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Diffstat (limited to 'src/mame/drivers/mbc200.c')
-rw-r--r-- | src/mame/drivers/mbc200.c | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/src/mame/drivers/mbc200.c b/src/mame/drivers/mbc200.c new file mode 100644 index 00000000000..104b12435e4 --- /dev/null +++ b/src/mame/drivers/mbc200.c @@ -0,0 +1,267 @@ +// 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) |