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tms32025.c: Modernized cpu core. [Wilbert Pol]
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Wilbert Pol
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@ -66,9 +66,301 @@ enum
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* Public Functions
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*/
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DECLARE_LEGACY_CPU_DEVICE(TMS32025, tms32025);
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DECLARE_LEGACY_CPU_DEVICE(TMS32026, tms32026);
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CPU_DISASSEMBLE( tms32025 );
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class tms32025_device : public cpu_device
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{
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public:
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// construction/destruction
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tms32025_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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tms32025_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);
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protected:
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// device-level overrides
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virtual void device_start();
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virtual void device_reset();
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// device_execute_interface overrides
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virtual UINT32 execute_min_cycles() const { return 4; }
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virtual UINT32 execute_max_cycles() const { return 20; }
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virtual UINT32 execute_input_lines() const { return 6; }
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virtual void execute_run();
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virtual void execute_set_input(int inputnum, int state);
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// device_memory_interface overrides
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virtual const address_space_config *memory_space_config(address_spacenum spacenum = AS_0) const { return (spacenum == AS_PROGRAM) ? &m_program_config : ( (spacenum == AS_IO) ? &m_io_config : ( (spacenum == AS_DATA) ? &m_data_config : NULL ) ); }
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virtual bool memory_read(address_spacenum spacenum, offs_t offset, int size, UINT64 &value);
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virtual bool memory_write(address_spacenum spacenum, offs_t offset, int size, UINT64 value);
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virtual bool memory_readop(offs_t offset, int size, UINT64 &value);
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// device_state_interface overrides
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virtual void state_import(const device_state_entry &entry);
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virtual void state_export(const device_state_entry &entry);
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void state_string_export(const device_state_entry &entry, astring &string);
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// device_disasm_interface overrides
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virtual UINT32 disasm_min_opcode_bytes() const { return 2; }
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virtual UINT32 disasm_max_opcode_bytes() const { return 4; }
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virtual offs_t disasm_disassemble(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram, UINT32 options);
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private:
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address_space_config m_program_config;
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address_space_config m_data_config;
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address_space_config m_io_config;
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typedef void ( tms32025_device::*opcode_func ) ();
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struct tms32025_opcode
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{
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UINT8 cycles;
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opcode_func function;
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};
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static const tms32025_opcode s_opcode_main[256];
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static const tms32025_opcode s_opcode_CE_subset[256];
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static const tms32025_opcode s_opcode_Dx_subset[8];
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/******************** CPU Internal Registers *******************/
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UINT16 m_PREVPC; /* previous program counter */
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UINT16 m_PC;
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UINT16 m_PFC;
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UINT16 m_STR0, m_STR1;
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UINT8 m_IFR;
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UINT8 m_RPTC;
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PAIR m_ACC;
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PAIR m_Preg;
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UINT16 m_Treg;
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UINT16 m_AR[8];
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UINT16 m_STACK[8];
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PAIR m_ALU;
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protected:
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UINT16 m_intRAM[0x800];
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private:
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UINT8 m_timerover;
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/********************** Status data ****************************/
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PAIR m_opcode;
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int m_idle;
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int m_hold;
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int m_external_mem_access; /** required for hold mode. Implement it ! */
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int m_init_load_addr; /* 0=No, 1=Yes, 2=Once for repeat mode */
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int m_tms32025_irq_cycles;
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int m_tms32025_dec_cycles;
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PAIR m_oldacc;
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UINT32 m_memaccess;
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int m_icount;
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int m_mHackIgnoreARP; /* special handling for lst, lst1 instructions */
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int m_waiting_for_serial_frame;
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address_space *m_program;
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direct_read_data *m_direct;
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address_space *m_data;
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address_space *m_io;
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UINT16 *m_pgmmap[0x200];
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protected:
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UINT16 *m_datamap[0x200];
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private:
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UINT32 m_debugger_temp;
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inline void CLR0(UINT16 flag);
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inline void SET0(UINT16 flag);
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inline void CLR1(UINT16 flag);
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inline void SET1(UINT16 flag);
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inline void MODIFY_DP(int data);
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inline void MODIFY_PM(int data);
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inline void MODIFY_ARP(int data);
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inline UINT16 M_RDROM(offs_t addr);
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inline void M_WRTROM(offs_t addr, UINT16 data);
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inline UINT16 M_RDRAM(offs_t addr);
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inline void M_WRTRAM(offs_t addr, UINT16 data);
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UINT16 reverse_carry_add(UINT16 arg0, UINT16 arg1 );
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inline void MODIFY_AR_ARP();
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inline void CALCULATE_ADD_CARRY();
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inline void CALCULATE_SUB_CARRY();
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inline void CALCULATE_ADD_OVERFLOW(INT32 addval);
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inline void CALCULATE_SUB_OVERFLOW(INT32 subval);
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inline UINT16 POP_STACK();
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inline void PUSH_STACK(UINT16 data);
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inline void SHIFT_Preg_TO_ALU();
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inline void GETDATA(int shift,int signext);
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inline void PUTDATA(UINT16 data);
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inline void PUTDATA_SST(UINT16 data);
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void opcodes_CE();
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void opcodes_Dx();
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void illegal();
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void abst();
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void add();
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void addc();
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void addh();
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void addk();
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void adds();
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void addt();
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void adlk();
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void adrk();
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void and_();
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void andk();
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void apac();
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void br();
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void bacc();
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void banz();
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void bbnz();
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void bbz();
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void bc();
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void bgez();
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void bgz();
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void bioz();
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void bit();
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void bitt();
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void blez();
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void blkd();
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void blkp();
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void blz();
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void bnc();
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void bnv();
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void bnz();
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void bv();
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void bz();
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void cala();
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void call();
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void cmpl();
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void cmpr();
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void cnfd();
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void cnfp();
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void conf();
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void dint();
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void dmov();
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void eint();
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void fort();
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void idle();
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void in();
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void lac();
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void lack();
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void lact();
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void lalk();
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void lar_ar0();
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void lar_ar1();
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void lar_ar2();
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void lar_ar3();
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void lar_ar4();
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void lar_ar5();
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void lar_ar6();
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void lar_ar7();
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void lark_ar0();
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void lark_ar1();
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void lark_ar2();
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void lark_ar3();
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void lark_ar4();
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void lark_ar5();
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void lark_ar6();
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void lark_ar7();
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void ldp();
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void ldpk();
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void lph();
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void lrlk();
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void lst();
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void lst1();
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void lt();
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void lta();
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void ltd();
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void ltp();
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void lts();
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void mac();
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void macd();
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void mar();
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void mpy();
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void mpya();
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void mpyk();
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void mpys();
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void mpyu();
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void neg();
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void nop();
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void norm();
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void or_();
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void ork();
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void out();
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void pac();
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void pop();
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void popd();
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void pshd();
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void push();
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void rc();
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void ret();
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void rfsm();
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void rhm();
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void rol();
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void ror();
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void rovm();
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void rpt();
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void rptk();
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void rsxm();
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void rtc();
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void rtxm();
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void rxf();
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void sach();
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void sacl();
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void sar_ar0();
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void sar_ar1();
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void sar_ar2();
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void sar_ar3();
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void sar_ar4();
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void sar_ar5();
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void sar_ar6();
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void sar_ar7();
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void sblk();
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void sbrk_ar();
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void sc();
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void sfl();
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void sfr();
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void sfsm();
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void shm();
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void sovm();
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void spac();
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void sph();
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void spl();
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void spm();
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void sqra();
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void sqrs();
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void sst();
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void sst1();
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void ssxm();
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void stc();
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void stxm();
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void sub();
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void subb();
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void subc();
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void subh();
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void subk();
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void subs();
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void subt();
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void sxf();
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void tblr();
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void tblw();
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void trap();
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void xor_();
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void xork();
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void zalh();
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void zalr();
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void zals();
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inline int process_IRQs();
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inline void process_timer(int clocks);
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};
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class tms32026_device : public tms32025_device
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{
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public:
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// construction/destruction
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tms32026_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
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protected:
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virtual void device_reset();
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};
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extern const device_type TMS32025;
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extern const device_type TMS32026;
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#endif /* __TMS32025_H__ */
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