32*10 + ENDIANNESS_BIG: m_reader = &memory_array::read16_from_32be; m_writer = &memory_array::write16_to_32be; break;
+ case 2*1000 + 64*10 + ENDIANNESS_LITTLE: m_reader = &memory_array::read16_from_64le; m_writer = &memory_array::write16_to_64le; break;
+ case 2*1000 + 64*10 + ENDIANNESS_BIG: m_reader = &memory_array::read16_from_64be; m_writer = &memory_array::write16_to_64be; break;
+
+ case 4*1000 + 8*10 + ENDIANNESS_LITTLE: m_reader = &memory_array::read32_from_8le; m_writer = &memory_array::write32_to_8le; break;
+ case 4*1000 + 8*10 + ENDIANNESS_BIG: m_reader = &memory_array::read32_from_8be; m_writer = &memory_array::write32_to_8be; break;
+ case 4*1000 + 16*10 + ENDIANNESS_LITTLE: m_reader = &memory_array::read32_from_16le; m_writer = &memory_array::write32_to_16le; break;
+ case 4*1000 + 16*10 + ENDIANNESS_BIG: m_reader = &memory_array::read32_from_16be; m_writer = &memory_array::write32_to_16be; break;
+ case 4*1000 + 32*10 + ENDIANNESS_LITTLE: m_reader = &memory_array::read32_from_32; m_writer = &memory_array::write32_to_32; break;
+ case 4*1000 + 32*10 + ENDIANNESS_BIG: m_reader = &memory_array::read32_from_32; m_writer = &memory_array::write32_to_32; break;
+ case 4*1000 + 64*10 + ENDIANNESS_LITTLE: m_reader = &memory_array::read32_from_64le; m_writer = &memory_array::write32_to_64le; break;
+ case 4*1000 + 64*10 + ENDIANNESS_BIG: m_reader = &memory_array::read32_from_64be; m_writer = &memory_array::write32_to_64be; break;
+
+ default: throw emu_fatalerror("Illegal memory bits/bus width combo in memory_array");
+ }
+}
+
+
+//-------------------------------------------------
+// set - additional setter variants
+//-------------------------------------------------
+
+void memory_array::set(const address_space &space, void *base, UINT32 bytes, int bpe)
+{
+ set(base, bytes, space.data_width(), space.endianness(), bpe);
+}
+
+void memory_array::set(const memory_share &share, int bpe)
+{
+ set(share.ptr(), share.bytes(), share.width(), share.endianness(), bpe);
+}
+
+void memory_array::set(const memory_array &helper)
+{
+ set(helper.base(), helper.bytes(), helper.membits(), helper.endianness(), helper.bytes_per_entry());
+}
+
+
+//-------------------------------------------------
+// read8_from_*/write8_to_* - entry read/write
+// heleprs for 1 byte-per-entry
+//-------------------------------------------------
+
+UINT32 memory_array::read8_from_8(int index) { return reinterpret_cast<UINT8 *>(m_base)[index]; }
+void memory_array::write8_to_8(int index, UINT32 data) { reinterpret_cast<UINT8 *>(m_base)[index] = data; }
+
+UINT32 memory_array::read8_from_16le(int index) { return reinterpret_cast<UINT8 *>(m_base)[BYTE_XOR_LE(index)]; }
+void memory_array::write8_to_16le(int index, UINT32 data) { reinterpret_cast<UINT8 *>(m_base)[BYTE_XOR_LE(index)] = data; }
+UINT32 memory_array::read8_from_16be(int index) { return reinterpret_cast<UINT8 *>(m_base)[BYTE_XOR_BE(index)]; }
+void memory_array::write8_to_16be(int index, UINT32 data) { reinterpret_cast<UINT8 *>(m_base)[BYTE_XOR_BE(index)] = data; }
+
+UINT32 memory_array::read8_from_32le(int index) { return reinterpret_cast<UINT8 *>(m_base)[BYTE4_XOR_BE(index)]; }
+void memory_array::write8_to_32le(int index, UINT32 data) { reinterpret_cast<UINT8 *>(m_base)[BYTE4_XOR_BE(index)] = data; }
+UINT32 memory_array::read8_from_32be(int index) { return reinterpret_cast<UINT8 *>(m_base)[BYTE4_XOR_BE(index)]; }
+void memory_array::write8_to_32be(int index, UINT32 data) { reinterpret_cast<UINT8 *>(m_base)[BYTE4_XOR_BE(index)] = data; }
+
+UINT32 memory_array::read8_from_64le(int index) { return reinterpret_cast<UINT8 *>(m_base)[BYTE8_XOR_BE(index)]; }
+void memory_array::write8_to_64le(int index, UINT32 data) { reinterpret_cast<UINT8 *>(m_base)[BYTE8_XOR_BE(index)] = data; }
+UINT32 memory_array::read8_from_64be(int index) { return reinterpret_cast<UINT8 *>(m_base)[BYTE8_XOR_BE(index)]; }
+void memory_array::write8_to_64be(int index, UINT32 data) { reinterpret_cast<UINT8 *>(m_base)[BYTE8_XOR_BE(index)] = data; }
+
+
+//-------------------------------------------------
+// read16_from_*/write16_to_* - entry read/write
+// heleprs for 2 bytes-per-entry
+//-------------------------------------------------
+
+UINT32 memory_array::read16_from_8le(int index) { return read8_from_8(index*2) | (read8_from_8(index*2+1) << 8); }
+void memory_array::write16_to_8le(int index, UINT32 data) { write8_to_8(index*2, data); write8_to_8(index*2+1, data >> 8); }
+UINT32 memory_array::read16_from_8be(int index) { return (read8_from_8(index*2) << 8) | read8_from_8(index*2+1); }
+void memory_array::write16_to_8be(int index, UINT32 data) { write8_to_8(index*2, data >> 8); write8_to_8(index*2+1, data); }
+
+UINT32 memory_array::read16_from_16(int index) { return reinterpret_cast<UINT16 *>(m_base)[index]; }
+void memory_array::write16_to_16(int index, UINT32 data) { reinterpret_cast<UINT16 *>(m_base)[index] = data; }
+
+UINT32 memory_array::read16_from_32le(int index) { return reinterpret_cast<UINT16 *>(m_base)[BYTE_XOR_LE(index)]; }
+void memory_array::write16_to_32le(int index, UINT32 data) { reinterpret_cast<UINT16 *>(m_base)[BYTE_XOR_LE(index)] = data; }
+UINT32 memory_array::read16_from_32be(int index) { return reinterpret_cast<UINT16 *>(m_base)[BYTE_XOR_BE(index)]; }
+void memory_array::write16_to_32be(int index, UINT32 data) { reinterpret_cast<UINT16 *>(m_base)[BYTE_XOR_BE(index)] = data; }
+
+UINT32 memory_array::read16_from_64le(int index) { return reinterpret_cast<UINT16 *>(m_base)[BYTE4_XOR_LE(index)]; }
+void memory_array::write16_to_64le(int index, UINT32 data) { reinterpret_cast<UINT16 *>(m_base)[BYTE4_XOR_LE(index)] = data; }
+UINT32 memory_array::read16_from_64be(int index) { return reinterpret_cast<UINT16 *>(m_base)[BYTE4_XOR_BE(index)]; }
+void memory_array::write16_to_64be(int index, UINT32 data) { reinterpret_cast<UINT16 *>(m_base)[BYTE4_XOR_BE(index)] = data; }
+
+
+//-------------------------------------------------
+// read32_from_*/write32_to_* - entry read/write
+// heleprs for 4 bytes-per-entry
+//-------------------------------------------------
+
+UINT32 memory_array::read32_from_8le(int index) { return read16_from_8le(index*2) | (read16_from_8le(index*2+1) << 16); }
+void memory_array::write32_to_8le(int index, UINT32 data) { write16_to_8le(index*2, data); write16_to_8le(index*2+1, data >> 16); }
+UINT32 memory_array::read32_from_8be(int index) { return (read16_from_8be(index*2) << 16) | read16_from_8be(index*2+1); }
+void memory_array::write32_to_8be(int index, UINT32 data) { write16_to_8be(index*2, data >> 16); write16_to_8be(index*2+1, data); }
+
+UINT32 memory_array::read32_from_16le(int index) { return read16_from_16(index*2) | (read16_from_16(index*2+1) << 16); }
+void memory_array::write32_to_16le(int index, UINT32 data) { write16_to_16(index*2, data); write16_to_16(index*2+1, data >> 16); }
+UINT32 memory_array::read32_from_16be(int index) { return (read16_from_16(index*2) << 16) | read16_from_16(index*2+1); }
+void memory_array::write32_to_16be(int index, UINT32 data) { write16_to_16(index*2, data >> 16); write16_to_16(index*2+1, data); }
+
+UINT32 memory_array::read32_from_32(int index) { return reinterpret_cast<UINT32 *>(m_base)[index]; }
+void memory_array::write32_to_32(int index, UINT32 data) { reinterpret_cast<UINT32 *>(m_base)[index] = data; }
+
+UINT32 memory_array::read32_from_64le(int index) { return reinterpret_cast<UINT32 *>(m_base)[BYTE_XOR_LE(index)]; }
+void memory_array::write32_to_64le(int index, UINT32 data) { reinterpret_cast<UINT32 *>(m_base)[BYTE_XOR_LE(index)] = data; }
+UINT32 memory_array::read32_from_64be(int index) { return reinterpret_cast<UINT32 *>(m_base)[BYTE_XOR_BE(index)]; }
+void memory_array::write32_to_64be(int index, UINT32 data) { reinterpret_cast<UINT32 *>(m_base)[BYTE_XOR_BE(index)] = data; }