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Diffstat (limited to 'src/spc700/debug/apu.h')
| -rw-r--r-- | src/spc700/debug/apu.h | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/src/spc700/debug/apu.h b/src/spc700/debug/apu.h new file mode 100644 index 0000000..dd0451c --- /dev/null +++ b/src/spc700/debug/apu.h @@ -0,0 +1,195 @@ +/*
+ * 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 _apu_h_
+#define _apu_h_
+
+#include "spc700.h"
+
+/*
+typedef union
+{
+ struct { uint8 A, Y; } B;
+ uint16 W;
+} YAndA;
+*/
+
+struct SIAPU
+{
+ uint8 *DirectPage; // 0x00
+ uint32 Address; // 0x04 c core only
+ uint8 *WaitAddress1; // 0x08
+ uint8 *WaitAddress2; // 0x0C
+ uint32 WaitCounter; // 0x10
+ uint8 *ShadowRAM; // 0x14
+ uint8 *CachedSamples; // 0x18
+ uint8 _Carry; // 0x1C c core only
+ uint8 _Overflow; // 0x1D c core only
+ uint8 Bit; // 0x1E c core only
+ uint8 pad0;
+ uint32 TimerErrorCounter; // 0x20
+ uint32 Scanline; // 0x24
+ int32 OneCycle; // 0x28
+ int32 TwoCycles; // 0x2C
+ // notaz: reordered and moved everything here, for faster context load/save
+ uint32 *asmJumpTab; // 0x30
+ uint8 *PC; // 0x34
+ YAndA YA; // 0x38 0x0000YYAA
+ uint8 P; // 0x3C flags: NODBHIZC
+ uint8 pad1;
+ uint8 pad2;
+ uint8 _Zero; // 0x3F Z=0, when this!=0; also stores neg flag in &0x80
+ uint8 X; // 0x40
+ uint8 S; // 0x41 stack pointer, default: 0xff
+ uint16 pad3;
+ uint8 *RAM; // 0x44
+ uint8 *ExtraRAM; // 0x48 shortcut to APU.ExtraRAM
+
+ uint16 memread_addr;
+ uint8 memread_data;
+ uint16 memwrite_addr;
+ uint8 memwrite_data;
+ int icount;
+ uint8 opcode;
+ uint16 ya_prev;
+ uint8 x_prev;
+};
+
+struct SAPU
+{
+ int32 Cycles;
+ bool8 ShowROM;
+ uint8 Flags;
+ uint8 KeyedChannels;
+ uint8 OutPorts [4];
+ uint8 DSP [0x80];
+ uint8 ExtraRAM [64];
+ uint16 Timer [3];
+ uint16 TimerTarget [3];
+ bool8 TimerEnabled [3];
+ bool8 TimerValueWritten [3];
+};
+
+EXTERN_C struct SAPU APU;
+EXTERN_C struct SIAPU IAPU;
+EXTERN_C struct SIAPU IAPU2;
+EXTERN_C struct SIAPU *pIAPU;
+
+STATIC inline void S9xAPUUnpackStatus()
+{
+ IAPU._Zero =((IAPU.P & Zero) == 0) | (IAPU.P & Negative);
+ IAPU._Carry = (IAPU.P & Carry);
+ IAPU._Overflow = (IAPU.P & Overflow);
+}
+
+STATIC inline void S9xAPUPackStatus()
+{
+ IAPU.P &= ~(Zero | Negative | Carry | Overflow);
+ if(IAPU._Carry) IAPU.P |= Carry;
+ if(!IAPU._Zero) IAPU.P |= Zero;
+ if(IAPU._Overflow) IAPU.P |= Overflow;
+ if(IAPU._Zero & 0x80) IAPU.P |= Negative;
+}
+
+START_EXTERN_C
+void S9xResetAPU (void);
+bool8 S9xInitAPU ();
+void S9xDeinitAPU ();
+void S9xDecacheSamples ();
+int S9xTraceAPU ();
+int S9xAPUOPrint (char *buffer, uint16 Address);
+void S9xSetAPUControl (uint8 byte);
+void S9xSetAPUDSP (uint8 byte);
+uint8 S9xGetAPUDSP ();
+void S9xSetAPUTimer (uint16 Address, uint8 byte);
+bool8 S9xInitSound (int quality, bool8 stereo, int buffer_size);
+void S9xOpenCloseSoundTracingFile (bool8);
+void S9xPrintAPUState ();
+extern int32 S9xAPUCycles [256]; // Scaled cycle lengths
+extern int32 S9xAPUCycleLengths [256]; // Raw data.
+extern void (*S9xApuOpcodes [256]) (void);
+extern void (*S9xApuOpcodesReal [256]) (void);
+void APUCompare();
+END_EXTERN_C
+
+
+#define APU_VOL_LEFT 0x00
+#define APU_VOL_RIGHT 0x01
+#define APU_P_LOW 0x02
+#define APU_P_HIGH 0x03
+#define APU_SRCN 0x04
+#define APU_ADSR1 0x05
+#define APU_ADSR2 0x06
+#define APU_GAIN 0x07
+#define APU_ENVX 0x08
+#define APU_OUTX 0x09
+
+#define APU_MVOL_LEFT 0x0c
+#define APU_MVOL_RIGHT 0x1c
+#define APU_EVOL_LEFT 0x2c
+#define APU_EVOL_RIGHT 0x3c
+#define APU_KON 0x4c
+#define APU_KOFF 0x5c
+#define APU_FLG 0x6c
+#define APU_ENDX 0x7c
+
+#define APU_EFB 0x0d
+#define APU_PMON 0x2d
+#define APU_NON 0x3d
+#define APU_EON 0x4d
+#define APU_DIR 0x5d
+#define APU_ESA 0x6d
+#define APU_EDL 0x7d
+
+#define APU_C0 0x0f
+#define APU_C1 0x1f
+#define APU_C2 0x2f
+#define APU_C3 0x3f
+#define APU_C4 0x4f
+#define APU_C5 0x5f
+#define APU_C6 0x6f
+#define APU_C7 0x7f
+
+#define APU_SOFT_RESET 0x80
+#define APU_MUTE 0x40
+#define APU_ECHO_DISABLED 0x20
+
+#define FREQUENCY_MASK 0x3fff
+#endif
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