// license:BSD-3-Clause
// copyright-holders:David Haywood,Alex Marshall
/***************************************************************************
NMK004 emulation
***************************************************************************/
#include "emu.h"
#include "nmk004.h"
#include "sound/2203intf.h"
#include "sound/okim6295.h"
WRITE8_MEMBER( nmk004_device::write )
{
machine().scheduler().synchronize();
to_nmk004 = data;
}
READ8_MEMBER( nmk004_device::read )
{
machine().scheduler().synchronize();
return to_main;
}
WRITE8_MEMBER(nmk004_device::nmk004_port4_w)
{
// bit 0x08 toggles frequently but is connected to nothing?
// bit 0x01 is set to reset the 68k
m_reset_cb(BIT(data, 0) ? ASSERT_LINE : CLEAR_LINE);
}
WRITE8_MEMBER(nmk004_device::nmk004_oki0_bankswitch_w)
{
data &= 3;
membank(":okibank1")->set_entry(data);
}
WRITE8_MEMBER(nmk004_device::nmk004_oki1_bankswitch_w)
{
data &= 3;
membank(":okibank2")->set_entry(data);
}
READ8_MEMBER(nmk004_device::nmk004_tonmk004_r)
{
machine().scheduler().synchronize();
return to_nmk004;
}
WRITE8_MEMBER(nmk004_device::nmk004_tomain_w)
{
machine().scheduler().synchronize();
to_main = data;
}
void nmk004_device::ym2203_irq_handler(int irq)
{
m_cpu->set_input_line(0, irq ? ASSERT_LINE : CLEAR_LINE);
}
void nmk004_device::nmk004_sound_mem_map(address_map &map)
{
//AM_RANGE(0x0000, 0x1fff) AM_ROM /* 0x0000 - 0x1fff = internal ROM */
map(0x2000, 0xefff).rom().region(":audiocpu", 0x2000);
map(0xf000, 0xf7ff).ram();
map(0xf800, 0xf801).rw(":ymsnd", FUNC(ym2203_device::read), FUNC(ym2203_device::write));
map(0xf900, 0xf900).rw(":oki1", FUNC(okim6295_device::read), FUNC(okim6295_device::write));
map(0xfa00, 0xfa00).rw(":oki2", FUNC(okim6295_device::read), FUNC(okim6295_device::write));
map(0xfb00, 0xfb00).r(this, FUNC(nmk004_device::nmk004_tonmk004_r)); // from main cpu
map(0xfc00, 0xfc00).w(this, FUNC(nmk004_device::nmk004_tomain_w)); // to main cpu
map(0xfc01, 0xfc01).w(this, FUNC(nmk004_device::nmk004_oki0_bankswitch_w));
map(0xfc02, 0xfc02).w(this, FUNC(nmk004_device::nmk004_oki1_bankswitch_w));
}
ROM_START( nmk004 )
ROM_REGION( 0x2000, "mcu", 0 )
ROM_LOAD( "nmk004.bin", 0x00000, 0x02000, CRC(83b6f611) SHA1(bb7ddc00affe8a066002ecd6858dbd2854af8940) )
ROM_END
DEFINE_DEVICE_TYPE(NMK004, nmk004_device, "nmk004", "NMK004")
nmk004_device::nmk004_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, NMK004, tag, owner, clock),
m_cpu(*this, "mcu"),
m_reset_cb(*this),
to_nmk004(0xff),
to_main(0xff)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void nmk004_device::device_start()
{
m_reset_cb.resolve_safe();
membank(":okibank1")->configure_entries(0, 4, memregion(":oki1")->base() + 0x20000, 0x20000);
membank(":okibank2")->configure_entries(0, 4, memregion(":oki2")->base() + 0x20000, 0x20000);
}
//-------------------------------------------------
// device_add_mconfig - add device configuration
//-------------------------------------------------
MACHINE_CONFIG_START(nmk004_device::device_add_mconfig)
MCFG_DEVICE_ADD("mcu",TMP90840, DERIVED_CLOCK(1,1)) // Toshiba TMP90C840AF in QFP64 package with 8Kbyte internal ROM
MCFG_DEVICE_PROGRAM_MAP(nmk004_sound_mem_map)
MCFG_TLCS90_PORT_P4_WRITE_CB(WRITE8(*this, nmk004_device, nmk004_port4_w))
MACHINE_CONFIG_END
//-------------------------------------------------
// device_rom_region - return a pointer to the
// the device's ROM definitions
//-------------------------------------------------
const tiny_rom_entry *nmk004_device::device_rom_region() const
{
return ROM_NAME(nmk004 );
}