1.31 release
[picodrive.git] / cpu / Cyclone / Cyclone.h
CommitLineData
cc68a136 1\r
2// Cyclone 68000 Emulator - Header File\r
3\r
4// Most code (c) Copyright 2004 Dave, All rights reserved.\r
5// Some coding/bugfixing was done by notaz\r
6// Cyclone 68000 is free for non-commercial use.\r
7\r
8// For commercial use, separate licencing terms must be obtained.\r
9\r
10#ifdef __cplusplus\r
11extern "C" {\r
12#endif\r
13\r
14extern int CycloneVer; // Version number of library\r
15\r
16struct Cyclone\r
17{\r
18 unsigned int d[8]; // [r7,#0x00]\r
19 unsigned int a[8]; // [r7,#0x20]\r
20 unsigned int pc; // [r7,#0x40] Memory Base+PC\r
21 unsigned char srh; // [r7,#0x44] Status Register high (T_S__III)\r
22 unsigned char xc; // [r7,#0x45] Extend flag (____??X?)\r
23 unsigned char flags; // [r7,#0x46] Flags (ARM order: ____NZCV) [68k order is XNZVC]\r
24 unsigned char irq; // [r7,#0x47] IRQ level\r
25 unsigned int osp; // [r7,#0x48] Other Stack Pointer (USP/SSP)\r
26 unsigned int vector; // [r7,#0x4c] IRQ vector (temporary)\r
27 unsigned int pad1[2];\r
28 int stopped; // [r7,#0x58] 1 == processor is in stopped state\r
29 int cycles; // [r7,#0x5c]\r
30 int membase; // [r7,#0x60] Memory Base (ARM address minus 68000 address)\r
31 unsigned int (*checkpc)(unsigned int pc); // [r7,#0x64] - Called to recalc Memory Base+pc\r
32 unsigned char (*read8 )(unsigned int a); // [r7,#0x68]\r
33 unsigned short (*read16 )(unsigned int a); // [r7,#0x6c]\r
34 unsigned int (*read32 )(unsigned int a); // [r7,#0x70]\r
35 void (*write8 )(unsigned int a,unsigned char d); // [r7,#0x74]\r
36 void (*write16)(unsigned int a,unsigned short d); // [r7,#0x78]\r
37 void (*write32)(unsigned int a,unsigned int d); // [r7,#0x7c]\r
38 unsigned char (*fetch8 )(unsigned int a); // [r7,#0x80]\r
39 unsigned short (*fetch16)(unsigned int a); // [r7,#0x84]\r
40 unsigned int (*fetch32)(unsigned int a); // [r7,#0x88]\r
41 void (*IrqCallback)(int int_level); // [r7,#0x8c] - optional irq callback function, see config.h\r
42 void (*ResetCallback)(); // [r7,#0x90] - if enabled in config.h, calls this whenever RESET opcode is encountered.\r
43 int (*UnrecognizedCallback)(); // [r7,#0x94] - if enabled in config.h, calls this whenever unrecognized opcode is encountered.\r
44};\r
45\r
46// used only if Cyclone was compiled with compressed jumptable, see config.h\r
47void CycloneInit();\r
48\r
49// run cyclone. Cycles should be specified in context (pcy->cycles)\r
50void CycloneRun(struct Cyclone *pcy);\r
51\r
52// utility functions to get and set SR\r
53void CycloneSetSr(struct Cyclone *pcy, unsigned int sr); // auto-swaps a7<->osp if detects supervisor change\r
54unsigned int CycloneGetSr(struct Cyclone *pcy);\r
55\r
c008977e 56// genesis: if 1, switch to normal TAS handlers\r
57void CycloneSetRealTAS(int use_real);\r
58\r
cc68a136 59#ifdef __cplusplus\r
60} // End of extern "C"\r
61#endif\r