LayerOne / LayerOne2017_emu

test

Dependencies:   SDFileSystem mbed-dev

Fork of Nucleo_Ex06_EMU by woodstock .

K6502.h@0:3dac1f1bc9e0, 2016-04-03 (annotated)

Committer:
beaglescout007
Date:
Sun Apr 03 07:45:29 2016 +0000
Revision:
0:3dac1f1bc9e0
Release

Who changed what in which revision?

UserRevisionLine numberNew contents of line
beaglescout007 0:3dac1f1bc9e0 1 /*===================================================================*/
beaglescout007 0:3dac1f1bc9e0 2 /* */
beaglescout007 0:3dac1f1bc9e0 3 /* K6502.h : Header file for K6502 */
beaglescout007 0:3dac1f1bc9e0 4 /* */
beaglescout007 0:3dac1f1bc9e0 5 /* 1999/10/19 Racoon New preparation */
beaglescout007 0:3dac1f1bc9e0 6 /* */
beaglescout007 0:3dac1f1bc9e0 7 /*===================================================================*/
beaglescout007 0:3dac1f1bc9e0 8
beaglescout007 0:3dac1f1bc9e0 9 #ifndef K6502_H_INCLUDED
beaglescout007 0:3dac1f1bc9e0 10 #define K6502_H_INCLUDED
beaglescout007 0:3dac1f1bc9e0 11
beaglescout007 0:3dac1f1bc9e0 12 // Type definition
beaglescout007 0:3dac1f1bc9e0 13 #ifndef DWORD
beaglescout007 0:3dac1f1bc9e0 14 typedef unsigned long DWORD;
beaglescout007 0:3dac1f1bc9e0 15 //typedef unsigned int DWORD;
beaglescout007 0:3dac1f1bc9e0 16 #endif
beaglescout007 0:3dac1f1bc9e0 17
beaglescout007 0:3dac1f1bc9e0 18 #ifndef WORD
beaglescout007 0:3dac1f1bc9e0 19 typedef unsigned short WORD;
beaglescout007 0:3dac1f1bc9e0 20 //typedef unsigned short WORD;
beaglescout007 0:3dac1f1bc9e0 21 #endif
beaglescout007 0:3dac1f1bc9e0 22
beaglescout007 0:3dac1f1bc9e0 23 #ifndef BYTE
beaglescout007 0:3dac1f1bc9e0 24 typedef unsigned char BYTE;
beaglescout007 0:3dac1f1bc9e0 25 //typedef char BYTE;
beaglescout007 0:3dac1f1bc9e0 26 #endif
beaglescout007 0:3dac1f1bc9e0 27
beaglescout007 0:3dac1f1bc9e0 28 #ifndef NULL
beaglescout007 0:3dac1f1bc9e0 29 #define NULL 0
beaglescout007 0:3dac1f1bc9e0 30 #endif
beaglescout007 0:3dac1f1bc9e0 31
beaglescout007 0:3dac1f1bc9e0 32 /* 6502 Flags */
beaglescout007 0:3dac1f1bc9e0 33 #define FLAG_C 0x01
beaglescout007 0:3dac1f1bc9e0 34 #define FLAG_Z 0x02
beaglescout007 0:3dac1f1bc9e0 35 #define FLAG_I 0x04
beaglescout007 0:3dac1f1bc9e0 36 #define FLAG_D 0x08
beaglescout007 0:3dac1f1bc9e0 37 #define FLAG_B 0x10
beaglescout007 0:3dac1f1bc9e0 38 #define FLAG_R 0x20
beaglescout007 0:3dac1f1bc9e0 39 #define FLAG_V 0x40
beaglescout007 0:3dac1f1bc9e0 40 #define FLAG_N 0x80
beaglescout007 0:3dac1f1bc9e0 41
beaglescout007 0:3dac1f1bc9e0 42 /* Stack Address */
beaglescout007 0:3dac1f1bc9e0 43 #define BASE_STACK 0x100
beaglescout007 0:3dac1f1bc9e0 44
beaglescout007 0:3dac1f1bc9e0 45 /* Interrupt Vectors */
beaglescout007 0:3dac1f1bc9e0 46 #define VECTOR_NMI 0xfffa
beaglescout007 0:3dac1f1bc9e0 47 #define VECTOR_RESET 0xfffc
beaglescout007 0:3dac1f1bc9e0 48 #define VECTOR_IRQ 0xfffe
beaglescout007 0:3dac1f1bc9e0 49
beaglescout007 0:3dac1f1bc9e0 50 // NMI Request
beaglescout007 0:3dac1f1bc9e0 51 #define NMI_REQ NMI_State = 0;
beaglescout007 0:3dac1f1bc9e0 52
beaglescout007 0:3dac1f1bc9e0 53 // IRQ Request
beaglescout007 0:3dac1f1bc9e0 54 #define IRQ_REQ IRQ_State = 0;
beaglescout007 0:3dac1f1bc9e0 55
beaglescout007 0:3dac1f1bc9e0 56 // Emulator Operation
beaglescout007 0:3dac1f1bc9e0 57 void K6502_Init();
beaglescout007 0:3dac1f1bc9e0 58 void K6502_Reset();
beaglescout007 0:3dac1f1bc9e0 59 void K6502_Set_Int_Wiring( BYTE byNMI_Wiring, BYTE byIRQ_Wiring );
beaglescout007 0:3dac1f1bc9e0 60 void K6502_Step( register WORD wClocks );
beaglescout007 0:3dac1f1bc9e0 61
beaglescout007 0:3dac1f1bc9e0 62 // I/O Operation (User definition)
beaglescout007 0:3dac1f1bc9e0 63 static inline BYTE K6502_Read( WORD wAddr);
beaglescout007 0:3dac1f1bc9e0 64 static inline WORD K6502_ReadW( WORD wAddr );
beaglescout007 0:3dac1f1bc9e0 65 static inline BYTE K6502_ReadZp( BYTE byAddr );
beaglescout007 0:3dac1f1bc9e0 66 static inline WORD K6502_ReadZpW( BYTE byAddr );
beaglescout007 0:3dac1f1bc9e0 67 static inline BYTE K6502_ReadAbsX();
beaglescout007 0:3dac1f1bc9e0 68 static inline BYTE K6502_ReadAbsY();
beaglescout007 0:3dac1f1bc9e0 69 static inline BYTE K6502_ReadIY();
beaglescout007 0:3dac1f1bc9e0 70
beaglescout007 0:3dac1f1bc9e0 71 static inline void K6502_Write( WORD wAddr, BYTE byData );
beaglescout007 0:3dac1f1bc9e0 72 static inline void K6502_WriteW( WORD wAddr, WORD wData );
beaglescout007 0:3dac1f1bc9e0 73
beaglescout007 0:3dac1f1bc9e0 74 // The state of the IRQ pin
beaglescout007 0:3dac1f1bc9e0 75 extern BYTE IRQ_State;
beaglescout007 0:3dac1f1bc9e0 76
beaglescout007 0:3dac1f1bc9e0 77 // The state of the NMI pin
beaglescout007 0:3dac1f1bc9e0 78 extern BYTE NMI_State;
beaglescout007 0:3dac1f1bc9e0 79
beaglescout007 0:3dac1f1bc9e0 80 #endif /* !K6502_H_INCLUDED */
beaglescout007 0:3dac1f1bc9e0 81
beaglescout007 0:3dac1f1bc9e0 82