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// license:BSD-3-Clause
// copyright-holders:Wilbert Pol
/*****************************************************************************
uPD177x
******************************************************************************
___ ___
PB4 1 |* u | 28 PB3
PB5 2 | | 27 PB2
PB6 3 | | 26 PB1
PB7 4 | | 25 PA8
PB8 5 | u | 24 PA7
/AC 6 | P | 23 PA6
/PW ON 7 | D | 22 PA5
Vdd 8 | 1 | 21 PA4
X1 9 | 7 | 20 PA3
X0 10 | 7 | 19 PA2
SOUND2 11 | 1 | 18 PA1
Vda 12 | | 17 CH2
SOUND1 13 | | 16 /EXINT
GND 14 |_______| 15 CH1
****************************************************************************/
#ifndef MAME_CPU_UPD177X_UPD177X_H
#define MAME_CPU_UPD177X_UPD177X_H
class upd177x_cpu_device : public cpu_device
, public device_sound_interface
{
public:
upd177x_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
// configuration helpers
auto pb_out_cb() { return m_pb_out_cb.bind(); }
u8 pa_r() { return m_pa; }
void pa_w(u8 data) { m_pa = data; }
void pb_w(u8 data) { m_pb = data; }
protected:
upd177x_cpu_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock);
virtual void device_start() override ATTR_COLD;
virtual void device_reset() override ATTR_COLD;
virtual u32 execute_min_cycles() const noexcept override { return 1; }
virtual u32 execute_max_cycles() const noexcept override { return 2; }
virtual uint32_t execute_default_irq_vector(int inputnum) const noexcept override { return 0xff; }
virtual void execute_run() override;
virtual space_config_vector memory_space_config() const override;
virtual std::unique_ptr<util::disasm_interface> create_disassembler() override;
virtual void sound_stream_update(sound_stream &stream) override;
void program_map(address_map &map) ATTR_COLD;
private:
void op0xxx(u16 opcode);
void op1xxx(u16 opcode);
void op2xxx(u16 opcode);
void op3xxx(u16 opcode);
void op7xxx(u16 opcode);
void op89xxx(u16 opcode);
void opabxxx(u16 opcode);
void opcdxxx(u16 opcode);
void opefxxx(u16 opcode);
void handle_timer();
void set_noise_counter_bit();
void m_cycle();
address_space_config m_program_config;
memory_access<16, 1, -1, ENDIANNESS_LITTLE>::specific m_program;
devcb_write8 m_pb_out_cb;
sound_stream *m_channel;
int m_icount;
u16 m_pc; // 16 bits
u8 m_sp; // 3 bits
u8 m_a; // 8 bits
u8 m_a_save; // 8 bits
u8 m_h; // 6 bits
u8 m_n; // 8 bits
u8 m_timer;
u16 m_counter;
u8 m_x; // 7 bits
u8 m_y; // 5 bits
u8 m_pa;
u8 m_pb;
u8 m_ram[0x40];
u8 m_md0;
u8 m_md1;
u8 m_pnc1; // 7 bits
u8 m_pnc2; // 3 bits
bool m_skip;
bool m_skip_save;
bool m_ts;
bool m_ns;
bool m_ss;
u8 m_dac;
bool m_dac_sign;
bool m_tn_int;
u8 m_noise_counter_bit;
};
class upd1771c_cpu_device : public upd177x_cpu_device
{
public:
upd1771c_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
};
DECLARE_DEVICE_TYPE(UPD1771C, upd1771c_cpu_device)
#endif // MAME_CPU_UPD177X_UPD177X_H
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