FAME + some random stuff added

git-svn-id: file:///home/notaz/opt/svn/PicoDrive@276 be3aeb3a-fb24-0410-a615-afba39da0efa

cpu/fame/fame.h

@@ -0,0 +1,186 @@
+/*****************************************************************************/
+/* FAME Fast and Accurate Motorola 68000 Emulation Core                      */
+/* (c) 2005 Oscar Orallo Pelaez                                              */
+/* Version: 1.24                                                             */
+/* Date: 08-20-2005                                                          */
+/* See FAME.HTML for documentation and license information                   */
+/*****************************************************************************/
+
+#ifndef __FAME_H__
+#define __FAME_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// PicoDrive hacks
+#define FAMEC_FETCHBITS 8
+#define M68K_FETCHBANK1 (1 << FAMEC_FETCHBITS)
+
+//#define M68K_RUNNING    0x01
+#define M68K_HALTED     0x80
+#define M68K_WAITING    0x04
+#define M68K_DISABLE    0x20
+#define M68K_FAULTED    0x40
+#define M68K_EMULATE_GROUP_0  0x02
+#define M68K_EMULATE_TRACE    0x08
+#define M68K_DO_TRACE    0x10
+
+
+/************************************/
+/* General library defines          */
+/************************************/
+
+#ifndef M68K_OK
+    #define M68K_OK 0
+#endif
+#ifndef M68K_RUNNING
+    #define M68K_RUNNING 1
+#endif
+#ifndef M68K_NO_SUP_ADDR_SPACE
+    #define M68K_NO_SUP_ADDR_SPACE 2
+#endif
+#ifndef M68K_DOUBLE_BUS_FAULT
+    #define M68K_DOUBLE_BUS_FAULT -1
+#endif
+#ifndef M68K_INV_REG
+    #define M68K_INV_REG -1
+#endif
+
+/* Hardware interrupt state */
+
+#ifndef M68K_IRQ_LEVEL_ERROR
+    #define M68K_IRQ_LEVEL_ERROR -1
+#endif
+#ifndef M68K_IRQ_INV_PARAMS
+    #define M68K_IRQ_INV_PARAMS -2
+#endif
+
+/* Defines to specify hardware interrupt type */
+
+#ifndef M68K_AUTOVECTORED_IRQ
+    #define M68K_AUTOVECTORED_IRQ -1
+#endif
+#ifndef M68K_SPURIOUS_IRQ
+    #define M68K_SPURIOUS_IRQ -2
+#endif
+
+#ifndef M68K_AUTO_LOWER_IRQ
+	#define M68K_AUTO_LOWER_IRQ 1
+#endif
+#ifndef M68K_MANUAL_LOWER_IRQ
+	#define M68K_MANUAL_LOWER_IRQ 0
+#endif
+
+/* Defines to specify address space */
+
+#ifndef M68K_SUP_ADDR_SPACE
+    #define M68K_SUP_ADDR_SPACE 0
+#endif
+#ifndef M68K_USER_ADDR_SPACE
+    #define M68K_USER_ADDR_SPACE 2
+#endif
+#ifndef M68K_PROG_ADDR_SPACE
+    #define M68K_PROG_ADDR_SPACE 0
+#endif
+#ifndef M68K_DATA_ADDR_SPACE
+    #define M68K_DATA_ADDR_SPACE 1
+#endif
+
+
+/*******************/
+/* Data definition */
+/*******************/
+
+/* M68K registers */
+typedef enum {
+      M68K_REG_D0=0,
+      M68K_REG_D1,
+      M68K_REG_D2,
+      M68K_REG_D3,
+      M68K_REG_D4,
+      M68K_REG_D5,
+      M68K_REG_D6,
+      M68K_REG_D7,
+      M68K_REG_A0,
+      M68K_REG_A1,
+      M68K_REG_A2,
+      M68K_REG_A3,
+      M68K_REG_A4,
+      M68K_REG_A5,
+      M68K_REG_A6,
+      M68K_REG_A7,
+      M68K_REG_ASP,
+      M68K_REG_PC,
+      M68K_REG_SR
+} m68k_register;
+
+typedef union
+{
+	unsigned char B;
+	signed char SB;
+	unsigned short W;
+	signed short SW;
+	unsigned int D;
+	signed int SD;
+} famec_union32;
+
+/* The memory blocks must be in native (Motorola) format */
+struct M68K_PROGRAM {
+	unsigned low_addr;
+	unsigned high_addr;
+	unsigned offset;
+};
+
+/* The memory blocks must be in native (Motorola) format */
+struct M68K_DATA {
+	unsigned low_addr;
+	unsigned high_addr;
+	void    *mem_handler;
+	void    *data;
+};
+
+/* M68K CPU CONTEXT */
+typedef struct
+{
+	unsigned int   (*read_byte )(unsigned int a);
+	unsigned int   (*read_word )(unsigned int a);
+	unsigned int   (*read_long )(unsigned int a);
+	void           (*write_byte)(unsigned int a,unsigned char  d);
+	void           (*write_word)(unsigned int a,unsigned short d);
+	void           (*write_long)(unsigned int a,unsigned int   d);
+	void           (*reset_handler)(void);
+	void           (*iack_handler)(unsigned level);
+	famec_union32  dreg[8];
+	famec_union32  areg[8];
+	unsigned       asp;
+	unsigned       pc;
+	unsigned char  interrupts[8];
+	unsigned short sr;
+	unsigned short execinfo;
+	// PD extension
+	int            io_cycle_counter; // cycles left
+	unsigned int   Fetch[M68K_FETCHBANK1];
+} M68K_CONTEXT;
+
+extern M68K_CONTEXT *g_m68kcontext;
+
+/************************/
+/* Function definition  */
+/************************/
+
+/* General purpose functions */
+void m68k_init(void);
+int  m68k_reset(void);
+int  m68k_emulate(int n);
+
+unsigned m68k_get_pc(M68K_CONTEXT *context);
+unsigned m68k_get_register(M68K_CONTEXT *context, m68k_register reg);
+unsigned m68k_set_register(M68K_CONTEXT *context, m68k_register reg, unsigned value);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif