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mmm.cpp
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/
mmm.cpp
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// license:BSD-3-Clause
// copyright-holders:David Haywood
/* Early Maygay HW
I believe this is 'Triple M' or 'MMM' hardware
Z80 based Fruit Machine
*/
#include "emu.h"
#include "cpu/z80/z80.h"
#include "machine/z80ctc.h"
#include "sound/ay8910.h"
#include "speaker.h"
namespace {
class mmm_state : public driver_device
{
public:
mmm_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_ctc(*this, "ctc")
, m_inputs(*this, "IN%u", 0)
{ }
void mmm(machine_config &config);
private:
void strobe_w(u8 data);
u8 inputs_r();
void ay_porta_w(u8 data);
u8 ctc_r(offs_t offset);
void ctc_w(offs_t offset, u8 data);
void io_map(address_map &map);
void mem_map(address_map &map);
required_device<z80_device> m_maincpu;
required_device<z80ctc_device> m_ctc;
required_ioport_array<8> m_inputs;
u8 m_strobe = 0;
};
void mmm_state::strobe_w(u8 data)
{
m_strobe = data;
}
u8 mmm_state::inputs_r()
{
u8 result = 0xff;
for (int i = 0; i < 8; i++)
if (BIT(m_strobe, i))
result &= m_inputs[i]->read();
return result;
}
void mmm_state::ay_porta_w(u8 data)
{
logerror("Writing %02X to AY-3-8910 port A\n", data);
}
u8 mmm_state::ctc_r(offs_t offset)
{
return m_ctc->read(offset >> 4);
}
void mmm_state::ctc_w(offs_t offset, u8 data)
{
m_ctc->write(offset >> 4, data);
}
void mmm_state::mem_map(address_map &map)
{
map(0x0000, 0x3fff).rom();
map(0x4000, 0x40ff).ram();
}
void mmm_state::io_map(address_map &map)
{
map.global_mask(0xff);
map(0x00, 0x00).w(FUNC(mmm_state::strobe_w));
map(0x03, 0x03).w("aysnd", FUNC(ay8910_device::address_w));
map(0x04, 0x04).w("aysnd", FUNC(ay8910_device::data_w));
map(0x05, 0x05).r("aysnd", FUNC(ay8910_device::data_r));
map(0x06, 0x06).select(0x30).rw(FUNC(mmm_state::ctc_r), FUNC(mmm_state::ctc_w));
map(0x07, 0x07).r(FUNC(mmm_state::inputs_r));
}
static INPUT_PORTS_START( mmm )
PORT_START("IN0")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START("IN1")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START("IN2")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START("IN3")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START("IN4")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START("IN5")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START("IN6")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START("IN7")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
INPUT_PORTS_END
static const z80_daisy_config mmm_daisy_chain[] =
{
{ "ctc" },
{ nullptr }
};
void mmm_state::mmm(machine_config &config)
{
/* basic machine hardware */
Z80(config, m_maincpu, 2000000); /* ? MHz */
m_maincpu->set_addrmap(AS_PROGRAM, &mmm_state::mem_map);
m_maincpu->set_addrmap(AS_IO, &mmm_state::io_map);
m_maincpu->set_daisy_config(mmm_daisy_chain);
Z80CTC(config, m_ctc, 2000000);
m_ctc->intr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
/* sound hardware */
SPEAKER(config, "mono").front_center();
ay8910_device& ay(AY8910(config, "aysnd", 1000000));
ay.port_a_write_callback().set(FUNC(mmm_state::ay_porta_w));
ay.add_route(ALL_OUTPUTS, "mono", 0.30);
}
ROM_START( mmm_ldip )
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD( "ld1.bin", 0x0000, 0x1000, CRC(5a3c2402) SHA1(4972d309e6aabef4f9277ea851e45981d0cb3dbb) )
ROM_LOAD( "ld2.bin", 0x1000, 0x1000, CRC(ff82643b) SHA1(0e47cdc9c0eb6f05a420d2ffeb2ebf22acbda15b) )
ROM_LOAD( "ld3.bin", 0x2000, 0x1000, CRC(9e7158ae) SHA1(7f3b8730add127ed0608365875be3042fb2e3e7a) )
ROM_LOAD( "ld4.bin", 0x3000, 0x1000, CRC(970b749f) SHA1(fe6da7abc699db69c0761304f588b5bed899c674) )
ROM_END
} // anonymous namespace
GAME( 198?, mmm_ldip, 0, mmm, mmm, mmm_state, empty_init, ROT0, "Maygay", "Lucky Dip (Maygay)", MACHINE_IS_SKELETON_MECHANICAL)