Pecus/libretro-atari800
1
0
Fork 0
mirror of https://github.com/Pecusx/libretro-atari800.git synced 2026-05-21 14:49:36 +02:00
Code Issues Packages Projects Releases Wiki Activity

initial commit

Browse Source
This commit is contained in:
R-type
2015-12-14 14:00:35 +01:00
commit 5a96c0ca66
377 changed files with 149124 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
atari800/src/cpu.h
+77
View File
@@ -0,0 +1,77 @@
#ifndef CPU_H_
#define CPU_H_
#include "config.h"
#ifdef ASAP /* external project, see http://asap.sf.net */
#include "asap_internal.h"
#else
#include "atari.h"
#endif
#define CPU_N_FLAG 0x80
#define CPU_V_FLAG 0x40
#define CPU_B_FLAG 0x10
#define CPU_D_FLAG 0x08
#define CPU_I_FLAG 0x04
#define CPU_Z_FLAG 0x02
#define CPU_C_FLAG 0x01
void CPU_Initialise(void); /* used in the assembler version of cpu.c only */
void CPU_GetStatus(void);
void CPU_PutStatus(void);
void CPU_Reset(void);
void CPU_StateSave(UBYTE SaveVerbose);
void CPU_StateRead(UBYTE SaveVerbose, UBYTE StateVersion);
void CPU_NMI(void);
void CPU_GO(int limit);
#define CPU_GenerateIRQ() (CPU_IRQ = 1)
#ifdef FALCON_CPUASM
extern void CPU_INIT(void);
extern void CPU_GET(void); /* put from CCR, N & Z FLAG into regP */
extern void CPU_PUT(void); /* put from regP into CCR, N & Z FLAG */
#endif
extern UWORD CPU_regPC;
extern UBYTE CPU_regA;
extern UBYTE CPU_regP;
extern UBYTE CPU_regS;
extern UBYTE CPU_regY;
extern UBYTE CPU_regX;
#define CPU_SetN CPU_regP |= CPU_N_FLAG
#define CPU_ClrN CPU_regP &= (~CPU_N_FLAG)
#define CPU_SetV CPU_regP |= CPU_V_FLAG
#define CPU_ClrV CPU_regP &= (~CPU_V_FLAG)
#define CPU_SetB CPU_regP |= CPU_B_FLAG
#define CPU_ClrB CPU_regP &= (~CPU_B_FLAG)
#define CPU_SetD CPU_regP |= CPU_D_FLAG
#define CPU_ClrD CPU_regP &= (~CPU_D_FLAG)
#define CPU_SetI CPU_regP |= CPU_I_FLAG
#define CPU_ClrI CPU_regP &= (~CPU_I_FLAG)
#define CPU_SetZ CPU_regP |= CPU_Z_FLAG
#define CPU_ClrZ CPU_regP &= (~CPU_Z_FLAG)
#define CPU_SetC CPU_regP |= CPU_C_FLAG
#define CPU_ClrC CPU_regP &= (~CPU_C_FLAG)
extern UBYTE CPU_IRQ;
extern void (*CPU_rts_handler)(void);
extern UBYTE CPU_cim_encountered;
#define CPU_REMEMBER_PC_STEPS 64
extern UWORD CPU_remember_PC[CPU_REMEMBER_PC_STEPS];
extern UBYTE CPU_remember_op[CPU_REMEMBER_PC_STEPS][3];
extern unsigned int CPU_remember_PC_curpos;
extern int CPU_remember_xpos[CPU_REMEMBER_PC_STEPS];
#define CPU_REMEMBER_JMP_STEPS 16
extern UWORD CPU_remember_JMP[CPU_REMEMBER_JMP_STEPS];
extern unsigned int CPU_remember_jmp_curpos;
#ifdef MONITOR_PROFILE
extern int CPU_instruction_count[256];
#endif
#endif /* CPU_H_ */