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diff --git a/src/mame/drivers/mbc200.c b/src/mame/drivers/mbc200.c
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+// license:BSD-3-Clause
+// copyright-holders:Miodrag Milanovic
+/***************************************************************************
+
+ Sanyo MBC-200
+
+ Machine MBC-1200 is identical but sold outside of Japan
+
+ 16 x HM6116P-3 2K x 8 SRAM soldered onboard (so 32k ram)
+ 4 x HM6116P-3 2K x 8 SRAM socketed (so 8k ram)
+ 4 x MB83256 32K x 8 socketed (128k ram)
+ Floppy = 5.25"
+ MBC1200 has one floppy while MBC1250 has 2. The systems
+ are otherwise identical.
+
+ On back side:
+ - keyboard DIN connector
+ - Centronics printer port
+ - RS-232C 25pin connector
+
+ TODO:
+ - Keyboard
+ - Sound
+ - CP/M display (it runs into the weeds internally)
+ - Other connections to the various PPI's
+ - UART connections
+ - Any other devices?
+
+ 2011-10-31 Skeleton driver.
+ 2014-05-18 Made rom get copied into ram, boot code from disk
+ requires that ram is there otherwise you get
+ a MEMORY ERROR. Now, CP/M loads and is executed, but
+ nothing shows on the screen.
+ Tried new wdc code, but the disk couldn't be read at all.
+
+
+****************************************************************************/
+
+#include "emu.h"
+#include "cpu/z80/z80.h"
+#include "machine/i8255.h"
+#include "machine/i8251.h"
+#include "video/mc6845.h"
+#include "machine/wd_fdc.h"
+
+
+class mbc200_state : public driver_device
+{
+public:
+ mbc200_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag)
+ , m_palette(*this, "palette")
+ , m_crtc(*this, "crtc")
+ , m_ppi_m(*this, "ppi_m")
+ , m_vram(*this, "vram")
+ , m_maincpu(*this, "maincpu")
+ , m_fdc(*this, "fdc")
+ , m_floppy0(*this, "fdc:0")
+ , m_floppy1(*this, "fdc:1")
+ { }
+
+ DECLARE_READ8_MEMBER(p2_porta_r);
+ DECLARE_WRITE8_MEMBER(pm_porta_w);
+ DECLARE_WRITE8_MEMBER(pm_portb_w);
+ MC6845_UPDATE_ROW(update_row);
+ required_device<palette_device> m_palette;
+
+private:
+ virtual void machine_start();
+ virtual void machine_reset();
+ UINT8 m_comm_latch;
+ required_device<mc6845_device> m_crtc;
+ required_device<i8255_device> m_ppi_m;
+ required_shared_ptr<UINT8> m_vram;
+ required_device<cpu_device> m_maincpu;
+ required_device<mb8876_t> m_fdc;
+ required_device<floppy_connector> m_floppy0;
+ required_device<floppy_connector> m_floppy1;
+};
+
+
+static ADDRESS_MAP_START(mbc200_mem, AS_PROGRAM, 8, mbc200_state)
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE( 0x0000, 0x0fff ) AM_RAM AM_REGION("maincpu", 0)
+ AM_RANGE( 0x1000, 0xffff ) AM_RAM
+ADDRESS_MAP_END
+
+WRITE8_MEMBER( mbc200_state::pm_porta_w )
+{
+ machine().scheduler().synchronize(); // force resync
+ printf("A %02x %c\n",data,data);
+ m_comm_latch = data; // to slave CPU
+}
+
+WRITE8_MEMBER( mbc200_state::pm_portb_w )
+{
+ floppy_image_device *floppy = NULL;
+
+ // to be verified
+ switch (data & 0x01)
+ {
+ case 0: floppy = m_floppy0->get_device(); break;
+ case 1: floppy = m_floppy1->get_device(); break;
+ }
+
+ m_fdc->set_floppy(floppy);
+
+ if (floppy)
+ {
+ floppy->mon_w(0);
+ floppy->ss_w(BIT(data, 7));
+ }
+}
+
+static ADDRESS_MAP_START( mbc200_io , AS_IO, 8, mbc200_state)
+ ADDRESS_MAP_UNMAP_HIGH
+ ADDRESS_MAP_GLOBAL_MASK(0xff)
+ AM_RANGE(0xe0, 0xe0) AM_DEVREADWRITE("i8251_1", i8251_device, data_r, data_w)
+ AM_RANGE(0xe1, 0xe1) AM_DEVREADWRITE("i8251_1", i8251_device, status_r, control_w)
+ AM_RANGE(0xe4, 0xe7) AM_DEVREADWRITE("fdc", mb8876_t, read, write)
+ AM_RANGE(0xe8, 0xeb) AM_DEVREADWRITE("ppi_m", i8255_device, read, write)
+ AM_RANGE(0xec, 0xec) AM_DEVREADWRITE("i8251_2", i8251_device, data_r, data_w)
+ AM_RANGE(0xed, 0xed) AM_DEVREADWRITE("i8251_2", i8251_device, status_r, control_w)
+ADDRESS_MAP_END
+
+
+
+static ADDRESS_MAP_START(mbc200_sub_mem, AS_PROGRAM, 8, mbc200_state)
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE( 0x0000, 0x2fff ) AM_ROM
+ AM_RANGE( 0x3000, 0x7fff ) AM_RAM
+ AM_RANGE( 0x8000, 0xffff ) AM_RAM AM_SHARE("vram")
+ADDRESS_MAP_END
+
+READ8_MEMBER(mbc200_state::p2_porta_r)
+{
+ machine().scheduler().synchronize(); // force resync
+ UINT8 tmp = m_comm_latch;
+ m_comm_latch = 0;
+ m_ppi_m->pc6_w(0); // ppi_ack
+ return tmp;
+}
+
+static ADDRESS_MAP_START( mbc200_sub_io , AS_IO, 8, mbc200_state)
+ ADDRESS_MAP_UNMAP_HIGH
+ ADDRESS_MAP_GLOBAL_MASK(0xff)
+ AM_RANGE(0x70, 0x73) AM_DEVREADWRITE("ppi_1", i8255_device, read, write)
+ AM_RANGE(0xb0, 0xb0) AM_DEVREADWRITE("crtc", mc6845_device, status_r, address_w)
+ AM_RANGE(0xb1, 0xb1) AM_DEVREADWRITE("crtc", mc6845_device, register_r, register_w)
+ AM_RANGE(0xd0, 0xd3) AM_DEVREADWRITE("ppi_2", i8255_device, read, write)
+ADDRESS_MAP_END
+
+/* Input ports */
+static INPUT_PORTS_START( mbc200 )
+INPUT_PORTS_END
+
+void mbc200_state::machine_start()
+{
+}
+
+void mbc200_state::machine_reset()
+{
+ UINT8* roms = memregion("roms")->base();
+ UINT8* main = memregion("maincpu")->base();
+ memcpy(main, roms, 0x1000);
+}
+
+static SLOT_INTERFACE_START( mbc200_floppies )
+ SLOT_INTERFACE("qd", FLOPPY_525_QD )
+SLOT_INTERFACE_END
+
+MC6845_UPDATE_ROW( mbc200_state::update_row )
+{
+ const rgb_t *palette = m_palette->palette()->entry_list_raw();
+ UINT8 gfx;
+ UINT16 mem,x;
+ UINT32 *p = &bitmap.pix32(y);
+
+ for (x = 0; x < x_count; x++)
+ {
+ mem = (ma+x)*4+ra;
+ gfx = m_vram[mem];
+ *p++ = palette[BIT(gfx, 7)];
+ *p++ = palette[BIT(gfx, 6)];
+ *p++ = palette[BIT(gfx, 5)];
+ *p++ = palette[BIT(gfx, 4)];
+ *p++ = palette[BIT(gfx, 3)];
+ *p++ = palette[BIT(gfx, 2)];
+ *p++ = palette[BIT(gfx, 1)];
+ *p++ = palette[BIT(gfx, 0)];
+ }
+}
+
+static const gfx_layout mbc200_chars_8x8 =
+{
+ 8,8,
+ 256,
+ 1,
+ { 0 },
+ { 0, 1, 2, 3, 4, 5, 6, 7 },
+ { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
+ 8*8
+};
+
+static GFXDECODE_START( mbc200 )
+ GFXDECODE_ENTRY( "subcpu", 0x1800, mbc200_chars_8x8, 0, 1 )
+GFXDECODE_END
+
+
+static MACHINE_CONFIG_START( mbc200, mbc200_state )
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu",Z80, XTAL_8MHz/2) // NEC D780C-1
+ MCFG_CPU_PROGRAM_MAP(mbc200_mem)
+ MCFG_CPU_IO_MAP(mbc200_io)
+
+ MCFG_CPU_ADD("subcpu",Z80, XTAL_8MHz/2) // NEC D780C-1
+ MCFG_CPU_PROGRAM_MAP(mbc200_sub_mem)
+ MCFG_CPU_IO_MAP(mbc200_sub_io)
+
+ /* video hardware */
+ MCFG_SCREEN_ADD("screen", RASTER)
+ MCFG_SCREEN_REFRESH_RATE(50)
+ MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
+ MCFG_SCREEN_SIZE(640, 400)
+ MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 400-1)
+ MCFG_SCREEN_UPDATE_DEVICE("crtc", h46505_device, screen_update)
+ MCFG_GFXDECODE_ADD("gfxdecode", "palette", mbc200)
+ MCFG_PALETTE_ADD_BLACK_AND_WHITE("palette")
+
+ MCFG_MC6845_ADD("crtc", H46505, "screen", XTAL_8MHz / 4) // HD46505SP
+ MCFG_MC6845_SHOW_BORDER_AREA(false)
+ MCFG_MC6845_CHAR_WIDTH(8)
+ MCFG_MC6845_UPDATE_ROW_CB(mbc200_state, update_row)
+
+ MCFG_DEVICE_ADD("ppi_1", I8255, 0)
+
+ MCFG_DEVICE_ADD("ppi_2", I8255, 0)
+ MCFG_I8255_IN_PORTA_CB(READ8(mbc200_state, p2_porta_r))
+
+ MCFG_DEVICE_ADD("ppi_m", I8255, 0)
+ MCFG_I8255_OUT_PORTA_CB(WRITE8(mbc200_state, pm_porta_w))
+ MCFG_I8255_OUT_PORTB_CB(WRITE8(mbc200_state, pm_portb_w))
+
+ MCFG_DEVICE_ADD("i8251_1", I8251, 0) // INS8251N
+ MCFG_DEVICE_ADD("i8251_2", I8251, 0) // INS8251A
+
+ MCFG_MB8876_ADD("fdc", XTAL_8MHz / 8) // guess
+ MCFG_FLOPPY_DRIVE_ADD("fdc:0", mbc200_floppies, "qd", floppy_image_device::default_floppy_formats)
+ MCFG_FLOPPY_DRIVE_ADD("fdc:1", mbc200_floppies, "qd", floppy_image_device::default_floppy_formats)
+
+ /* software lists */
+ MCFG_SOFTWARE_LIST_ADD("flop_list", "mbc200")
+MACHINE_CONFIG_END
+
+/* ROM definition */
+ROM_START( mbc200 )
+ ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
+ ROM_REGION( 0x1000, "roms", 0 )
+ ROM_LOAD( "d2732a.bin", 0x0000, 0x1000, CRC(bf364ce8) SHA1(baa3a20a5b01745a390ef16628dc18f8d682d63b))
+ ROM_REGION( 0x10000, "subcpu", ROMREGION_ERASEFF )
+ ROM_LOAD( "m5l2764.bin", 0x0000, 0x2000, CRC(377300a2) SHA1(8563172f9e7f84330378a8d179f4138be5fda099))
+ROM_END
+
+/* Driver */
+
+/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
+COMP( 1982, mbc200, 0, 0, mbc200, mbc200, driver_device, 0, "Sanyo", "MBC-200", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)