blob: 8cde84d4ca8bf64c389956763652f65d6c8bbaa0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/*
* 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 _SPC700_H_
#define _SPC700_H_
#ifdef SPCTOOL
#define NO_CHANNEL_STRUCT
#include "spctool/dsp.h"
#include "spctool/spc700.h"
#include "spctool/soundmod.h"
#endif
#define Carry 1
#define Zero 2
#define Interrupt 4
#define HalfCarry 8
#define BreakFlag 16
#define DirectPageFlag 32
#define Overflow 64
#define Negative 128
#define APUClearCarry() (IAPU._Carry = 0)
#define APUSetCarry() (IAPU._Carry = 1)
#define APUSetInterrupt() (IAPU.P |= Interrupt)
#define APUClearInterrupt() (IAPU.P &= ~Interrupt)
#define APUSetHalfCarry() (IAPU.P |= HalfCarry)
#define APUClearHalfCarry() (IAPU.P &= ~HalfCarry)
#define APUSetBreak() (IAPU.P |= BreakFlag)
#define APUClearBreak() (IAPU.P &= ~BreakFlag)
#define APUSetDirectPage() (IAPU.P |= DirectPageFlag)
#define APUClearDirectPage() (IAPU.P &= ~DirectPageFlag)
#define APUSetOverflow() (IAPU._Overflow = 1)
#define APUClearOverflow() (IAPU._Overflow = 0)
#define APUCheckZero() (IAPU._Zero == 0)
#define APUCheckCarry() (IAPU._Carry)
#define APUCheckInterrupt() (IAPU.P & Interrupt)
#define APUCheckHalfCarry() (IAPU.P & HalfCarry)
#define APUCheckBreak() (IAPU.P & BreakFlag)
#define APUCheckDirectPage() (IAPU.P & DirectPageFlag)
#define APUCheckOverflow() (IAPU._Overflow)
#define APUCheckNegative() (IAPU._Zero & 0x80)
//#define APUClearFlags(f) (IAPU.P &= ~(f))
//#define APUSetFlags(f) (IAPU.P |= (f))
//#define APUCheckFlag(f) (IAPU.P & (f))
typedef union
{
#ifdef LSB_FIRST
struct { uint8 A, Y; } B;
#else
struct { uint8 Y, A; } B;
#endif
uint16 W;
uint32 _padder; // make sure this whole thing takes 4 bytes
} YAndA;
struct SAPURegisters{
uint8 P;
YAndA YA;
uint8 X;
uint8 S;
uint16 PC;
};
//EXTERN_C struct SAPURegisters APURegisters;
// Needed by ILLUSION OF GAIA
//#define ONE_APU_CYCLE 14
#define ONE_APU_CYCLE 21
// Needed by all games written by the software company called Human
//#define ONE_APU_CYCLE_HUMAN 17
#define ONE_APU_CYCLE_HUMAN 21
// 1.953us := 1.024065.54MHz
#ifdef SPCTOOL
EXTERN_C int32 ESPC (int32);
#define APU_EXECUTE() \
{ \
int32 l = (CPU.Cycles - CPU.APU_Cycles) / 14; \
if (l > 0) \
{ \
l -= _EmuSPC(l); \
CPU.APU_Cycles += l * 14; \
} \
}
#else
// return cycles left (always negative)
extern "C" int spc700_execute(int cycles);
#endif // SPCTOOL
#endif
|
