mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
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63 lines
2.0 KiB
C
63 lines
2.0 KiB
C
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#ifndef Z80_H
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#define Z80_H
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#include "cpuintrf.h"
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#include "osd_cpu.h"
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enum {
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Z80_PC=1, Z80_SP, Z80_AF, Z80_BC, Z80_DE, Z80_HL,
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Z80_IX, Z80_IY, Z80_AF2, Z80_BC2, Z80_DE2, Z80_HL2,
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Z80_R, Z80_I, Z80_IM, Z80_IFF1, Z80_IFF2, Z80_HALT,
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Z80_NMI_STATE, Z80_IRQ_STATE, Z80_DC0, Z80_DC1, Z80_DC2, Z80_DC3
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};
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enum {
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Z80_TABLE_op,
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Z80_TABLE_cb,
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Z80_TABLE_ed,
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Z80_TABLE_xy,
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Z80_TABLE_xycb,
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Z80_TABLE_ex /* cycles counts for taken jr/jp/call and interrupt latency (rst opcodes) */
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};
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extern int z80_ICount; /* T-state count */
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#define Z80_IGNORE_INT -1 /* Ignore interrupt */
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#define Z80_NMI_INT -2 /* Execute NMI */
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#define Z80_IRQ_INT -1000 /* Execute IRQ */
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extern void z80_reset (void *param);
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extern void z80_exit (void);
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extern void z80_end_timeslice(void);
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extern int z80_execute(int cycles);
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extern void z80_burn(int cycles);
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extern unsigned z80_get_context (void *dst);
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extern void z80_set_context (void *src);
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extern void *z80_get_cycle_table (int which);
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extern void z80_set_cycle_table (int which, void *new_tbl);
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extern unsigned z80_get_pc (void);
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extern void z80_set_pc (unsigned val);
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extern unsigned z80_get_sp (void);
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extern void z80_set_sp (unsigned val);
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extern unsigned z80_get_reg (int regnum);
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extern void z80_set_reg (int regnum, unsigned val);
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extern void z80_set_nmi_line(int state);
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extern void z80_set_irq_line(int irqline, int state);
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extern void z80_set_irq_callback(int (*irq_callback)(int));
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extern void z80_state_save(void *file);
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extern void z80_state_load(void *file);
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extern const char *z80_info(void *context, int regnum);
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extern unsigned z80_dasm(char *buffer, unsigned pc);
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#ifdef MAME_DEBUG
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extern unsigned DasmZ80(char *buffer, unsigned pc);
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#endif
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unsigned int cpu_readport16(unsigned int port);
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void cpu_writeport16(unsigned int port, unsigned int data);
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unsigned int cpu_readmem16(unsigned int address);
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void cpu_writemem16(unsigned int address, unsigned int data);
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#endif
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