Diff: K6502.h

Revision:

4:53ef91c87d74

Parent:

0:3dac1f1bc9e0

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/K6502.h	Sat May 27 02:17:37 2017 +0000
@@ -0,0 +1,82 @@
+/*===================================================================*/
+/*                                                                   */
+/*  K6502.h : Header file for K6502                                  */
+/*                                                                   */
+/*  1999/10/19  Racoon  New preparation                              */
+/*                                                                   */
+/*===================================================================*/
+
+#ifndef K6502_H_INCLUDED
+#define K6502_H_INCLUDED
+
+// Type definition
+#ifndef DWORD
+typedef unsigned long  DWORD;
+//typedef unsigned int  DWORD;
+#endif
+
+#ifndef WORD
+typedef unsigned short WORD;
+//typedef unsigned short WORD;
+#endif
+
+#ifndef BYTE
+typedef unsigned char  BYTE;
+//typedef char  BYTE;
+#endif
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+/* 6502 Flags */
+#define FLAG_C 0x01
+#define FLAG_Z 0x02
+#define FLAG_I 0x04
+#define FLAG_D 0x08
+#define FLAG_B 0x10
+#define FLAG_R 0x20
+#define FLAG_V 0x40
+#define FLAG_N 0x80
+
+/* Stack Address */
+#define BASE_STACK   0x100
+
+/* Interrupt Vectors */
+#define VECTOR_NMI   0xfffa
+#define VECTOR_RESET 0xfffc
+#define VECTOR_IRQ   0xfffe
+
+// NMI Request
+#define NMI_REQ  NMI_State = 0;
+
+// IRQ Request
+#define IRQ_REQ  IRQ_State = 0;
+
+// Emulator Operation
+void K6502_Init();
+void K6502_Reset();
+void K6502_Set_Int_Wiring( BYTE byNMI_Wiring, BYTE byIRQ_Wiring );
+void K6502_Step( register WORD wClocks );
+
+// I/O Operation (User definition)
+static inline BYTE K6502_Read( WORD wAddr);
+static inline WORD K6502_ReadW( WORD wAddr );
+static inline BYTE K6502_ReadZp( BYTE byAddr );
+static inline WORD K6502_ReadZpW( BYTE byAddr );
+static inline BYTE K6502_ReadAbsX();
+static inline BYTE K6502_ReadAbsY();
+static inline BYTE K6502_ReadIY();
+
+static inline void K6502_Write( WORD wAddr, BYTE byData );
+static inline void K6502_WriteW( WORD wAddr, WORD wData );
+
+// The state of the IRQ pin
+extern BYTE IRQ_State;
+
+// The state of the NMI pin
+extern BYTE NMI_State;
+
+#endif /* !K6502_H_INCLUDED */
+
+