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-rw-r--r--src/mess/machine/docg3.c828
1 files changed, 828 insertions, 0 deletions
diff --git a/src/mess/machine/docg3.c b/src/mess/machine/docg3.c
new file mode 100644
index 00000000000..2c756cb17f7
--- /dev/null
+++ b/src/mess/machine/docg3.c
@@ -0,0 +1,828 @@
+/*
+
+ M-Systems DiskOnChip G3 - Flash Disk with MLC NAND and M-Systems? x2 Technology
+
+ (c) 2009 Tim Schuerewegen
+
+*/
+
+#include "emu.h"
+#include "machine/docg3.h"
+
+#define VERBOSE_LEVEL ( 0 )
+
+INLINE void ATTR_PRINTF(3,4) verboselog( running_machine &machine, int n_level, const char *s_fmt, ... )
+{
+ if( VERBOSE_LEVEL >= n_level )
+ {
+ va_list v;
+ char buf[ 32768 ];
+ va_start( v, s_fmt );
+ vsprintf( buf, s_fmt, v );
+ va_end( v );
+ logerror( "%s: %s", machine.describe_context(), buf );
+ }
+}
+
+
+/***************************************************************************
+ IMPLEMENTATION
+***************************************************************************/
+
+// device type definition
+const device_type DISKONCHIP_G3 = &device_creator<diskonchip_g3_device>;
+
+//-------------------------------------------------
+// diskonchip_g3_device - constructor
+//-------------------------------------------------
+
+diskonchip_g3_device::diskonchip_g3_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+ : device_t(mconfig, DISKONCHIP_G3, "DiskOnChip G3", tag, owner, clock),
+ device_nvram_interface(mconfig, *this)
+{
+}
+
+
+UINT32 diskonchip_g3_device::g3_offset_data_1()
+{
+// printf( "block %d pages %d page %d planes %d plane %d user_data_size %d extra_area_size %d\n", doc->block, doc->pages, doc->page, doc->planes, doc->plane, doc->user_data_size, doc->extra_area_size);
+ return ((((m_block * m_pages) + m_page) * m_planes) + m_plane) * (m_user_data_size + m_extra_area_size);
+}
+
+UINT32 diskonchip_g3_device::g3_offset_data_2()
+{
+ return ((((m_block * m_pages) + m_page) * m_planes) + m_plane) * 16;
+}
+
+UINT32 diskonchip_g3_device::g3_offset_data_3()
+{
+ return m_block * 8;
+}
+
+UINT8 diskonchip_g3_device::g3_read_data()
+{
+ UINT8 data = 0;
+ UINT32 offset;
+ if (m_test == 0)
+ {
+ // read page data (512 + 16)
+ if (m_transfer_offset >= (m_user_data_size + m_extra_area_size))
+ {
+ m_transfer_offset = m_transfer_offset - (m_user_data_size + m_extra_area_size);
+ m_plane++;
+ }
+ offset = g3_offset_data_1() + m_transfer_offset;
+ data = m_data[0][offset];
+ }
+ else if (m_test == 1)
+ {
+ // read ??? (0x28 bytes)
+ if (m_transfer_offset < 0x20)
+ {
+ offset = g3_offset_data_1() + (m_user_data_size + m_extra_area_size) + (m_user_data_size - 16) + m_transfer_offset;
+ data = m_data[0][offset];
+ }
+ else if (m_transfer_offset < 0x28)
+ {
+ offset = g3_offset_data_3() + m_transfer_offset - 0x20;
+ data = m_data[2][offset];
+ }
+ else
+ {
+ data = 0xFF;
+ }
+ }
+ else if (m_test == 2)
+ {
+ // read erase block status
+ data = 0x00;
+ }
+ m_transfer_offset++;
+ return data;
+}
+
+READ16_MEMBER( diskonchip_g3_device::sec_1_r )
+{
+ UINT16 data;
+ if (m_sec_2[0x1B] & 0x40)
+ {
+ data = g3_read_data();
+ m_sec_2[0x1B] &= ~0x40;
+ }
+ else
+ {
+ data = (g3_read_data() << 0) | (g3_read_data() << 8);
+ }
+ verboselog( machine(), 9, "(DOC) %08X -> %04X\n", 0x0800 + (offset << 1), data);
+ return data;
+}
+
+void diskonchip_g3_device::g3_write_data(UINT8 data)
+{
+ UINT32 offset;
+ if (m_test == 3)
+ {
+ // read page data (512 + 16)
+ if (m_transfer_offset >= (m_user_data_size + m_extra_area_size))
+ {
+ m_transfer_offset = m_transfer_offset - (m_user_data_size + m_extra_area_size);
+ m_plane++;
+ }
+ if (m_transfer_offset == 0)
+ {
+ const UINT8 xxx[] = { 0x00, 0x00, 0x27, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+ offset = g3_offset_data_2();
+ memcpy( m_data[1] + offset, xxx, 16);
+ }
+ offset = g3_offset_data_1() + m_transfer_offset;
+ m_data[0][offset] = data;
+ }
+ m_transfer_offset++;
+}
+
+WRITE16_MEMBER( diskonchip_g3_device::sec_1_w )
+{
+ verboselog( machine(), 9, "(DOC) %08X <- %04X\n", 0x0800 + (offset << 1), data);
+ if (m_sec_2[0x1B] & 0x40)
+ {
+ g3_write_data(data);
+ m_sec_2[0x1B] &= ~0x40;
+ }
+ else
+ {
+ g3_write_data((data >> 0) & 0xFF);
+ g3_write_data((data >> 8) & 0xFF);
+ }
+}
+
+// #define DoC_G3_IO 0x0800
+// #define DoC_G3_ChipID 0x1000
+// #define DoC_G3_DeviceIdSelect 0x100a
+// #define DoC_G3_Ctrl 0x100c
+// #define DoC_G3_CtrlConfirm 0x1072
+// #define DoC_G3_ReadAddress 0x101a
+// #define DoC_G3_FlashSelect 0x1032
+// #define DoC_G3_FlashCmd 0x1034
+// #define DoC_G3_FlashAddr 0x1036
+// #define DoC_G3_FlashCtrl 0x1038
+// #define DoC_G3_Nop 0x103e
+
+UINT16 diskonchip_g3_device::sec_2_read_1000()
+{
+ if (m_device == 0)
+ {
+ return 0x0200;
+ }
+ else
+ {
+ return 0x008C;
+ }
+}
+
+UINT16 diskonchip_g3_device::sec_2_read_1074()
+{
+ if (m_device == 0)
+ {
+ return 0xFDFF;
+ }
+ else
+ {
+ return 0x02B3;
+ }
+}
+
+UINT8 diskonchip_g3_device::sec_2_read_1042()
+{
+ UINT8 data;
+ if ((m_block == 0) && (m_page == 0) && (m_transfersize == 0x27))
+ {
+ data = 0x07;
+ }
+ else
+ {
+ UINT32 offset = g3_offset_data_2() + 0x02;
+ data = m_data[1][offset]; //0x07; //data & ~(1 << 7);
+ if ((m_sec_2[0x41] & 0x10) == 0)
+ {
+ data = data & ~0x20;
+ }
+ if ((m_sec_2[0x41] & 0x08) == 0)
+ {
+ data = data & ~0x80;
+ }
+ if (m_test != 0)
+ {
+ data = 0x00;
+ }
+ }
+ return data;
+}
+
+UINT8 diskonchip_g3_device::sec_2_read_1046()
+{
+ if (m_test == 0)
+ {
+ UINT32 offset = g3_offset_data_2() + 0x06;
+ return m_data[1][offset];
+ }
+ else
+ {
+ return 0x00;
+ }
+}
+
+UINT8 diskonchip_g3_device::sec_2_read_1048()
+{
+ if (m_test == 0)
+ {
+ UINT32 offset = g3_offset_data_2() + 0x08;
+ return m_data[1][offset];
+ }
+ else
+ {
+ return 0x00;
+ }
+}
+
+UINT8 diskonchip_g3_device::sec_2_read_1049()
+{
+ if (m_test == 0)
+ {
+ UINT32 offset = g3_offset_data_2() + 0x09;
+ return m_data[1][offset];
+ }
+ else
+ {
+ return 0x00;
+ }
+}
+
+UINT8 diskonchip_g3_device::sec_2_read_104A()
+{
+ if (m_test == 0)
+ {
+ UINT32 offset = g3_offset_data_2() + 0x0A;
+ return m_data[1][offset];
+ }
+ else
+ {
+ return 0x00;
+ }
+}
+
+UINT8 diskonchip_g3_device::sec_2_read_104B()
+{
+ if (m_test == 0)
+ {
+ UINT32 offset = g3_offset_data_2() + 0x0B;
+ return m_data[1][offset];
+ }
+ else
+ {
+ return 0x00;
+ }
+}
+
+UINT8 diskonchip_g3_device::sec_2_read_104C()
+{
+ if (m_test == 0)
+ {
+ UINT32 offset = g3_offset_data_2() + 0x0C;
+ return m_data[1][offset];
+ }
+ else
+ {
+ return 0x00;
+ }
+}
+
+UINT8 diskonchip_g3_device::sec_2_read_104D()
+{
+ if (m_test == 0)
+ {
+ UINT32 offset = g3_offset_data_2() + 0x0D;
+ return m_data[1][offset];
+ }
+ else
+ {
+ return 0x00;
+ }
+}
+
+UINT8 diskonchip_g3_device::sec_2_read_104E()
+{
+ if (m_test == 0)
+ {
+ UINT32 offset = g3_offset_data_2() + 0x0E;
+ return m_data[1][offset];
+ }
+ else
+ {
+ return 0x00;
+ }
+}
+
+UINT8 diskonchip_g3_device::sec_2_read_104F()
+{
+ if (m_test == 0)
+ {
+ UINT32 offset = g3_offset_data_2() + 0x0F;
+ return m_data[1][offset];
+ }
+ else
+ {
+ return 0x00;
+ }
+}
+
+UINT8 diskonchip_g3_device::sec_2_read_100E()
+{
+ return 0x81;
+}
+
+UINT8 diskonchip_g3_device::sec_2_read_1014()
+{
+ return 0x01;
+}
+
+UINT8 diskonchip_g3_device::sec_2_read_1022()
+{
+ return 0x85;
+}
+
+UINT8 diskonchip_g3_device::sec_2_read_1038()
+{
+ // bit 0 = ?
+ // bit 1 = ? error 0x7C
+ // bit 2 = ? error 0x73
+ // bit 3 = ?
+ // bit 4 = ?
+ // bit 5 = ?
+ // bit 6 = ?
+ // bit 7 = ?
+ if (m_device == 0)
+ {
+ return 0x19;
+ }
+ else
+ {
+ return 0x38;
+ }
+}
+
+UINT16 diskonchip_g3_device::sec_2_read16(UINT32 offset)
+{
+ UINT16 data = (m_sec_2[offset+0] << 0) + (m_sec_2[offset+1] << 8);
+ switch (0x1000 + offset)
+ {
+ // ?
+ case 0x1000 : data = sec_2_read_1000(); break;
+ // ?
+ case 0x100E : data = sec_2_read_100E(); break;
+ // ?
+ case 0x1014 : data = sec_2_read_1014(); break;
+ // ?
+ case 0x1022 : data = sec_2_read_1022(); break;
+ // flash control
+ case 0x1038 : data = sec_2_read_1038(); break;
+ // flash ?
+ case 0x1042 : data = sec_2_read_1042(); break;
+ // ?
+ case 0x1046 : data = sec_2_read_1046(); break;
+ // ?
+ case 0x1048 : data = (sec_2_read_1048() << 0) + (sec_2_read_1049() << 8); break;
+ case 0x104A : data = (sec_2_read_104A() << 0) + (sec_2_read_104B() << 8); break;
+ case 0x104C : data = (sec_2_read_104C() << 0) + (sec_2_read_104D() << 8); break;
+ case 0x104E : data = (sec_2_read_104E() << 0) + (sec_2_read_104F() << 8); break;
+ // ?
+ case 0x1074 : data = sec_2_read_1074(); break;
+ }
+ verboselog( machine(), 9, "(DOC) %08X -> %04X\n", 0x1000 + offset, data);
+ return data;
+}
+
+UINT8 diskonchip_g3_device::sec_2_read8(UINT32 offset)
+{
+ UINT8 data = m_sec_2[offset];
+ switch (0x1000 + offset)
+ {
+ // ?
+ case 0x100E : data = sec_2_read_100E(); break;
+ // ?
+ case 0x1014 : data = sec_2_read_1014(); break;
+ // ?
+ case 0x1022 : data = sec_2_read_1022(); break;
+ // flash control
+ case 0x1038 : data = sec_2_read_1038(); break;
+ // flash ?
+ case 0x1042 : data = sec_2_read_1042(); break;
+ // ?
+ case 0x1046 : data = sec_2_read_1046(); break;
+ // ?
+ case 0x1048 : data = sec_2_read_1048(); break;
+ case 0x1049 : data = sec_2_read_1049(); break;
+ case 0x104A : data = sec_2_read_104A(); break;
+ case 0x104B : data = sec_2_read_104B(); break;
+ case 0x104C : data = sec_2_read_104C(); break;
+ case 0x104D : data = sec_2_read_104D(); break;
+ case 0x104E : data = sec_2_read_104E(); break;
+ case 0x104F : data = sec_2_read_104F(); break;
+ }
+ verboselog( machine(), 9, "(DOC) %08X -> %02X\n", 0x1000 + offset, data);
+ return data;
+}
+
+void diskonchip_g3_device::sec_2_write_100C(UINT8 data)
+{
+ const char *mode_name[] = { "reset", "normal", "deep power down" };
+ UINT32 mode = data & 3;
+ verboselog( machine(), 5, "mode %d (%s)\n", mode, mode_name[mode]);
+ if (mode == 0)
+ {
+ m_sec_2[0x04] = 00;
+ }
+}
+
+void diskonchip_g3_device::sec_2_write_1032(UINT8 data)
+{
+ verboselog( machine(), 5, "flash select %02X\n", data);
+ if ((data == 0x12) || (data == 0x27))
+ {
+ m_transfer_offset = 0;
+ m_plane = 0;
+ m_block = 0;
+ m_page = 0;
+ }
+}
+
+void diskonchip_g3_device::g3_erase_block()
+{
+ UINT32 offset;
+ int i, j;
+ const UINT8 xxx[] = { 0x00, 0x00, 0x87, 0x00, 0x00, 0x00, 0xCE, 0x00, 0xCF, 0x72, 0xFC, 0x1B, 0xA9, 0xC7, 0xB9, 0x00 };
+ verboselog( machine(), 5, "erase block %04X\n", m_block);
+ for (i=0;i<m_pages;i++)
+ {
+ m_page = i;
+ for (j=0;j<2;j++)
+ {
+ m_plane = j;
+ offset = g3_offset_data_1();
+ memset( m_data[0] + offset, 0xFF, (m_user_data_size + m_extra_area_size));
+ offset = g3_offset_data_2();
+ memcpy( m_data[1] + offset, xxx, 16);
+ }
+ }
+}
+
+// 'maincpu' (028848E4): diskonchip_sec_2_write_1034: unknown value 60/27
+// 'maincpu' (028848E4): diskonchip_sec_2_write_1034: unknown value D0/27
+// 'maincpu' (028848E4): diskonchip_sec_2_write_1034: unknown value 71/31
+// 'maincpu' (028848E4): diskonchip_sec_2_write_1034: unknown value 80/1D
+// 'maincpu' (028848E4): diskonchip_sec_2_write_1034: unknown value 11/1D
+// 'maincpu' (028848E4): diskonchip_sec_2_write_1034: unknown value 10/1D
+
+void diskonchip_g3_device::sec_2_write_1034(UINT8 data)
+{
+ verboselog( machine(), 5, "flash command %02X\n", data);
+ if ((m_sec_2[0x32] == 0x0E) && (data == 0x00))
+ {
+ m_test = 0;
+ m_address_count = 0;
+ }
+ else if ((m_sec_2[0x32] == 0x10) && (data == 0x50))
+ {
+ m_test = 1;
+ m_address_count = 0;
+ }
+ else if ((m_sec_2[0x32] == 0x03) && (data == 0x3C))
+ {
+ // do nothing
+ }
+ else if ((m_sec_2[0x32] == 0x00) && (data == 0xFF))
+ {
+ m_address_count = 0;
+ }
+ else if (m_sec_2[0x32] == 0x09)
+ {
+ if (data == 0x22)
+ {
+ // do nothing
+ }
+ else if (data == 0xA2)
+ {
+ // do nothing
+ }
+ else
+ {
+ verboselog( machine(), 0, "diskonchip_sec_2_write_1034: unknown value %02X/%02X\n", data, m_sec_2[0x32]);
+ }
+ }
+ else if (m_sec_2[0x32] == 0x12)
+ {
+ if (data == 0x60)
+ {
+ m_data_1036 = 0;
+ m_data_1036_count = 0;
+ m_address_count++;
+ }
+ else if (data == 0x30)
+ {
+ // do nothing
+ }
+ else if (data == 0x05)
+ {
+ // do nothing
+ }
+ else if (data == 0xE0)
+ {
+ // do nothing
+ }
+ else
+ {
+ verboselog( machine(), 0, "diskonchip_sec_2_write_1034: unknown value %02X/%02X\n", data, m_sec_2[0x32]);
+ }
+ }
+ else if (m_sec_2[0x32] == 0x27)
+ {
+ if (data == 0x60)
+ {
+ m_data_1036 = 0;
+ m_data_1036_count = 0;
+ m_address_count++;
+ }
+ else if (data == 0xD0)
+ {
+ g3_erase_block();
+ }
+ else
+ {
+ verboselog( machine(), 0, "diskonchip_sec_2_write_1034: unknown value %02X/%02X\n", data, m_sec_2[0x32]);
+ }
+ }
+ else if ((m_sec_2[0x32] == 0x31) && (data == 0x71))
+ {
+ // erase block status? (after: read one byte from 08xx, bit 0/1/2 is checked)
+ m_test = 2;
+ }
+ else if (m_sec_2[0x32] == 0x1D)
+ {
+ if (data == 0x80)
+ {
+ m_data_1036 = 0;
+ m_data_1036_count = 0;
+ m_address_count++;
+ }
+ else if (data == 0x11)
+ {
+ m_test = 3;
+ }
+ else
+ {
+ verboselog( machine(), 0, "diskonchip_sec_2_write_1034: unknown value %02X/%02X\n", data, m_sec_2[0x32]);
+ }
+ }
+ else
+ {
+ verboselog( machine(), 0, "diskonchip_sec_2_write_1034: unknown value %02X/%02X\n", data, m_sec_2[0x32]);
+ }
+}
+
+void diskonchip_g3_device::sec_2_write_1036(UINT8 data)
+{
+ if (m_sec_2[0x34] == 0x60)
+ {
+ m_data_1036 |= data << (8 * m_data_1036_count++);
+ if (m_data_1036_count == 3)
+ {
+ UINT32 block, page, plane;
+ block = (m_data_1036 >> 7);
+ if (block >= m_blocks) fatalerror( "DOCG3: invalid block (%d)", block);
+ plane = (m_data_1036 >> 6) & 1;
+ page = (m_data_1036 >> 0) & 0x3F;
+ verboselog( machine(), 5, "flash address %d - %06X (plane %d block %04X page %04X)\n", m_address_count, m_data_1036, plane, block, page);
+ if (m_address_count == 1)
+ {
+ m_plane = 0;
+ m_block = block;
+ m_page = page;
+ }
+ }
+ }
+ else if (m_sec_2[0x34] == 0x80)
+ {
+ m_data_1036 |= data << (8 * m_data_1036_count++);
+ if (m_data_1036_count == 4)
+ {
+ UINT32 block, page, plane, unk;
+ block = (m_data_1036 >> 15);
+ plane = (m_data_1036 >> 14) & 1;
+ page = (m_data_1036 >> 8) & 0x3F;
+ unk = (m_data_1036 >> 0) & 0xFF;
+ verboselog( machine(), 5, "flash address %d - %08X (plane %d block %04X page %04X unk %02X)\n", m_address_count, m_data_1036, plane, block, page, unk);
+ if (m_address_count == 1)
+ {
+ m_plane = 0;
+ m_block = block;
+ m_page = page;
+ m_transfer_offset = 0;
+ }
+ }
+ }
+ else if (m_sec_2[0x34] == 0x05)
+ {
+ m_transfer_offset = data << 2;
+ verboselog( machine(), 5, "flash transfer offset %04X\n", m_transfer_offset);
+ }
+}
+
+void diskonchip_g3_device::sec_2_write_1040(UINT16 data)
+{
+ m_transfersize = (data & 0x3FF);
+ verboselog( machine(), 5, "flash transfer size %04X\n", m_transfersize);
+}
+
+void diskonchip_g3_device::sec_2_write_100A(UINT8 data)
+{
+ m_device = data & 3;
+ verboselog( machine(), 5, "select device %d\n", m_device);
+}
+
+void diskonchip_g3_device::sec_2_write16(UINT32 offset, UINT16 data)
+{
+ m_sec_2[offset+0] = (data >> 0) & 0xFF;
+ m_sec_2[offset+1] = (data >> 8) & 0xFF;
+ verboselog( machine(), 9, "(DOC) %08X <- %04X\n", 0x1000 + offset, data);
+ switch (0x1000 + offset)
+ {
+ // ?
+ case 0x100C : sec_2_write_100C(data); break;
+ // Device ID Select Register
+ case 0x100A : sec_2_write_100A(data); break;
+ // flash select
+ case 0x1032 : sec_2_write_1032(data); break;
+ // flash command
+ case 0x1034 : sec_2_write_1034(data); break;
+ // flash address
+ case 0x1036 : sec_2_write_1036(data); break;
+ // ?
+ case 0x1040 : sec_2_write_1040(data); break;
+ }
+}
+
+void diskonchip_g3_device::sec_2_write8(UINT32 offset, UINT8 data)
+{
+ m_sec_2[offset] = data;
+ verboselog( machine(), 9, "(DOC) %08X <- %02X\n", 0x1000 + offset, data);
+ switch (0x1000 + offset)
+ {
+ // ?
+ case 0x100C : sec_2_write_100C(data); break;
+ // Device ID Select Register
+ case 0x100A : sec_2_write_100A(data); break;
+ // flash select
+ case 0x1032 : sec_2_write_1032(data); break;
+ // flash command
+ case 0x1034 : sec_2_write_1034(data); break;
+ // flash address
+ case 0x1036 : sec_2_write_1036(data); break;
+ }
+}
+
+READ16_MEMBER( diskonchip_g3_device::sec_2_r )
+{
+ if (mem_mask == 0xffff)
+ {
+ return sec_2_read16(offset * 2);
+ }
+ else if (mem_mask == 0x00ff)
+ {
+ return sec_2_read8(offset * 2 + 0) << 0;
+ }
+ else if (mem_mask == 0xff00)
+ {
+ return sec_2_read8( offset * 2 + 1) << 8;
+ }
+ else
+ {
+ verboselog( machine(), 0, "diskonchip_g3_sec_2_r: unknown mem_mask %08X\n", mem_mask);
+ return 0;
+ }
+}
+
+WRITE16_MEMBER( diskonchip_g3_device::sec_2_w )
+{
+ if (mem_mask == 0xffff)
+ {
+ sec_2_write16(offset * 2, data);
+ }
+ else if (mem_mask == 0x00ff)
+ {
+ sec_2_write8(offset * 2 + 0, (data >> 0) & 0xFF);
+ }
+ else if (mem_mask == 0xff00)
+ {
+ sec_2_write8(offset * 2 + 1, (data >> 8) & 0xFF);
+ }
+ else
+ {
+ verboselog( machine(), 0, "diskonchip_g3_sec_2_w: unknown mem_mask %08X\n", mem_mask);
+ }
+}
+
+READ16_MEMBER( diskonchip_g3_device::sec_3_r )
+{
+ UINT16 data = 0;
+ verboselog( machine(), 9, "(DOC) %08X -> %04X\n", 0x1800 + (offset << 1), data);
+ return data;
+}
+
+WRITE16_MEMBER( diskonchip_g3_device::sec_3_w )
+{
+ verboselog( machine(), 9, "(DOC) %08X <- %02X\n", 0x1800 + (offset << 1), data);
+}
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+void diskonchip_g3_device::device_start()
+{
+ verboselog( machine(), 9, "(DOC) device start\n");
+
+ switch (m_size)
+ {
+ case 64 :
+ {
+ m_planes = 2;
+ m_blocks = 1024;
+ m_pages = 64;
+ m_user_data_size = 512;
+ m_extra_area_size = 16;
+ }
+ break;
+ }
+
+ m_data_size[0] = m_planes * m_blocks * m_pages * (m_user_data_size + m_extra_area_size);
+ m_data_size[1] = m_planes * m_blocks * m_pages * 16;
+ m_data_size[2] = m_blocks * 8;
+
+ m_data[0] = auto_alloc_array( machine(), UINT8, m_data_size[0]);
+ m_data[1] = auto_alloc_array( machine(), UINT8, m_data_size[1]);
+ m_data[2] = auto_alloc_array( machine(), UINT8, m_data_size[2]);
+
+// diskonchip_load( device, "diskonchip");
+
+ save_item( NAME(m_planes));
+ save_item( NAME(m_blocks));
+ save_item( NAME(m_pages));
+ save_item( NAME(m_user_data_size));
+ save_item( NAME(m_extra_area_size));
+ save_pointer( NAME(m_data[0]), m_data_size[0]);
+ save_pointer( NAME(m_data[1]), m_data_size[1]);
+ save_pointer( NAME(m_data[2]), m_data_size[2]);
+}
+
+//-------------------------------------------------
+// device_reset - device-specific reset
+//-------------------------------------------------
+
+void diskonchip_g3_device::device_reset()
+{
+ verboselog( machine(), 9, "(DOC) device reset\n");
+}
+
+//-------------------------------------------------
+// nvram_default - called to initialize NVRAM to
+// its default state
+//-------------------------------------------------
+
+void diskonchip_g3_device::nvram_default()
+{
+ memset(m_data[0], 0xFF, m_data_size[0]);
+ memset(m_data[1], 0x00, m_data_size[1]);
+ memset(m_data[2], 0xFF, m_data_size[2]);
+}
+
+//-------------------------------------------------
+// nvram_read - called to read NVRAM from the
+// .nv file
+//-------------------------------------------------
+
+void diskonchip_g3_device::nvram_read(emu_file &file)
+{
+ file.read(m_data[0], m_data_size[0]);
+ file.read(m_data[1], m_data_size[1]);
+ file.read(m_data[2], m_data_size[2]);
+}
+
+//-------------------------------------------------
+// nvram_write - called to write NVRAM to the
+// .nv file
+//-------------------------------------------------
+
+void diskonchip_g3_device::nvram_write(emu_file &file)
+{
+ file.write(m_data[0], m_data_size[0]);
+ file.write(m_data[1], m_data_size[1]);
+ file.write(m_data[2], m_data_size[2]);
+}