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spc700.c: Modernized cpu core. [Wilbert Pol]

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Wilbert Pol 2013-12-26 15:05:35 +00:00
parent 9db8b1fe3b
commit d463ad4bb1
2 changed files with 524 additions and 536 deletions
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951
src/emu/cpu/spc700/spc700.c
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109
src/emu/cpu/spc700/spc700.h
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@ -4,15 +4,116 @@
#define __SPC700_H__
DECLARE_LEGACY_CPU_DEVICE(SPC700, spc700);
class spc700_device : public cpu_device
{
public:
// construction/destruction
spc700_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
protected:
// device-level overrides
virtual void device_start();
virtual void device_reset();
// device_execute_interface overrides
virtual UINT32 execute_min_cycles() const { return 2; }
virtual UINT32 execute_max_cycles() const { return 8; }
virtual UINT32 execute_input_lines() const { return 1; }
virtual void execute_run();
virtual void execute_set_input(int inputnum, int state);
// device_memory_interface overrides
virtual const address_space_config *memory_space_config(address_spacenum spacenum = AS_0) const { return (spacenum == AS_PROGRAM) ? &m_program_config : NULL; }
// device_state_interface overrides
virtual void state_import(const device_state_entry &entry);
virtual void state_export(const device_state_entry &entry);
void state_string_export(const device_state_entry &entry, astring &string);
// device_disasm_interface overrides
virtual UINT32 disasm_min_opcode_bytes() const { return 1; }
virtual UINT32 disasm_max_opcode_bytes() const { return 3; }
virtual offs_t disasm_disassemble(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram, UINT32 options);
private:
address_space_config m_program_config;
UINT32 m_a; /* Accumulator */
UINT32 m_x; /* Index Register X */
UINT32 m_y; /* Index Register Y */
UINT32 m_s; /* Stack Pointer */
UINT32 m_pc; /* Program Counter */
UINT32 m_ppc; /* Previous Program Counter */
UINT32 m_flag_n; /* Negative Flag */
UINT32 m_flag_z; /* Zero flag */
UINT32 m_flag_v; /* Overflow Flag */
UINT32 m_flag_p; /* Direct Page Flag */
UINT32 m_flag_b; /* BRK Instruction Flag */
UINT32 m_flag_h; /* Half-carry Flag */
UINT32 m_flag_i; /* Interrupt Mask Flag */
UINT32 m_flag_c; /* Carry Flag */
UINT32 m_line_irq; /* Status of the IRQ line */
UINT32 m_line_nmi; /* Status of the NMI line */
UINT32 m_line_rst; /* Status of the RESET line */
UINT32 m_ir; /* Instruction Register */
address_space *m_program;
UINT32 m_stopped; /* stopped status */
int m_ICount;
UINT32 m_source;
UINT32 m_destination;
UINT32 m_temp1;
UINT32 m_temp2;
UINT32 m_temp3;
short m_spc_int16;
int m_spc_int32;
UINT32 m_debugger_temp;
inline UINT32 read_8_normal(UINT32 address);
inline UINT32 read_8_immediate(UINT32 address);
inline UINT32 read_8_instruction(UINT32 address);
inline UINT32 read_8_direct(UINT32 address);
inline void write_8_normal(UINT32 address, UINT32 value);
inline void write_8_direct(UINT32 address, UINT32 value);
inline UINT32 read_16_normal(UINT32 address);
inline UINT32 read_16_immediate(UINT32 address);
inline UINT32 read_16_direct(UINT32 address);
inline void write_16_direct(UINT32 address, UINT32 value);
inline UINT32 EA_IMM();
inline UINT32 EA_IMM16();
inline UINT32 EA_ABS();
inline UINT32 EA_ABX();
inline UINT32 EA_ABY();
inline UINT32 EA_AXI();
inline UINT32 EA_DP();
inline UINT32 EA_DPX();
inline UINT32 EA_DPY();
inline UINT32 EA_DXI();
inline UINT32 EA_DIY();
inline UINT32 EA_XI();
inline UINT32 EA_XII();
inline UINT32 EA_YI();
inline void JUMP(UINT32 address);
inline void BRANCH(UINT32 offset);
inline void SET_REG_YA(UINT32 value);
inline void SET_REG_P(UINT32 value);
inline void PUSH_8(UINT32 value);
inline UINT32 PULL_8();
inline void PUSH_16(UINT32 value);
inline UINT32 PULL_16();
inline void CHECK_IRQ();
inline void SET_FLAG_I(UINT32 value);
void SERVICE_IRQ();
};
extern const device_type SPC700;
/* ======================================================================== */
/* ============================= Configuration ============================ */
/* ======================================================================== */
#undef uint
#define uint unsigned int
/* Turn on optimizations for SNES since it doesn't hook up the interrupt lines */
#define SPC700_OPTIMIZE_SNES 1