diff options
Diffstat (limited to 'src/devices/cpu/m6502/n2a03.cpp')
-rw-r--r-- | src/devices/cpu/m6502/n2a03.cpp | 87 |
1 files changed, 0 insertions, 87 deletions
diff --git a/src/devices/cpu/m6502/n2a03.cpp b/src/devices/cpu/m6502/n2a03.cpp deleted file mode 100644 index 6bfbc2edc98..00000000000 --- a/src/devices/cpu/m6502/n2a03.cpp +++ /dev/null @@ -1,87 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Olivier Galibert -/*************************************************************************** - - n2a03.cpp - - 6502, NES variant - -***************************************************************************/ - -#include "emu.h" -#include "n2a03.h" -#include "n2a03d.h" - -DEFINE_DEVICE_TYPE(N2A03, n2a03_device, "n2a03", "Ricoh N2A03") - -READ8_MEMBER(n2a03_device::psg1_4014_r) -{ - return m_apu->read(0x14); -} - -READ8_MEMBER(n2a03_device::psg1_4015_r) -{ - return m_apu->read(0x15); -} - -WRITE8_MEMBER(n2a03_device::psg1_4015_w) -{ - m_apu->write(0x15, data); -} - -WRITE8_MEMBER(n2a03_device::psg1_4017_w) -{ - m_apu->write(0x17, data); -} - - -// on various drivers output port 0x4014 is used for external hardware (not used by APU?) -// input/output port 0x4016 ^ (not used by APU?) -// input port 0x4017 ^ ( APU_IRQCTRL ) -// is there a fall through where every write is seen by other hw, or do these addresses really not touch the APU?? APU_IRQCTRL can definitely be written by can it be read back? - -void n2a03_device::n2a03_map(address_map &map) -{ - map(0x4000, 0x4013).rw("nesapu", FUNC(nesapu_device::read), FUNC(nesapu_device::write)); - map(0x4014, 0x4014).r(FUNC(n2a03_device::psg1_4014_r)); // AM_WRITE(sprite_dma_0_w) - map(0x4015, 0x4015).rw(FUNC(n2a03_device::psg1_4015_r), FUNC(n2a03_device::psg1_4015_w)); /* PSG status / first control register */ - //map(0x4016, 0x4016).rw(FUNC(n2a03_device::vsnes_in0_r), FUNC(n2a03_device::vsnes_in0_w)); - map(0x4017, 0x4017) /*.r(FUNC(n2a03_device::vsnes_in1_r))*/ .w(FUNC(n2a03_device::psg1_4017_w)); -} - - - -n2a03_device::n2a03_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) - : m6502_device(mconfig, N2A03, tag, owner, clock) - , device_mixer_interface(mconfig, *this, 1) - , m_apu(*this, "nesapu") -{ - program_config.m_internal_map = address_map_constructor(FUNC(n2a03_device::n2a03_map), this); -} - -std::unique_ptr<util::disasm_interface> n2a03_device::create_disassembler() -{ - return std::make_unique<n2a03_disassembler>(); -} - -WRITE_LINE_MEMBER(n2a03_device::apu_irq) -{ - // games relying on the APU_IRQ don't seem to work anyway? (nes software list : timelord, mig29sf, firehawk) - set_input_line(N2A03_APU_IRQ_LINE, state ? ASSERT_LINE : CLEAR_LINE); -} - -READ8_MEMBER(n2a03_device::apu_read_mem) -{ - return mintf->program->read_byte(offset); -} - -void n2a03_device::device_add_mconfig(machine_config &config) -{ - NES_APU(config, m_apu, DERIVED_CLOCK(1,1)); - m_apu->irq().set(FUNC(n2a03_device::apu_irq)); - m_apu->mem_read().set(FUNC(n2a03_device::apu_read_mem)); - m_apu->add_route(ALL_OUTPUTS, *this, 1.0, AUTO_ALLOC_INPUT, 0); -} - - -#include "cpu/m6502/n2a03.hxx" |