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// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
/***************************************************************************
rp2a03.h
6502, NES variant
***************************************************************************/
#ifndef MAME_CPU_M6502_RP2A03_H
#define MAME_CPU_M6502_RP2A03_H
#pragma once
#include "m6502.h"
#include "sound/nes_apu.h"
class rp2a03_core_device : public m6502_device {
public:
rp2a03_core_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock);
virtual std::unique_ptr<util::disasm_interface> create_disassembler() override;
virtual void do_exec_full() override;
virtual void do_exec_partial() override;
protected:
rp2a03_core_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, const XTAL &clock);
#define O(o) void o ## _full(); void o ## _partial()
// rp2a03 opcodes - same as 6502 with D disabled
O(adc_nd_aba); O(adc_nd_abx); O(adc_nd_aby); O(adc_nd_idx); O(adc_nd_idy); O(adc_nd_imm); O(adc_nd_zpg); O(adc_nd_zpx);
O(arr_nd_imm);
O(isb_nd_aba); O(isb_nd_abx); O(isb_nd_aby); O(isb_nd_idx); O(isb_nd_idy); O(isb_nd_zpg); O(isb_nd_zpx);
O(rra_nd_aba); O(rra_nd_abx); O(rra_nd_aby); O(rra_nd_idx); O(rra_nd_idy); O(rra_nd_zpg); O(rra_nd_zpx);
O(sbc_nd_aba); O(sbc_nd_abx); O(sbc_nd_aby); O(sbc_nd_idx); O(sbc_nd_idy); O(sbc_nd_imm); O(sbc_nd_zpg); O(sbc_nd_zpx);
#undef O
private:
};
class rp2a03_device : public rp2a03_core_device, public device_mixer_interface {
public:
rp2a03_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock);
uint8_t psg1_4014_r();
uint8_t psg1_4015_r();
void psg1_4015_w(uint8_t data);
void psg1_4017_w(uint8_t data);
void rp2a03_map(address_map &map);
protected:
rp2a03_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, const XTAL &clock);
required_device<nesapu_device> m_apu;
virtual void device_add_mconfig(machine_config &config) override;
DECLARE_WRITE_LINE_MEMBER(apu_irq);
uint8_t apu_read_mem(offs_t offset);
};
class rp2a03g_device : public rp2a03_device
{
public:
rp2a03g_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock);
protected:
virtual void device_add_mconfig(machine_config &config) override;
};
/* These are the official XTAL values and clock rates used by Nintendo for
manufacturing throughout the production of the 2A03. PALC_APU_CLOCK is
the clock rate devised by UMC(?) for PAL Famicom clone hardware. */
#define RP2A03_NTSC_XTAL XTAL(21'477'272)
#define RP2A03_PAL_XTAL XTAL(26'601'712)
#define NTSC_APU_CLOCK (RP2A03_NTSC_XTAL/12) /* 1.7897726666... MHz */
#define PAL_APU_CLOCK (RP2A03_PAL_XTAL/16) /* 1.662607 MHz */
#define PALC_APU_CLOCK (RP2A03_PAL_XTAL/15) /* 1.77344746666... MHz */
enum {
RP2A03_IRQ_LINE = m6502_device::IRQ_LINE,
RP2A03_APU_IRQ_LINE = m6502_device::APU_IRQ_LINE,
RP2A03_NMI_LINE = m6502_device::NMI_LINE,
RP2A03_SET_OVERFLOW = m6502_device::V_LINE
};
DECLARE_DEVICE_TYPE(RP2A03_CORE, rp2a03_core_device)
DECLARE_DEVICE_TYPE(RP2A03, rp2a03_device)
DECLARE_DEVICE_TYPE(RP2A03G, rp2a03g_device)
#endif // MAME_CPU_M6502_RP2A03_H
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