/* * Snes9x - Portable Super Nintendo Entertainment System (TM) emulator. * * (c) Copyright 1996 - 2001 Gary Henderson (gary@daniver.demon.co.uk) and *                           Jerremy Koot (jkoot@snes9x.com) * * Super FX C emulator code  * (c) Copyright 1997 - 1999 Ivar (Ivar@snes9x.com) and *                           Gary Henderson. * Super FX assembler emulator code (c) Copyright 1998 zsKnight and _Demo_. * * DSP1 emulator code (c) Copyright 1998 Ivar, _Demo_ and Gary Henderson. * C4 asm and some C emulation code (c) Copyright 2000 zsKnight and _Demo_. * C4 C code (c) Copyright 2001 Gary Henderson (gary@daniver.demon.co.uk). * * DOS port code contains the works of other authors. See headers in * individual files. * * Snes9x homepage: www.snes9x.com * * Permission to use, copy, modify and distribute Snes9x in both binary and * source form, for non-commercial purposes, is hereby granted without fee, * providing that this license information and copyright notice appear with * all copies and any derived work. * * This software is provided 'as-is', without any express or implied * warranty. In no event shall the authors be held liable for any damages * arising from the use of this software. * * Snes9x is freeware for PERSONAL USE only. Commercial users should * seek permission of the copyright holders first. Commercial use includes * charging money for Snes9x or software derived from Snes9x. * * The copyright holders request that bug fixes and improvements to the code * should be forwarded to them so everyone can benefit from the modifications * in future versions. * * Super NES and Super Nintendo Entertainment System are trademarks of * Nintendo Co., Limited and its subsidiary companies. */#ifndef _65c816_h_#define _65c816_h_#define AL A.B.l#define AH A.B.h#define XL X.B.l#define XH X.B.h#define YL Y.B.l#define YH Y.B.h#define SL S.B.l#define SH S.B.h#define DL D.B.l#define DH D.B.h#define PL P.B.l#define PH P.B.h#define Carry       1#define Zero        2#define IRQ         4#define Decimal     8#define IndexFlag  16#define MemoryFlag 32#define Overflow   64#define Negative  128#define Emulation 256#define ClearCarry() (ICPU._Carry = 0)#define SetCarry() (ICPU._Carry = 1)#define SetZero() (ICPU._Zero = 0)#define ClearZero() (ICPU._Zero = 1)#define SetIRQ() (Registers.PL |= IRQ)#define ClearIRQ() (Registers.PL &= ~IRQ)#define SetDecimal() (Registers.PL |= Decimal)#define ClearDecimal() (Registers.PL &= ~Decimal)#define SetIndex() (Registers.PL |= IndexFlag)#define ClearIndex() (Registers.PL &= ~IndexFlag)#define SetMemory() (Registers.PL |= MemoryFlag)#define ClearMemory() (Registers.PL &= ~MemoryFlag)#define SetOverflow() (ICPU._Overflow = 1)#define ClearOverflow() (ICPU._Overflow = 0)#define SetNegative() (ICPU._Negative = 0x80)#define ClearNegative() (ICPU._Negative = 0)#define CheckZero() (ICPU._Zero == 0)#define CheckCarry() (ICPU._Carry)#define CheckIRQ() (Registers.PL & IRQ)#define CheckDecimal() (Registers.PL & Decimal)#define CheckIndex() (Registers.PL & IndexFlag)#define CheckMemory() (Registers.PL & MemoryFlag)#define CheckOverflow() (ICPU._Overflow)#define CheckNegative() (ICPU._Negative & 0x80)#define CheckEmulation() (Registers.P.W & Emulation)#define ClearFlags(f) (Registers.P.W &= ~(f))#define SetFlags(f)   (Registers.P.W |=  (f))#define CheckFlag(f)  (Registers.PL & (f))typedef union{#ifdef LSB_FIRST    struct { uint8 l,h; } B;#else    struct { uint8 h,l; } B;#endif    uint16 W;} pair;struct SRegisters{    uint8  PB;    uint8  DB;    pair   P;    pair   A;    pair   D;    pair   S;    pair   X;    pair   Y;    uint16 PC;};EXTERN_C struct SRegisters Registers;#endif