// license:BSD-3-Clause
// copyright-holders:Miodrag Milanovic, Robbbert
/***************************************************************************
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.
Keyboard communicates via RS232 to uart at E0,E1. The processor and rom for it
are undumped / unknown. The input codes are not ascii, so using custom code until
the required details become available.
On back side:
- keyboard DIN connector
- Centronics printer port
- RS-232C 25pin connector
SBASIC:
Running programs: the file names used within SBASIC must be in
uppercase. For example, run "DEMO" .
You can also run a basic program from CP/M: sbasic "GRAPHICS" .
To Break, press either ^N or ^O (display freezes), then ^C .
Some control keys: 0x14 = Home; 0x8 = Left/BS; 0xA = Down; 0xB = Up; 0xC = Right.
GAIJI.BAS doesn't work because GAIJI.FNT is missing.
TODO:
- 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. CP/M now loads.
2016-07-16 Added keyboard and sound.
****************************************************************************/
#include "emu.h"
#include "cpu/z80/z80.h"
#include "machine/i8251.h"
#include "machine/i8255.h"
#include "machine/keyboard.h"
#include "machine/wd_fdc.h"
#include "sound/beep.h"
#include "sound/spkrdev.h"
#include "video/mc6845.h"
#include "screen.h"
#include "softlist.h"
#include "speaker.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_beep(*this, "beeper")
, m_speaker(*this, "speaker")
, m_fdc(*this, "fdc")
, m_floppy0(*this, "fdc:0")
, m_floppy1(*this, "fdc:1")
{ }
DECLARE_READ8_MEMBER(p2_porta_r);
DECLARE_WRITE8_MEMBER(p1_portc_w);
DECLARE_WRITE8_MEMBER(pm_porta_w);
DECLARE_WRITE8_MEMBER(pm_portb_w);
DECLARE_READ8_MEMBER(keyboard_r);
void kbd_put(u8 data);
MC6845_UPDATE_ROW(update_row);
required_device<palette_device> m_palette;
void mbc200(machine_config &config);
void mbc200_io(address_map &map);
void mbc200_mem(address_map &map);
void mbc200_sub_io(address_map &map);
void mbc200_sub_mem(address_map &map);
private:
virtual void machine_start() override;
virtual void machine_reset() override;
uint8_t m_comm_latch;
uint8_t m_term_data;
required_device<mc6845_device> m_crtc;
required_device<i8255_device> m_ppi_m;
required_shared_ptr<uint8_t> m_vram;
required_device<cpu_device> m_maincpu;
required_device<beep_device> m_beep;
required_device<speaker_sound_device> m_speaker;
required_device<mb8876_device> m_fdc;
required_device<floppy_connector> m_floppy0;
required_device<floppy_connector> m_floppy1;
};
void mbc200_state::mbc200_mem(address_map &map)
{
map.unmap_value_high();
map(0x0000, 0x0fff).ram().region("maincpu", 0);
map(0x1000, 0xffff).ram();
}
WRITE8_MEMBER( mbc200_state::p1_portc_w )
{
m_speaker->level_w(BIT(data,4)); // used by beep command in basic
}
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 = nullptr;
// 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));
}
m_beep->set_state(BIT(data, 1)); // key-click
}
void mbc200_state::mbc200_io(address_map &map)
{
map.unmap_value_high();
map.global_mask(0xff);
//AM_RANGE(0xe0, 0xe0) AM_DEVREADWRITE("uart1", i8251_device, data_r, data_w)
//AM_RANGE(0xe1, 0xe1) AM_DEVREADWRITE("uart1", i8251_device, status_r, control_w)
map(0xe0, 0xe1).r(this, FUNC(mbc200_state::keyboard_r)).nopw();
map(0xe4, 0xe7).rw(m_fdc, FUNC(mb8876_device::read), FUNC(mb8876_device::write));
map(0xe8, 0xeb).rw(m_ppi_m, FUNC(i8255_device::read), FUNC(i8255_device::write));
map(0xec, 0xec).rw("uart2", FUNC(i8251_device::data_r), FUNC(i8251_device::data_w));
map(0xed, 0xed).rw("uart2", FUNC(i8251_device::status_r), FUNC(i8251_device::control_w));
}
void mbc200_state::mbc200_sub_mem(address_map &map)
{
map.unmap_value_high();
map(0x0000, 0x2fff).rom();
map(0x3000, 0x7fff).ram();
map(0x8000, 0xffff).ram().share("vram");
}
READ8_MEMBER(mbc200_state::p2_porta_r)
{
machine().scheduler().synchronize(); // force resync
uint8_t tmp = m_comm_latch;
m_comm_latch = 0;
m_ppi_m->pc6_w(0); // ppi_ack
return tmp;
}
void mbc200_state::mbc200_sub_io(address_map &map)
{
map.unmap_value_high();
map.global_mask(0xff);
map(0x70, 0x73).rw("ppi_1", FUNC(i8255_device::read), FUNC(i8255_device::write));
map(0xb0, 0xb0).rw(m_crtc, FUNC(mc6845_device::status_r), FUNC(mc6845_device::address_w));
map(0xb1, 0xb1).rw(m_crtc, FUNC(mc6845_device::register_r), FUNC(mc6845_device::register_w));
map(0xd0, 0xd3).rw("ppi_2", FUNC(i8255_device::read), FUNC(i8255_device::write));
}
/* Input ports */
static INPUT_PORTS_START( mbc200 )
INPUT_PORTS_END
READ8_MEMBER( mbc200_state::keyboard_r )
{
uint8_t data = 0;
if (offset)
{
if (m_term_data)
{
data = 2;
// handle CTRL key pressed
if (m_term_data < 0x20)
{
data |= 8;
m_term_data |= 0x40;
}
}
}
else
{
data = m_term_data;
m_term_data = 0;
}
return data;
}
// convert standard control keys to expected code;
void mbc200_state::kbd_put(u8 data)
{
switch (data)
{
case 0x0e:
m_term_data = 0xe2;
break;
case 0x0f:
m_term_data = 0xe3;
break;
case 0x08:
m_term_data = 0xe4;
break;
case 0x09:
m_term_data = 0xe5;
break;
case 0x0a:
m_term_data = 0xe6;
break;
case 0x0d:
m_term_data = 0xe7;
break;
case 0x1b:
m_term_data = 0xe8;
break;
default:
m_term_data = data;
}
}
void mbc200_state::machine_start()
{
}
void mbc200_state::machine_reset()
{
uint8_t* roms = memregion("roms")->base();
uint8_t* main = memregion("maincpu")->base();
memcpy(main, roms, 0x1000);
}
static void mbc200_floppies(device_slot_interface &device)
{
device.option_add("qd", FLOPPY_525_QD);
}
MC6845_UPDATE_ROW( mbc200_state::update_row )
{
const rgb_t *palette = m_palette->palette()->entry_list_raw();
uint8_t gfx;
uint16_t mem,x;
uint32_t *p = &bitmap.pix32(y);
for (x = 0; x < x_count; x++)
{
mem = (ma+x)*4+ra;
gfx = m_vram[mem & 0x7fff];
*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( gfx_mbc200 )
GFXDECODE_ENTRY( "subcpu", 0x1800, mbc200_chars_8x8, 0, 1 )
GFXDECODE_END
MACHINE_CONFIG_START(mbc200_state::mbc200)
/* basic machine hardware */
MCFG_DEVICE_ADD("maincpu",Z80, XTAL(8'000'000)/2) // NEC D780C-1
MCFG_DEVICE_PROGRAM_MAP(mbc200_mem)
MCFG_DEVICE_IO_MAP(mbc200_io)
MCFG_DEVICE_ADD("subcpu",Z80, XTAL(8'000'000)/2) // NEC D780C-1
MCFG_DEVICE_PROGRAM_MAP(mbc200_sub_mem)
MCFG_DEVICE_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_DEVICE_ADD("gfxdecode", GFXDECODE, "palette", gfx_mbc200)
MCFG_PALETTE_ADD_MONOCHROME("palette")
MCFG_MC6845_ADD("crtc", H46505, "screen", XTAL(8'000'000) / 4) // HD46505SP
MCFG_MC6845_SHOW_BORDER_AREA(false)
MCFG_MC6845_CHAR_WIDTH(8)
MCFG_MC6845_UPDATE_ROW_CB(mbc200_state, update_row)
// sound
SPEAKER(config, "mono").front_center();
MCFG_DEVICE_ADD("beeper", BEEP, 1000) // frequency unknown
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MCFG_DEVICE_ADD("speaker", SPEAKER_SOUND)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MCFG_DEVICE_ADD("ppi_1", I8255, 0)
MCFG_I8255_OUT_PORTC_CB(WRITE8(*this, mbc200_state, p1_portc_w))
MCFG_DEVICE_ADD("ppi_2", I8255, 0)
MCFG_I8255_IN_PORTA_CB(READ8(*this, mbc200_state, p2_porta_r))
MCFG_DEVICE_ADD("ppi_m", I8255, 0)
MCFG_I8255_OUT_PORTA_CB(WRITE8(*this, mbc200_state, pm_porta_w))
MCFG_I8255_OUT_PORTB_CB(WRITE8(*this, mbc200_state, pm_portb_w))
MCFG_DEVICE_ADD("uart1", I8251, 0) // INS8251N
MCFG_DEVICE_ADD("uart2", I8251, 0) // INS8251A
MCFG_MB8876_ADD("fdc", XTAL(8'000'000) / 8) // guess
MCFG_FLOPPY_DRIVE_ADD("fdc:0", mbc200_floppies, "qd", floppy_image_device::default_floppy_formats)
MCFG_FLOPPY_DRIVE_SOUND(true)
MCFG_FLOPPY_DRIVE_ADD("fdc:1", mbc200_floppies, "qd", floppy_image_device::default_floppy_formats)
MCFG_FLOPPY_DRIVE_SOUND(true)
/* Keyboard */
MCFG_DEVICE_ADD("keyboard", GENERIC_KEYBOARD, 0)
MCFG_GENERIC_KEYBOARD_CB(PUT(mbc200_state, kbd_put))
/* software lists */
MCFG_SOFTWARE_LIST_ADD("flop_list", "mbc200")
MACHINE_CONFIG_END
/* ROM definition */
ROM_START( mbc200 )
ROM_REGION( 0x1000, "maincpu", ROMREGION_ERASEFF )
ROM_REGION( 0x1000, "roms", 0 )
ROM_LOAD( "d2732a.bin", 0x0000, 0x1000, CRC(bf364ce8) SHA1(baa3a20a5b01745a390ef16628dc18f8d682d63b))
ROM_REGION( 0x3000, "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, mbc200_state, empty_init, "Sanyo", "MBC-200", 0 )