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1 | /*****************************************************************************/\r |
2 | /* FAME Fast and Accurate Motorola 68000 Emulation Core */\r |
3 | /* (c) 2005 Oscar Orallo Pelaez */\r |
4 | /* Version: 1.24 */\r |
5 | /* Date: 08-20-2005 */\r |
6 | /* See FAME.HTML for documentation and license information */\r |
7 | /*****************************************************************************/\r |
8 | \r |
9 | #ifndef __FAME_H__\r |
10 | #define __FAME_H__\r |
11 | \r |
12 | #ifdef __cplusplus\r |
13 | extern "C" {\r |
14 | #endif\r |
15 | \r |
16 | // PicoDrive hacks\r |
17 | #define FAMEC_FETCHBITS 8\r |
18 | #define M68K_FETCHBANK1 (1 << FAMEC_FETCHBITS)\r |
19 | \r |
20 | //#define M68K_RUNNING 0x01\r |
21 | #define M68K_HALTED 0x80\r |
22 | #define M68K_WAITING 0x04\r |
23 | #define M68K_DISABLE 0x20\r |
24 | #define M68K_FAULTED 0x40\r |
25 | #define M68K_EMULATE_GROUP_0 0x02\r |
26 | #define M68K_EMULATE_TRACE 0x08\r |
27 | #define M68K_DO_TRACE 0x10\r |
28 | \r |
29 | \r |
30 | /************************************/\r |
31 | /* General library defines */\r |
32 | /************************************/\r |
33 | \r |
34 | #ifndef M68K_OK\r |
35 | #define M68K_OK 0\r |
36 | #endif\r |
37 | #ifndef M68K_RUNNING\r |
38 | #define M68K_RUNNING 1\r |
39 | #endif\r |
40 | #ifndef M68K_NO_SUP_ADDR_SPACE\r |
41 | #define M68K_NO_SUP_ADDR_SPACE 2\r |
42 | #endif\r |
43 | #ifndef M68K_DOUBLE_BUS_FAULT\r |
44 | #define M68K_DOUBLE_BUS_FAULT -1\r |
45 | #endif\r |
46 | #ifndef M68K_INV_REG\r |
47 | #define M68K_INV_REG -1\r |
48 | #endif\r |
49 | \r |
50 | /* Hardware interrupt state */\r |
51 | \r |
52 | #ifndef M68K_IRQ_LEVEL_ERROR\r |
53 | #define M68K_IRQ_LEVEL_ERROR -1\r |
54 | #endif\r |
55 | #ifndef M68K_IRQ_INV_PARAMS\r |
56 | #define M68K_IRQ_INV_PARAMS -2\r |
57 | #endif\r |
58 | \r |
59 | /* Defines to specify hardware interrupt type */\r |
60 | \r |
61 | #ifndef M68K_AUTOVECTORED_IRQ\r |
62 | #define M68K_AUTOVECTORED_IRQ -1\r |
63 | #endif\r |
64 | #ifndef M68K_SPURIOUS_IRQ\r |
65 | #define M68K_SPURIOUS_IRQ -2\r |
66 | #endif\r |
67 | \r |
68 | #ifndef M68K_AUTO_LOWER_IRQ\r |
69 | #define M68K_AUTO_LOWER_IRQ 1\r |
70 | #endif\r |
71 | #ifndef M68K_MANUAL_LOWER_IRQ\r |
72 | #define M68K_MANUAL_LOWER_IRQ 0\r |
73 | #endif\r |
74 | \r |
75 | /* Defines to specify address space */\r |
76 | \r |
77 | #ifndef M68K_SUP_ADDR_SPACE\r |
78 | #define M68K_SUP_ADDR_SPACE 0\r |
79 | #endif\r |
80 | #ifndef M68K_USER_ADDR_SPACE\r |
81 | #define M68K_USER_ADDR_SPACE 2\r |
82 | #endif\r |
83 | #ifndef M68K_PROG_ADDR_SPACE\r |
84 | #define M68K_PROG_ADDR_SPACE 0\r |
85 | #endif\r |
86 | #ifndef M68K_DATA_ADDR_SPACE\r |
87 | #define M68K_DATA_ADDR_SPACE 1\r |
88 | #endif\r |
89 | \r |
90 | \r |
91 | /*******************/\r |
92 | /* Data definition */\r |
93 | /*******************/\r |
94 | \r |
95 | /* M68K registers */\r |
96 | typedef enum {\r |
97 | M68K_REG_D0=0,\r |
98 | M68K_REG_D1,\r |
99 | M68K_REG_D2,\r |
100 | M68K_REG_D3,\r |
101 | M68K_REG_D4,\r |
102 | M68K_REG_D5,\r |
103 | M68K_REG_D6,\r |
104 | M68K_REG_D7,\r |
105 | M68K_REG_A0,\r |
106 | M68K_REG_A1,\r |
107 | M68K_REG_A2,\r |
108 | M68K_REG_A3,\r |
109 | M68K_REG_A4,\r |
110 | M68K_REG_A5,\r |
111 | M68K_REG_A6,\r |
112 | M68K_REG_A7,\r |
113 | M68K_REG_ASP,\r |
114 | M68K_REG_PC,\r |
115 | M68K_REG_SR\r |
116 | } m68k_register;\r |
117 | \r |
118 | typedef union\r |
119 | {\r |
120 | unsigned char B;\r |
121 | signed char SB;\r |
122 | unsigned short W;\r |
123 | signed short SW;\r |
124 | unsigned int D;\r |
125 | signed int SD;\r |
126 | } famec_union32;\r |
127 | \r |
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128 | /* M68K CPU CONTEXT */\r |
129 | typedef struct\r |
130 | {\r |
131 | unsigned int (*read_byte )(unsigned int a);\r |
132 | unsigned int (*read_word )(unsigned int a);\r |
133 | unsigned int (*read_long )(unsigned int a);\r |
134 | void (*write_byte)(unsigned int a,unsigned char d);\r |
135 | void (*write_word)(unsigned int a,unsigned short d);\r |
136 | void (*write_long)(unsigned int a,unsigned int d);\r |
137 | void (*reset_handler)(void);\r |
138 | void (*iack_handler)(unsigned level);\r |
139 | famec_union32 dreg[8];\r |
140 | famec_union32 areg[8];\r |
141 | unsigned asp;\r |
142 | unsigned pc;\r |
143 | unsigned char interrupts[8];\r |
144 | unsigned short sr;\r |
145 | unsigned short execinfo;\r |
146 | // PD extension\r |
147 | int io_cycle_counter; // cycles left\r |
148 | unsigned int Fetch[M68K_FETCHBANK1];\r |
149 | } M68K_CONTEXT;\r |
150 | \r |
151 | extern M68K_CONTEXT *g_m68kcontext;\r |
152 | \r |
153 | /************************/\r |
154 | /* Function definition */\r |
155 | /************************/\r |
156 | \r |
157 | /* General purpose functions */\r |
158 | void m68k_init(void);\r |
159 | int m68k_reset(void);\r |
160 | int m68k_emulate(int n);\r |
161 | \r |
162 | unsigned m68k_get_pc(M68K_CONTEXT *context);\r |
163 | unsigned m68k_get_register(M68K_CONTEXT *context, m68k_register reg);\r |
164 | unsigned m68k_set_register(M68K_CONTEXT *context, m68k_register reg, unsigned value);\r |
165 | \r |
166 | \r |
167 | #ifdef __cplusplus\r |
168 | }\r |
169 | #endif\r |
170 | \r |
171 | #endif\r |