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Diffstat (limited to 'src/sa1cpu.c')
| -rw-r--r-- | src/sa1cpu.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/src/sa1cpu.c b/src/sa1cpu.c new file mode 100644 index 0000000..eddccfb --- /dev/null +++ b/src/sa1cpu.c @@ -0,0 +1,125 @@ +/*
+ * 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.
+ */
+
+#ifdef USE_SA1
+
+#include "snes9x.h"
+#include "memmap.h"
+#include "ppu.h"
+#include "cpuexec.h"
+
+#include "sa1.h"
+#define CPU SA1
+#define ICPU SA1
+
+#undef Registers
+
+#define Registers SA1Registers
+#define S9xGetByte S9xSA1GetByte
+#define S9xGetWord S9xSA1GetWord
+#define S9xSetByte S9xSA1SetByte
+#define S9xSetWord S9xSA1SetWord
+#define S9xSetPCBase S9xSA1SetPCBase
+#define S9xOpcodesM1X1 S9xSA1OpcodesM1X1
+#define S9xOpcodesM1X0 S9xSA1OpcodesM1X0
+#define S9xOpcodesM0X1 S9xSA1OpcodesM0X1
+#define S9xOpcodesM0X0 S9xSA1OpcodesM0X0
+#define S9xOpcode_IRQ S9xSA1Opcode_IRQ
+#define S9xOpcode_NMI S9xSA1Opcode_NMI
+#define S9xUnpackStatus S9xSA1UnpackStatus
+#define S9xPackStatus S9xSA1PackStatus
+#define S9xFixCycles S9xSA1FixCycles
+#define Immediate8 SA1Immediate8
+#define Immediate16 SA1Immediate16
+#define Relative SA1Relative
+#define RelativeLong SA1RelativeLong
+#define AbsoluteIndexedIndirect SA1AbsoluteIndexedIndirect
+#define AbsoluteIndirectLong SA1AbsoluteIndirectLong
+#define AbsoluteIndirect SA1AbsoluteIndirect
+#define Absolute SA1Absolute
+#define AbsoluteLong SA1AbsoluteLong
+#define Direct SA1Direct
+#define DirectIndirectIndexed SA1DirectIndirectIndexed
+#define DirectIndirectIndexedLong SA1DirectIndirectIndexedLong
+#define DirectIndexedIndirect SA1DirectIndexedIndirect
+#define DirectIndexedX SA1DirectIndexedX
+#define DirectIndexedY SA1DirectIndexedY
+#define AbsoluteIndexedX SA1AbsoluteIndexedX
+#define AbsoluteIndexedY SA1AbsoluteIndexedY
+#define AbsoluteLongIndexedX SA1AbsoluteLongIndexedX
+#define DirectIndirect SA1DirectIndirect
+#define DirectIndirectLong SA1DirectIndirectLong
+#define StackRelative SA1StackRelative
+#define StackRelativeIndirectIndexed SA1StackRelativeIndirectIndexed
+
+//#undef CPU_SHUTDOWN
+#undef VAR_CYCLES
+#define SA1_OPCODES
+
+#include "cpuops.c"
+
+void S9xSA1MainLoop ()
+{
+ int i;
+
+ if (SA1.Flags & IRQ_PENDING_FLAG)
+ {
+ if (SA1.IRQActive)
+ {
+ if (SA1.WaitingForInterrupt)
+ {
+ SA1.WaitingForInterrupt = FALSE;
+ SA1.PC++;
+ }
+ if (!SA1CheckFlag (IRQ))
+ S9xSA1Opcode_IRQ ();
+ }
+ else
+ SA1.Flags &= ~IRQ_PENDING_FLAG;
+ }
+
+ for (i = 0; i < 3 && SA1.Executing; i++)
+ {
+ (*SA1.S9xOpcodes [*SA1.PC++].S9xOpcode) ();
+ }
+}
+
+#endif // USE_SA1
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