--- /dev/null
+/*
+ * Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
+ *
+ * (c) Copyright 1996 - 2001 Gary Henderson (gary.henderson@ntlworld.com) 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.henderson@ntlworld.com).
+ *
+ * DOS port code contains the works of other authors. See headers in
+ * individual files.
+ *
+ * Snes9x homepage: http://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; } PACKING B;
+#else
+ struct { uint8 h,l; } PACKING B;
+#endif
+ uint16 W;
+} ALIGN_BY_ONE pair;
+
+struct SRegisters{
+ uint8 PB;
+ uint8 DB;
+ pair P;
+ pair A;
+ pair D;
+ pair X;
+ pair S;
+ pair Y;
+ uint16 PC;
+} PACKING;
+
+#define Registers CPU.Regs
+//EXTERN_C struct SRegisters Registers;
+
+#endif
projects / drnoksnes / blobdiff