// license:BSD-3-Clause // copyright-holders:Olivier Galibert /*************************************************************************** rp2a03.cpp 6502, NES variant ***************************************************************************/ #include "emu.h" #include "rp2a03.h" #include "rp2a03d.h" DEFINE_DEVICE_TYPE(RP2A03_CORE, rp2a03_core_device, "rp2a03_core", "Ricoh RP2A03 core") // needed for some VT systems with XOP instead of standard APU DEFINE_DEVICE_TYPE(RP2A03, rp2a03_device, "rp2a03", "Ricoh RP2A03") // earliest version, found in punchout, spnchout, dkong3, VS. systems, and some early Famicoms DEFINE_DEVICE_TYPE(RP2A03G, rp2a03g_device, "rp2a03g", "Ricoh RP2A03G") // later revision, found in front-loader NES void rp2a03_device::rp2a03_map(address_map &map) { map(0x4000, 0x4013).w(m_apu, FUNC(nesapu_device::write)); map(0x4015, 0x4015).lw8(NAME([this](u8 data) { m_apu->write(0x15, data); })); map(0x4017, 0x4017).lw8(NAME([this](u8 data) { m_apu->write(0x17, data); })); map(0x4015, 0x4015).r(m_apu, FUNC(nesapu_device::status_r)); // 0x4014 w -> NES sprite DMA (is this internal?) // 0x4016 w -> d0-d2: RP2A03 OUT0,OUT1,OUT2 // 0x4016 r -> d0-d4: RP2A03 IN0 // 0x4017 r -> d0-d4: RP2A03 IN1 } rp2a03_core_device::rp2a03_core_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) : m6502_device(mconfig, type, tag, owner, clock) { } rp2a03_core_device::rp2a03_core_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : rp2a03_core_device(mconfig, RP2A03_CORE, tag, owner, clock) { } rp2a03_device::rp2a03_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) : rp2a03_core_device(mconfig, type, tag, owner, clock) , device_mixer_interface(mconfig, *this) , m_apu(*this, "nesapu") { program_config.m_internal_map = address_map_constructor(FUNC(rp2a03_device::rp2a03_map), this); } rp2a03_device::rp2a03_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : rp2a03_device(mconfig, RP2A03, tag, owner, clock) { } rp2a03g_device::rp2a03g_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : rp2a03_device(mconfig, RP2A03G, tag, owner, clock) { } std::unique_ptr rp2a03_core_device::create_disassembler() { return std::make_unique(); } void rp2a03_device::apu_irq(int state) { // games relying on the APU_IRQ don't seem to work anyway? (nes software list : timelord, mig29sf, firehawk) set_input_line(RP2A03_APU_IRQ_LINE, state ? ASSERT_LINE : CLEAR_LINE); } uint8_t rp2a03_device::apu_read_mem(offs_t offset) { return mintf->program.read_byte(offset); } void rp2a03_device::device_add_mconfig(machine_config &config) { APU_2A03(config, m_apu, DERIVED_CLOCK(1,1)); m_apu->irq().set(FUNC(rp2a03_device::apu_irq)); m_apu->mem_read().set(FUNC(rp2a03_device::apu_read_mem)); m_apu->add_route(ALL_OUTPUTS, *this, 1.0, 0); } void rp2a03g_device::device_add_mconfig(machine_config &config) { NES_APU(config, m_apu, DERIVED_CLOCK(1,1)); m_apu->irq().set(FUNC(rp2a03g_device::apu_irq)); m_apu->mem_read().set(FUNC(rp2a03g_device::apu_read_mem)); m_apu->add_route(ALL_OUTPUTS, *this, 1.0, 0); } #include "cpu/m6502/rp2a03.hxx"