107 lines
3.2 KiB
C
107 lines
3.2 KiB
C
/* ASG 971222 -- rewrote this interface */
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#ifndef __NECITRF_H_
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#define __NECITRF_H_
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typedef enum { ES, CS, SS, DS } SREGS;
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typedef enum { AW, CW, DW, BW, SP, BP, IX, IY } WREGS;
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typedef enum { AL,AH,CL,CH,DL,DH,BL,BH,SPL,SPH,BPL,BPH,IXL,IXH,IYL,IYH } BREGS;
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#pragma pack(1)
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typedef union
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{
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/* eight general registers */
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uint16_t w[8]; /* viewed as 16 bits registers */
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uint8_t b[16]; /* or as 8 bit registers */
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} necbasicregs;
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typedef struct
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{
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necbasicregs regs;
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uint16_t sregs[4];
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uint16_t ip;
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int32_t SignVal;
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int32_t AuxVal, OverVal, ZeroVal, CarryVal, ParityVal; /* 0 or non-0 valued flags */
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uint32_t TF, IF, DF, MF; /* 0 or 1 valued flags */ /* OB[19.07.99] added Mode Flag V30 */
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uint32_t int_vector;
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uint32_t pending_irq;
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uint32_t nmi_state;
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uint32_t irq_state;
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int (*irq_callback)(int irqline);
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} nec_Regs;
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#pragma pack()
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enum
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{
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NEC_IP=1, NEC_AW, NEC_CW, NEC_DW, NEC_BW, NEC_SP, NEC_BP, NEC_IX, NEC_IY,
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NEC_FLAGS, NEC_ES, NEC_CS, NEC_SS, NEC_DS,
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NEC_VECTOR, NEC_PENDING, NEC_NMI_STATE, NEC_IRQ_STATE
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};
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/* Public variables */
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extern int nec_ICount;
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/* Public functions */
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/*
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#define v20_ICount nec_ICount
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extern void v20_init(void);
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extern void v20_reset(void *param);
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extern void v20_exit(void);
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extern int v20_execute(int cycles);
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extern unsigned v20_get_context(void *dst);
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extern void v20_set_context(void *src);
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extern unsigned v20_get_reg(int regnum);
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extern void v20_set_reg(int regnum, unsigned val);
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extern void v20_set_irq_line(int irqline, int state);
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extern void v20_set_irq_callback(int (*callback)(int irqline));
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extern const char *v20_info(void *context, int regnum);
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extern unsigned v20_dasm(char *buffer, unsigned pc);
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#define v30_ICount nec_ICount
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extern void v30_init(void);
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extern void v30_reset(void *param);
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extern void v30_exit(void);
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extern int v30_execute(int cycles);
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extern unsigned v30_get_context(void *dst);
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extern void v30_set_context(void *src);
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extern unsigned v30_get_reg(int regnum);
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extern void v30_set_reg(int regnum, unsigned val);
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extern void v30_set_irq_line(int irqline, int state);
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extern void v30_set_irq_callback(int (*callback)(int irqline));
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extern const char *v30_info(void *context, int regnum);
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extern unsigned v30_dasm(char *buffer, unsigned pc);
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#define v33_ICount nec_ICount
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extern void v33_init(void);
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extern void v33_reset(void *param);
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extern void v33_exit(void);
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extern int v33_execute(int cycles);
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extern unsigned v33_get_context(void *dst);
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extern void v33_set_context(void *src);
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extern unsigned v33_get_reg(int regnum);
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extern void v33_set_reg(int regnum, unsigned val);
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extern void v33_set_irq_line(int irqline, int state);
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extern void v33_set_irq_callback(int (*callback)(int irqline));
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extern const char *v33_info(void *context, int regnum);
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extern unsigned v33_dasm(char *buffer, unsigned pc);
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*/
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void nec_set_irq_line(int irqline, int state);
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void nec_set_reg(int regnum, uint32_t val);
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int nec_execute(int cycles);
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unsigned nec_get_reg(int regnum);
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void nec_reset (void *param);
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void nec_int(uint16_t vector);
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uint8_t cpu_readport(uint8_t);
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void cpu_writeport(uint32_t, uint8_t);
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#define cpu_readop cpu_readmem20
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#define cpu_readop_arg cpu_readmem20
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void cpu_writemem20(uint32_t, uint8_t);
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uint8_t cpu_readmem20(uint32_t);
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#endif /* __NECITRF_H_ */
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