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// license:BSD-3-Clause
// copyright-holders:David Haywood
/*********************************\
ARCtangent (A4) core
ARC == Argonaut RISC Core
\*********************************/
#pragma once
#ifndef __ARC_H__
#define __ARC_H__
enum
{
ARC_PC = STATE_GENPC
};
class arc_device : public cpu_device
{
public:
// construction/destruction
arc_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;
// device_execute_interface overrides
virtual uint32_t execute_min_cycles() const override { return 5; }
virtual uint32_t execute_max_cycles() const override { return 5; }
virtual uint32_t execute_input_lines() const override { return 0; }
virtual void execute_run() override;
virtual void execute_set_input(int inputnum, int state) override;
// device_memory_interface overrides
virtual const address_space_config *memory_space_config(address_spacenum spacenum = AS_0) const override { return (spacenum == AS_PROGRAM) ? &m_program_config : nullptr; }
// device_state_interface overrides
virtual void state_import(const device_state_entry &entry) override;
virtual void state_export(const device_state_entry &entry) override;
// device_disasm_interface overrides
virtual uint32_t disasm_min_opcode_bytes() const override { return 4; }
virtual uint32_t disasm_max_opcode_bytes() const override { return 4; }
virtual offs_t disasm_disassemble(std::ostream &stream, offs_t pc, const uint8_t *oprom, const uint8_t *opram, uint32_t options) override;
private:
address_space_config m_program_config;
// 0 - 28 = r00 - r28 (General Purpose Registers)
// 29 = r29 (ILINK1)
// 30 = r30 (ILINE2)
// 31 = r31 (BLINK)
// 32- 59 = r32 - r59 (Reserved Registers)
// 60 = LPCOUNT
// 61 = Short Immediate Data Indicator Settings Flag
// 62 = Long Immediate Data Indicator
// 63 = Short Immediate Data Indicator NOT Settings Flag
uint32_t m_pc;
//uint32_t m_r[64];
address_space *m_program;
int m_icount;
uint32_t m_debugger_temp;
void unimplemented_opcode(uint16_t op);
inline uint32_t READ32(uint32_t address);
inline void WRITE32(uint32_t address, uint32_t data);
};
extern const device_type ARC;
#endif /* __ARC_H__ */
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