summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/drivers/ec184x.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/mame/drivers/ec184x.cpp')
-rw-r--r--src/mame/drivers/ec184x.cpp383
1 files changed, 383 insertions, 0 deletions
diff --git a/src/mame/drivers/ec184x.cpp b/src/mame/drivers/ec184x.cpp
new file mode 100644
index 00000000000..f85a1aa8219
--- /dev/null
+++ b/src/mame/drivers/ec184x.cpp
@@ -0,0 +1,383 @@
+// license:BSD-3-Clause
+// copyright-holders:Sergey Svishchev
+/***************************************************************************
+
+ drivers/ec184x.c
+
+ Driver file for EC-184x series
+
+***************************************************************************/
+
+
+#include "emu.h"
+
+#include "includes/genpc.h"
+
+#include "bus/isa/xsu_cards.h"
+#include "bus/pc_kbd/keyboards.h"
+#include "cpu/i86/i86.h"
+#include "machine/ram.h"
+#include "softlist.h"
+
+#define EC1841_MEMBOARD_SIZE (512*1024)
+
+#define VERBOSE_DBG 1 /* general debug messages */
+
+#define DBG_LOG(N,M,A) \
+ do { \
+ if(VERBOSE_DBG>=N) \
+ { \
+ if( M ) \
+ logerror("%11.6f at %s: %-24s",machine().time().as_double(),machine().describe_context(),(char*)M ); \
+ logerror A; \
+ } \
+ } while (0)
+
+
+
+class ec184x_state : public driver_device
+{
+public:
+ ec184x_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag) ,
+ m_maincpu(*this, "maincpu") { }
+
+ required_device<cpu_device> m_maincpu;
+
+ DECLARE_MACHINE_RESET(ec1841);
+ DECLARE_DRIVER_INIT(ec1841);
+
+ struct {
+ UINT8 enable[4];
+ int boards;
+ } m_memory;
+
+ DECLARE_READ8_MEMBER(memboard_r);
+ DECLARE_WRITE8_MEMBER(memboard_w);
+};
+
+/*
+ * EC-1841 memory controller. The machine can hold four memory boards;
+ * each board has a control register, its address is set by a DIP switch
+ * on the board itself.
+ *
+ * Only one board should be enabled for read, and one for write.
+ * Normally, this is the same board.
+ *
+ * Each board is divided into 4 banks, internally numbererd 0..3.
+ * POST tests each board on startup, and an error (indicated by
+ * I/O CH CK bus signal) causes it to disable failing bank(s) by writing
+ * 'reconfiguration code' (inverted number of failing memory bank) to
+ * the register.
+
+ * bit 1-0 'reconfiguration code'
+ * bit 2 enable read access
+ * bit 3 enable write access
+ */
+
+READ8_MEMBER(ec184x_state::memboard_r)
+{
+ UINT8 data;
+
+ data = offset % 4;
+ if (data >= m_memory.boards)
+ data = 0xff;
+ else
+ data = m_memory.enable[data];
+ DBG_LOG(1,"ec1841_memboard",("R (%d of %d) == %02X\n", offset+1, m_memory.boards, data ));
+
+ return data;
+}
+
+WRITE8_MEMBER(ec184x_state::memboard_w)
+{
+ address_space &program = m_maincpu->space(AS_PROGRAM);
+ ram_device *m_ram = machine().device<ram_device>(RAM_TAG);
+ UINT8 current;
+
+ current = m_memory.enable[offset];
+
+ DBG_LOG(1,"ec1841_memboard",("W (%d of %d) <- %02X (%02X)\n", offset+1, m_memory.boards, data, current));
+
+ if (offset >= m_memory.boards) {
+ return;
+ }
+
+ if (BIT(current, 2) && !BIT(data, 2)) {
+ // disable read access
+ program.unmap_read(0, EC1841_MEMBOARD_SIZE-1);
+ DBG_LOG(1,"ec1841_memboard_w",("unmap_read(%d)\n", offset));
+ }
+
+ if (BIT(current, 3) && !BIT(data, 3)) {
+ // disable write access
+ program.unmap_write(0, EC1841_MEMBOARD_SIZE-1);
+ DBG_LOG(1,"ec1841_memboard_w",("unmap_write(%d)\n", offset));
+ }
+
+ if (!BIT(current, 2) && BIT(data, 2)) {
+ for(int i=0; i<4; i++)
+ m_memory.enable[i] &= 0xfb;
+ // enable read access
+ membank("bank10")->set_base(m_ram->pointer() + offset*EC1841_MEMBOARD_SIZE);
+ program.install_read_bank(0, EC1841_MEMBOARD_SIZE-1, "bank10");
+ DBG_LOG(1,"ec1841_memboard_w",("map_read(%d)\n", offset));
+ }
+
+ if (!BIT(current, 3) && BIT(data, 3)) {
+ for(int i=0; i<4; i++)
+ m_memory.enable[i] &= 0xf7;
+ // enable write access
+ membank("bank20")->set_base(m_ram->pointer() + offset*EC1841_MEMBOARD_SIZE);
+ program.install_write_bank(0, EC1841_MEMBOARD_SIZE-1, "bank20");
+ DBG_LOG(1,"ec1841_memboard_w",("map_write(%d)\n", offset));
+ }
+
+ m_memory.enable[offset] = data;
+}
+
+DRIVER_INIT_MEMBER( ec184x_state, ec1841 )
+{
+ address_space &program = m_maincpu->space(AS_PROGRAM);
+ ram_device *m_ram = machine().device<ram_device>(RAM_TAG);
+
+ m_memory.boards = m_ram->size()/EC1841_MEMBOARD_SIZE;
+ if (m_memory.boards > 4)
+ m_memory.boards = 4;
+
+ // 640K configuration is special -- 512K board mapped at 0 + 128K board mapped at 512K
+ // XXX verify this was actually the case
+ if (m_ram->size() == 640*1024) {
+ program.install_read_bank(0, m_ram->size()-1, "bank10");
+ program.install_write_bank(0, m_ram->size()-1, "bank20");
+ } else {
+ program.install_read_bank(0, EC1841_MEMBOARD_SIZE-1, "bank10");
+ program.install_write_bank(0, EC1841_MEMBOARD_SIZE-1, "bank20");
+ }
+ membank( "bank10" )->set_base( m_ram->pointer() );
+ membank( "bank20" )->set_base( m_ram->pointer() );
+}
+
+MACHINE_RESET_MEMBER( ec184x_state, ec1841 )
+{
+ memset(m_memory.enable, 0, sizeof(m_memory.enable));
+ // mark 1st board enabled
+ m_memory.enable[0] = 0xc;
+}
+
+
+static ADDRESS_MAP_START( ec1840_map, AS_PROGRAM, 8, ec184x_state )
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0x00000, 0x7ffff) AM_RAM
+ AM_RANGE(0xa0000, 0xbffff) AM_NOP
+ AM_RANGE(0xc0000, 0xc7fff) AM_ROM
+ AM_RANGE(0xc8000, 0xcffff) AM_ROM
+ AM_RANGE(0xdc000, 0xdffff) AM_RAM
+ AM_RANGE(0xf0000, 0xfffff) AM_ROM
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( ec1841_map, AS_PROGRAM, 16, ec184x_state )
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0x00000, 0x7ffff) AM_RAM
+ AM_RANGE(0xa0000, 0xbffff) AM_NOP
+ AM_RANGE(0xc0000, 0xc7fff) AM_ROM
+ AM_RANGE(0xc8000, 0xcffff) AM_ROM
+ AM_RANGE(0xf0000, 0xfffff) AM_ROM
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( ec1847_map, AS_PROGRAM, 8, ec184x_state )
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0x00000, 0x9ffff) AM_RAMBANK("bank10")
+ AM_RANGE(0xa0000, 0xbffff) AM_NOP
+ AM_RANGE(0xc0000, 0xc7fff) AM_ROM
+ AM_RANGE(0xc8000, 0xcffff) AM_ROM
+ AM_RANGE(0xdc000, 0xdffff) AM_RAM
+ AM_RANGE(0xf0000, 0xfffff) AM_ROM
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( ec1840_io, AS_IO, 8, ec184x_state )
+ ADDRESS_MAP_UNMAP_HIGH
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( ec1841_io, AS_IO, 16, ec184x_state )
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0x02b0, 0x02b3) AM_READWRITE8(memboard_r, memboard_w, 0xffff);
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( ec1847_io, AS_IO, 8, ec184x_state )
+ ADDRESS_MAP_UNMAP_HIGH
+// AM_RANGE(0x0210, 0x021f) AM_RAM // internal (non-standard?) bus extender
+ADDRESS_MAP_END
+
+
+static INPUT_PORTS_START( ec1841 )
+INPUT_PORTS_END
+
+static DEVICE_INPUT_DEFAULTS_START( ec1840 )
+ DEVICE_INPUT_DEFAULTS("DSW0", 0x31, 0x21)
+DEVICE_INPUT_DEFAULTS_END
+
+static DEVICE_INPUT_DEFAULTS_START( ec1841 )
+ DEVICE_INPUT_DEFAULTS("DSW0", 0x31, 0x21)
+DEVICE_INPUT_DEFAULTS_END
+
+static DEVICE_INPUT_DEFAULTS_START( ec1847 )
+ DEVICE_INPUT_DEFAULTS("DSW0", 0x31, 0x31)
+DEVICE_INPUT_DEFAULTS_END
+
+// XXX verify everything
+static MACHINE_CONFIG_START( ec1840, ec184x_state )
+ MCFG_CPU_ADD("maincpu", I8088, 4096000)
+ MCFG_CPU_PROGRAM_MAP(ec1840_map)
+ MCFG_CPU_IO_MAP(ec1840_io)
+ MCFG_CPU_IRQ_ACKNOWLEDGE_DEVICE("mb:pic8259", pic8259_device, inta_cb)
+
+ MCFG_IBM5150_MOTHERBOARD_ADD("mb","maincpu")
+ MCFG_DEVICE_INPUT_DEFAULTS(ec1840)
+
+ MCFG_ISA8_SLOT_ADD("mb:isa", "isa1", ec184x_isa8_cards, "ec1840.0002", false)
+ MCFG_ISA8_SLOT_ADD("mb:isa", "isa2", ec184x_isa8_cards, "ec1841.0003", false) // actually ec1840.0003 -- w/o mouse port
+ MCFG_ISA8_SLOT_ADD("mb:isa", "isa3", ec184x_isa8_cards, NULL, false)
+ MCFG_ISA8_SLOT_ADD("mb:isa", "isa4", ec184x_isa8_cards, NULL, false)
+ MCFG_ISA8_SLOT_ADD("mb:isa", "isa5", ec184x_isa8_cards, NULL, false)
+ MCFG_ISA8_SLOT_ADD("mb:isa", "isa6", ec184x_isa8_cards, NULL, false)
+
+ MCFG_SOFTWARE_LIST_ADD("flop_list","ec1841")
+
+ MCFG_PC_KBDC_SLOT_ADD("mb:pc_kbdc", "kbd", pc_xt_keyboards, STR_KBD_EC_1841)
+
+ MCFG_RAM_ADD(RAM_TAG)
+ MCFG_RAM_DEFAULT_SIZE("512K")
+MACHINE_CONFIG_END
+
+static MACHINE_CONFIG_START( ec1841, ec184x_state )
+ MCFG_CPU_ADD("maincpu", I8086, 4096000)
+ MCFG_CPU_PROGRAM_MAP(ec1841_map)
+ MCFG_CPU_IO_MAP(ec1841_io)
+ MCFG_CPU_IRQ_ACKNOWLEDGE_DEVICE("mb:pic8259", pic8259_device, inta_cb)
+
+ MCFG_MACHINE_RESET_OVERRIDE(ec184x_state, ec1841)
+
+ MCFG_EC1841_MOTHERBOARD_ADD("mb", "maincpu")
+ MCFG_DEVICE_INPUT_DEFAULTS(ec1841)
+
+ MCFG_ISA8_SLOT_ADD("mb:isa", "isa1", ec184x_isa8_cards, "ec1841.0002", false) // cga
+ MCFG_ISA8_SLOT_ADD("mb:isa", "isa2", ec184x_isa8_cards, "ec1841.0003", false) // fdc + mouse port
+ MCFG_ISA8_SLOT_ADD("mb:isa", "isa3", ec184x_isa8_cards, "hdc", false)
+ MCFG_ISA8_SLOT_ADD("mb:isa", "isa4", ec184x_isa8_cards, NULL, false)
+ MCFG_ISA8_SLOT_ADD("mb:isa", "isa5", ec184x_isa8_cards, NULL, false)
+ MCFG_ISA8_SLOT_ADD("mb:isa", "isa6", ec184x_isa8_cards, NULL, false)
+
+ MCFG_SOFTWARE_LIST_ADD("flop_list","ec1841")
+
+ MCFG_PC_KBDC_SLOT_ADD("mb:pc_kbdc", "kbd", pc_xt_keyboards, STR_KBD_EC_1841)
+
+ MCFG_RAM_ADD(RAM_TAG)
+ MCFG_RAM_DEFAULT_SIZE("640K")
+ MCFG_RAM_EXTRA_OPTIONS("512K,1024K,1576K,2048K")
+MACHINE_CONFIG_END
+
+// XXX verify everything
+static MACHINE_CONFIG_START( ec1847, ec184x_state )
+ MCFG_CPU_ADD("maincpu", I8088, 4772720)
+ MCFG_CPU_PROGRAM_MAP(ec1847_map)
+ MCFG_CPU_IO_MAP(ec1847_io)
+ MCFG_CPU_IRQ_ACKNOWLEDGE_DEVICE("mb:pic8259", pic8259_device, inta_cb)
+
+ MCFG_IBM5160_MOTHERBOARD_ADD("mb","maincpu")
+ MCFG_DEVICE_INPUT_DEFAULTS(ec1847)
+
+ MCFG_ISA8_SLOT_ADD("mb:isa", "isa1", pc_isa8_cards, "hercules", false) // cga, ega and vga(?) are options too
+ MCFG_ISA8_SLOT_ADD("mb:isa", "isa2", pc_isa8_cards, "fdc_xt", false)
+ MCFG_ISA8_SLOT_ADD("mb:isa", "isa3", pc_isa8_cards, NULL, false) // native variant (wd1010 + z80) not emulated
+ MCFG_ISA8_SLOT_ADD("mb:isa", "isa4", pc_isa8_cards, NULL, false) // native serial (2x8251) not emulated
+ MCFG_ISA8_SLOT_ADD("mb:isa", "isa5", pc_isa8_cards, NULL, false)
+ MCFG_ISA8_SLOT_ADD("mb:isa", "isa6", pc_isa8_cards, NULL, false)
+
+ MCFG_PC_KBDC_SLOT_ADD("mb:pc_kbdc", "kbd", pc_xt_keyboards, STR_KBD_KEYTRONIC_PC3270)
+
+ MCFG_RAM_ADD(RAM_TAG)
+ MCFG_RAM_DEFAULT_SIZE("640K")
+MACHINE_CONFIG_END
+
+ROM_START( ec1840 )
+ ROM_REGION16_LE(0x100000,"maincpu", 0)
+ ROM_DEFAULT_BIOS("v4")
+ // supports MDA only
+ ROM_SYSTEM_BIOS(0, "v1", "EC-1840.01")
+ ROMX_LOAD( "000-01.bin", 0xfe000, 0x0800, CRC(c3ab1fad) SHA1(8168bdee30698f4f9aa7bbb6dfabe62dd723cec5), ROM_SKIP(1) | ROM_BIOS(1))
+ ROMX_LOAD( "001-01.bin", 0xff000, 0x0800, CRC(601d1155) SHA1(9684d33b92743749704587a48e679ef7a3b20f9c), ROM_SKIP(1) | ROM_BIOS(1))
+ ROMX_LOAD( "002-01.bin", 0xfe001, 0x0800, CRC(ce4dddb7) SHA1(f9b1da60c848e68ff1c154d695a36a0833de4804), ROM_SKIP(1) | ROM_BIOS(1))
+ ROMX_LOAD( "003-01.bin", 0xff001, 0x0800, CRC(14b40431) SHA1(ce7fffa41897405ee64fd4e86015e774f8bd108a), ROM_SKIP(1) | ROM_BIOS(1))
+
+ ROM_SYSTEM_BIOS(1, "v4", "EC-1840.04")
+ ROMX_LOAD( "000-04-971b.bin", 0xfe000, 0x0800, CRC(06aeaee8) SHA1(9f954e4c48156d573a8e0109e7ca652be9e6036a), ROM_SKIP(1) | ROM_BIOS(2))
+ ROMX_LOAD( "001-04-92b7.bin", 0xff000, 0x0800, CRC(3fae650a) SHA1(c98b777fdeceadd72d6eb9465b3501b9ead55a08), ROM_SKIP(1) | ROM_BIOS(2))
+ ROMX_LOAD( "002-04-9e17.bin", 0xfe001, 0x0800, CRC(d59712df) SHA1(02ea1b3ae9662f5c64c58920a32ca9db0f6fbd12), ROM_SKIP(1) | ROM_BIOS(2))
+ ROMX_LOAD( "003-04-3ccb.bin", 0xff001, 0x0800, CRC(7fc362c7) SHA1(538e13639ad2b4c30bd72582e323181e63513306), ROM_SKIP(1) | ROM_BIOS(2))
+
+ ROM_REGION(0x2000,"gfx1", ROMREGION_ERASE00)
+ROM_END
+
+ROM_START( ec1841 )
+ ROM_REGION16_LE(0x100000,"maincpu", 0)
+ ROM_DEFAULT_BIOS("v2")
+ ROM_SYSTEM_BIOS(0, "v1", "EC-1841.01")
+ ROMX_LOAD( "012-01-3107.bin", 0xfc000, 0x0800, CRC(77957396) SHA1(785f1dceb6e2b4618f5c5f0af15eb74a8c951448), ROM_SKIP(1) | ROM_BIOS(1))
+ ROMX_LOAD( "013-01-203f.bin", 0xfc001, 0x0800, CRC(768bd3d5) SHA1(2e948f2ad262de306d889b7964c3f1aad45ff5bc), ROM_SKIP(1) | ROM_BIOS(1))
+ ROMX_LOAD( "014-01-fa40.bin", 0xfd000, 0x0800, CRC(47722b58) SHA1(a6339ee8af516f834826b7828a5cf79cb650480c), ROM_SKIP(1) | ROM_BIOS(1))
+ ROMX_LOAD( "015-01-bf1d.bin", 0xfd001, 0x0800, CRC(b585b5ea) SHA1(d0ebed586eb13031477c2e071c50416682f80489), ROM_SKIP(1) | ROM_BIOS(1))
+ ROMX_LOAD( "016-01-65f7.bin", 0xfe000, 0x0800, CRC(28a07db4) SHA1(17fbcd60dacd1d3f8d8355db429f97e4d1d1ac88), ROM_SKIP(1) | ROM_BIOS(1))
+ ROMX_LOAD( "017-01-5be1.bin", 0xfe001, 0x0800, CRC(928bda26) SHA1(ee889184067e2680b29a8ef1c3a76cf5afd4c78d), ROM_SKIP(1) | ROM_BIOS(1))
+ ROMX_LOAD( "018-01-7090.bin", 0xff000, 0x0800, CRC(75ca7d7e) SHA1(6356426820c5326a7893a437d54b02f250ef8609), ROM_SKIP(1) | ROM_BIOS(1))
+ ROMX_LOAD( "019-01-0492.bin", 0xff001, 0x0800, CRC(8a9d593e) SHA1(f3936d2cb4e6d130dd732973f126c3aa20612463), ROM_SKIP(1) | ROM_BIOS(1))
+
+ ROM_SYSTEM_BIOS(1, "v2", "EC-1841.02")
+ ROMX_LOAD( "012-02-37f6.bin", 0xfc000, 0x0800, CRC(8f5c6a20) SHA1(874b62f9cee8d3b974f33732f94eff10fc002c44), ROM_SKIP(1) | ROM_BIOS(2))
+ ROMX_LOAD( "013-02-2552.bin", 0xfc001, 0x0800, CRC(e3c10128) SHA1(d6ed743ebe9c130925c9f17aad1a45db9194c967), ROM_SKIP(1) | ROM_BIOS(2))
+ ROMX_LOAD( "014-02-0fbe.bin", 0xfd000, 0x0800, CRC(f8517e5e) SHA1(8034cd6ff5778365dc9daa494524f1753a74f1ed), ROM_SKIP(1) | ROM_BIOS(2))
+ ROMX_LOAD( "015-02-d736.bin", 0xfd001, 0x0800, CRC(8538c52a) SHA1(ee981ce90870b6546a18f2a2e64d71b0038ce0dd), ROM_SKIP(1) | ROM_BIOS(2))
+ ROMX_LOAD( "016-02-5b2c.bin", 0xfe000, 0x0800, CRC(3d1d1e67) SHA1(c527e29796537787c0f6c329f3c203f6131ca77f), ROM_SKIP(1) | ROM_BIOS(2))
+ ROMX_LOAD( "017-02-4b9d.bin", 0xfe001, 0x0800, CRC(1b985264) SHA1(5ddcb9c13564be208c5068c105444a87159c67ee), ROM_SKIP(1) | ROM_BIOS(2))
+ ROMX_LOAD( "018-02-7090.bin", 0xff000, 0x0800, CRC(75ca7d7e) SHA1(6356426820c5326a7893a437d54b02f250ef8609), ROM_SKIP(1) | ROM_BIOS(2))
+ ROMX_LOAD( "019-02-0493.bin", 0xff001, 0x0800, CRC(61aae23d) SHA1(7b3aa24a63ee31b194297eb1e61c3827edfcb95a), ROM_SKIP(1) | ROM_BIOS(2))
+
+ ROM_SYSTEM_BIOS(2, "v3", "EC-1841.03")
+ ROMX_LOAD( "012-03-37e7.bin", 0xfc000, 0x0800, CRC(49992bd5) SHA1(119121e1b4af1c44b9b8c2edabe7dc1d3019c4a6), ROM_SKIP(1) | ROM_BIOS(3))
+ ROMX_LOAD( "013-03-2554.bin", 0xfc001, 0x0800, CRC(834bd7d7) SHA1(e37514fc4cb8a5cbe68e7564e0e07d5116c4021a), ROM_SKIP(1) | ROM_BIOS(3))
+ ROMX_LOAD( "014-03-0fbe.bin", 0xfd000, 0x0800, CRC(f8517e5e) SHA1(8034cd6ff5778365dc9daa494524f1753a74f1ed), ROM_SKIP(1) | ROM_BIOS(3))
+ ROMX_LOAD( "015-03-d736.bin", 0xfd001, 0x0800, CRC(8538c52a) SHA1(ee981ce90870b6546a18f2a2e64d71b0038ce0dd), ROM_SKIP(1) | ROM_BIOS(3))
+ ROMX_LOAD( "016-03-5b2c.bin", 0xfe000, 0x0800, CRC(3d1d1e67) SHA1(c527e29796537787c0f6c329f3c203f6131ca77f), ROM_SKIP(1) | ROM_BIOS(3))
+ ROMX_LOAD( "017-03-4b9d.bin", 0xfe001, 0x0800, CRC(1b985264) SHA1(5ddcb9c13564be208c5068c105444a87159c67ee), ROM_SKIP(1) | ROM_BIOS(3))
+ ROMX_LOAD( "018-03-7090.bin", 0xff000, 0x0800, CRC(75ca7d7e) SHA1(6356426820c5326a7893a437d54b02f250ef8609), ROM_SKIP(1) | ROM_BIOS(3))
+ ROMX_LOAD( "019-03-0493.bin", 0xff001, 0x0800, CRC(61aae23d) SHA1(7b3aa24a63ee31b194297eb1e61c3827edfcb95a), ROM_SKIP(1) | ROM_BIOS(3))
+ROM_END
+
+ROM_START( ec1845 )
+ ROM_REGION16_LE(0x100000,"maincpu", 0)
+ ROMX_LOAD( "184500.bin", 0xfc000, 0x0800, CRC(7c472ef7) SHA1(3af53f27b49bbc731bf51f9300fbada23a1bfcfc), ROM_SKIP(1))
+ ROMX_LOAD( "184501.bin", 0xfc001, 0x0800, CRC(db240dc6) SHA1(d7bb022213d09bbf2a8107fe4f1cd27b23939e18), ROM_SKIP(1))
+ ROMX_LOAD( "184502.bin", 0xfd000, 0x0800, CRC(149e7e29) SHA1(7f2a297588fef1bc750c57e6ae0d5acf3d27c486), ROM_SKIP(1))
+ ROMX_LOAD( "184503.bin", 0xfd001, 0x0800, CRC(e28cbd74) SHA1(cf1fba4e67c8e1dd8cdda547118e84b704029b03), ROM_SKIP(1))
+ ROMX_LOAD( "184504.bin", 0xfe000, 0x0800, CRC(55fa7a1d) SHA1(58f7abab08b9d2f0a1c1636e11bb72af2694c95f), ROM_SKIP(1))
+ ROMX_LOAD( "184505.bin", 0xfe001, 0x0800, CRC(c807e3f5) SHA1(08117e449f0d04f96041cff8d34893f500f3760d), ROM_SKIP(1))
+ ROMX_LOAD( "184506.bin", 0xff000, 0x0800, CRC(24f5c27c) SHA1(7822dd7f715ef00ccf6d8408be8bbfe01c2eba20), ROM_SKIP(1))
+ ROMX_LOAD( "184507.bin", 0xff001, 0x0800, CRC(75122203) SHA1(7b0fbdf1315230633e39574ac7360163bc7361e1), ROM_SKIP(1))
+ROM_END
+
+ROM_START( ec1847 )
+ ROM_REGION16_LE(0x100000,"maincpu", 0)
+ ROM_SYSTEM_BIOS(0, "vXXX", "EC-1847.0x")
+ ROMX_LOAD( "308_d47_2764.bin", 0xc8000, 0x2000, CRC(f06924f2) SHA1(83a5dedf1c06f875c598f087bbc087524bc9bfa3), ROM_BIOS(1))
+ ROMX_LOAD( "188m_d47_2764.bin", 0xf4000, 0x2000, CRC(bc8742c7) SHA1(3af09d14e891e976b7a9a2a6e1af63f0eabe5426), ROM_BIOS(1))
+ ROMX_LOAD( "188m_d48_2764.bin", 0xfe000, 0x2000, CRC(7d290e95) SHA1(e73e6c8e19477fce5de3f95b89693dc6ad6781ab), ROM_BIOS(1))
+
+ ROM_REGION(0x2000,"gfx1", ROMREGION_ERASE00)
+ ROM_LOAD( "317_d28_2732.bin", 0x00000, 0x1000, CRC(8939599b) SHA1(53d02460cf93596882a96758ef4bac5fa1ce55b2)) // monochrome font
+ROM_END
+
+/* YEAR ROM NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME */
+COMP ( 1987, ec1840, ibm5150, 0, ec1840, ec1841, driver_device, 0, "<unknown>", "EC-1840", MACHINE_NOT_WORKING)
+COMP ( 1987, ec1841, ibm5150, 0, ec1841, ec1841, ec184x_state, ec1841, "<unknown>", "EC-1841", 0)
+COMP ( 1989, ec1845, ibm5150, 0, ec1841, ec1841, ec184x_state, ec1841, "<unknown>", "EC-1845", MACHINE_NOT_WORKING)
+COMP ( 1990, ec1847, ibm5150, 0, ec1847, ec1841, driver_device, 0, "<unknown>", "EC-1847", MACHINE_NOT_WORKING)