2 * Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
4 * (c) Copyright 1996 - 2001 Gary Henderson (gary.henderson@ntlworld.com) and
5 * Jerremy Koot (jkoot@snes9x.com)
7 * Super FX C emulator code
8 * (c) Copyright 1997 - 1999 Ivar (ivar@snes9x.com) and
10 * Super FX assembler emulator code (c) Copyright 1998 zsKnight and _Demo_.
12 * DSP1 emulator code (c) Copyright 1998 Ivar, _Demo_ and Gary Henderson.
13 * C4 asm and some C emulation code (c) Copyright 2000 zsKnight and _Demo_.
14 * C4 C code (c) Copyright 2001 Gary Henderson (gary.henderson@ntlworld.com).
16 * DOS port code contains the works of other authors. See headers in
19 * Snes9x homepage: http://www.snes9x.com
21 * Permission to use, copy, modify and distribute Snes9x in both binary and
22 * source form, for non-commercial purposes, is hereby granted without fee,
23 * providing that this license information and copyright notice appear with
24 * all copies and any derived work.
26 * This software is provided 'as-is', without any express or implied
27 * warranty. In no event shall the authors be held liable for any damages
28 * arising from the use of this software.
30 * Snes9x is freeware for PERSONAL USE only. Commercial users should
31 * seek permission of the copyright holders first. Commercial use includes
32 * charging money for Snes9x or software derived from Snes9x.
34 * The copyright holders request that bug fixes and improvements to the code
35 * should be forwarded to them so everyone can benefit from the modifications
38 * Super NES and Super Nintendo Entertainment System are trademarks of
39 * Nintendo Co., Limited and its subsidiary companies.
55 //#include "spc7110.h"
62 extern struct FxInit_s SuperFX;
64 void S9xResetSuperFX ()
66 SuperFX.vFlags = 0; //FX_FLAG_ROM_BUFFER;// | FX_FLAG_ADDRESS_CHECKING;
74 Registers.PC = S9xGetWord (0xFFFC);
85 SetFlags (MemoryFlag | IndexFlag | IRQ | Emulation);
88 CPU.Flags = CPU.Flags & (DEBUG_MODE_FLAG | TRACE_FLAG);
89 CPU.BranchSkip = FALSE;
90 CPU.NMIActive = FALSE;
91 CPU.IRQActive = FALSE;
92 CPU.WaitingForInterrupt = FALSE;
94 CPU.WhichEvent = HBLANK_START_EVENT;
97 CPU.PCAtOpcodeStart = NULL;
98 CPU.WaitAddress = NULL;
101 CPU.NextEvent = Settings.HBlankStart;
103 CPU.MemSpeed = SLOW_ONE_CYCLE;
104 CPU.MemSpeedx2 = SLOW_ONE_CYCLE * 2;
105 CPU.FastROMSpeed = SLOW_ONE_CYCLE;
106 CPU.AutoSaveTimer = 0;
107 CPU.SRAMModified = FALSE;
108 // CPU.NMITriggerPoint = 4; // Set when ROM image loaded
109 CPU.BRKTriggered = FALSE;
110 //CPU.TriedInterleavedMode2 = FALSE; // Reset when ROM image loaded
111 CPU.NMICycleCount = 0;
112 CPU.IRQCycleCount = 0;
113 S9xSetPCBase (Registers.PC);
116 //ICPU.Speed = S9xE1M1X1; // unused
118 //ICPU.S9xOpcodes = S9xOpcodesM1X1; // unused
119 ICPU.CPUExecuting = TRUE;
121 //S9xUnpackStatus(); // not needed
128 if (Settings.SuperFX)
132 ZeroMemory (Memory.FillRAM, 0x8000);
133 memset (Memory.VRAM, 0x00, 0x10000);
134 memset (Memory.RAM, 0x55, 0x20000);
136 /* if(Settings.SPC7110)
156 Settings.Paused = FALSE;
159 CPU.Memory_Map=(uint8*)&(Memory.Map);
160 CPU.Memory_WriteMap=(uint8*)&(Memory.WriteMap);
161 CPU.Memory_MemorySpeed=(uint8*)&(Memory.MemorySpeed);
162 CPU.Memory_BlockIsRAM=(uint8*)&(Memory.BlockIsRAM);
163 CPU.Memory_SRAM=Memory.SRAM;
164 CPU.Memory_BWRAM=Memory.BWRAM;
165 // CPU.Memory_SRAMMask=Memory.SRAMMask;