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// license:BSD-3-Clause copyright-holders:Joakim Larsson Edstrom
/*
Diablo Printer TTL CPU
*/
#ifndef MAME_CPU_DIABLO_DIABLO1300_H
#define MAME_CPU_DIABLO_DIABLO1300_H
#pragma once
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> diablo1300_cpu_device
// Used by core CPU interface
class diablo1300_cpu_device : public cpu_device
{
public:
// construction/destruction
diablo1300_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_stop() override;
// device_execute_interface overrides
virtual uint32_t execute_min_cycles() const override;
virtual uint32_t execute_max_cycles() const override;
//virtual uint32_t execute_input_lines() const override;
virtual void execute_run() override;
//virtual void execute_set_input(int inputnum, int state) override;
// device_memory_interface overrides
virtual space_config_vector memory_space_config() const override;
// device_disasm_interface overrides
virtual std::unique_ptr<util::disasm_interface> create_disassembler() override;
// device_state_interface overrides
//virtual void state_string_export(const device_state_entry &entry, std::string &str) const override;
// address spaces
const address_space_config m_program_config;
const address_space_config m_data_config;
// memory access
inline uint16_t opcode_read(uint16_t addr);
inline uint16_t program_read16(uint16_t addr);
inline void program_write16(uint16_t addr, uint16_t data);
inline uint8_t data_read8(uint16_t addr);
inline void data_write8(uint16_t addr, uint8_t data);
inline uint8_t read_reg(uint16_t reg);
inline uint16_t read_port(uint16_t port){ return 0;}
inline uint16_t read_table(uint16_t offset){ return 0;}
inline void write_reg(uint16_t reg, uint8_t data);
inline void write_port(uint16_t port, uint16_t data){}
inline uint16_t read_ibus(){ return 0; }
// CPU registers
uint16_t m_pc;
uint8_t m_a;
uint8_t m_b;
uint8_t m_carry;
uint8_t m_power_on;
// other internal states
int m_icount;
// address spaces
address_space *m_program;
address_space *m_data;
memory_access_cache<1, -1, ENDIANNESS_LITTLE> *m_cache;
};
// device type definition
DECLARE_DEVICE_TYPE(DIABLO1300, diablo1300_cpu_device)
/***************************************************************************
REGISTER ENUMERATION
***************************************************************************/
enum
{
DIABLO_PC = 1,
DIABLO_A,
DIABLO_B
};
#endif // MAME_CPU_DIABLO_DIABLO1300_H
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