+++ /dev/null
-\r
-// Cyclone 68000 Emulator - Header File\r
-\r
-// (c) Copyright 2004 Dave, All rights reserved.\r
-// (c) 2005-2007 notaz\r
-// Cyclone 68000 is free for non-commercial use.\r
-\r
-// For commercial use, separate licencing terms must be obtained.\r
-\r
-\r
-#ifndef __CYCLONE_H__\r
-#define __CYCLONE_H__\r
-\r
-#ifdef __cplusplus\r
-extern "C" {\r
-#endif\r
-\r
-extern int CycloneVer; // Version number of library\r
-\r
-struct Cyclone\r
-{\r
- unsigned int d[8]; // [r7,#0x00]\r
- unsigned int a[8]; // [r7,#0x20]\r
- unsigned int pc; // [r7,#0x40] Memory Base (.membase) + 68k PC\r
- unsigned char srh; // [r7,#0x44] Status Register high (T_S__III)\r
- unsigned char unused; // [r7,#0x45] Unused\r
- unsigned char flags; // [r7,#0x46] Flags (ARM order: ____NZCV) [68k order is XNZVC]\r
- unsigned char irq; // [r7,#0x47] IRQ level\r
- unsigned int osp; // [r7,#0x48] Other Stack Pointer (USP/SSP)\r
- unsigned int xc; // [r7,#0x4c] Extend flag (bit29: ??X? _)\r
- unsigned int prev_pc; // [r7,#0x50] Set to start address of currently executed opcode + 2 (if enabled in config.h)\r
- unsigned int jumptab; // [r7,#0x54] Jump table pointer\r
- int state_flags; // [r7,#0x58] bit: 0: stopped state, 1: trace state, 2: activity bit, 3: addr error, 4: fatal halt\r
- int cycles; // [r7,#0x5c] Number of cycles to execute - 1. Updates to cycles left after CycloneRun()\r
- int membase; // [r7,#0x60] Memory Base (ARM address minus 68000 address)\r
- unsigned int (*checkpc)(unsigned int pc); // [r7,#0x64] called to recalc Memory Base+pc\r
- unsigned int (*read8 )(unsigned int a); // [r7,#0x68]\r
- unsigned int (*read16 )(unsigned int a); // [r7,#0x6c]\r
- unsigned int (*read32 )(unsigned int a); // [r7,#0x70]\r
- void (*write8 )(unsigned int a,unsigned char d); // [r7,#0x74]\r
- void (*write16)(unsigned int a,unsigned short d); // [r7,#0x78]\r
- void (*write32)(unsigned int a,unsigned int d); // [r7,#0x7c]\r
- unsigned int (*fetch8 )(unsigned int a); // [r7,#0x80]\r
- unsigned int (*fetch16)(unsigned int a); // [r7,#0x84]\r
- unsigned int (*fetch32)(unsigned int a); // [r7,#0x88]\r
- int (*IrqCallback)(int int_level); // [r7,#0x8c] optional irq callback function, see config.h\r
- void (*ResetCallback)(void); // [r7,#0x90] if enabled in config.h, calls this whenever RESET opcode is encountered.\r
- int (*UnrecognizedCallback)(void); // [r7,#0x94] if enabled in config.h, calls this whenever unrecognized opcode is encountered.\r
- unsigned int internal[6]; // [r7,#0x98] reserved for internal use, do not change.\r
-};\r
-\r
-// Initialize. Used only if Cyclone was compiled with compressed jumptable, see config.h\r
-void CycloneInit(void);\r
-\r
-// Reset\r
-void CycloneReset(struct Cyclone *pcy);\r
-\r
-// Run cyclone. Cycles should be specified in context (pcy->cycles)\r
-void CycloneRun(struct Cyclone *pcy);\r
-\r
-// Utility functions to get and set SR\r
-void CycloneSetSr(struct Cyclone *pcy, unsigned int sr);\r
-unsigned int CycloneGetSr(const struct Cyclone *pcy);\r
-\r
-// Generates irq exception if needed (if pcy->irq > mask).\r
-// Returns cycles used for exception if it was generated, 0 otherwise.\r
-int CycloneFlushIrq(struct Cyclone *pcy);\r
-\r
-// Functions for saving and restoring state.\r
-// CycloneUnpack() uses checkpc(), so it must be initialized.\r
-// save_buffer must point to buffer of 128 (0x80) bytes of size.\r
-void CyclonePack(const struct Cyclone *pcy, void *save_buffer);\r
-void CycloneUnpack(struct Cyclone *pcy, const void *save_buffer);\r
-\r
-// genesis: if 1, switch to normal TAS handlers\r
-void CycloneSetRealTAS(int use_real);\r
-\r
-\r
-// These values are special return values for IrqCallback.\r
-\r
-// Causes an interrupt autovector (0x18 + interrupt level) to be taken.\r
-// This happens in a real 68K if VPA or AVEC is asserted during an interrupt\r
-// acknowledge cycle instead of DTACK (the most common situation).\r
-#define CYCLONE_INT_ACK_AUTOVECTOR -1\r
-\r
-// Causes the spurious interrupt vector (0x18) to be taken\r
-// This happens in a real 68K if BERR is asserted during the interrupt\r
-// acknowledge cycle (i.e. no devices responded to the acknowledge).\r
-#define CYCLONE_INT_ACK_SPURIOUS -2\r
-\r
-\r
-#ifdef __cplusplus\r
-} // End of extern "C"\r
-#endif\r
-\r
-#endif // __CYCLONE_H__\r
-\r