gba.h

redboy for gba 是BPNS为GBA编写的一个小软件。软件的邹形是BASIC高级语言解释执行器。几经修改和扩展

/*****************************\
* 	gba.h
*	Original by eloist
*	Modified by staringmonkey
*   Modified by Uze
*	Last modified on 29/11/2001
\*****************************/

//////////////////////////////////////////////////////////////////////////////
// GBA.h                                                                    //
//////////////////////////////////////////////////////////////////////////////
#ifndef	_GBA_H
#define	_GBA_H


 
//#ifdef __cplusplus
//extern "C" {
//#endif

/////////////Type Definitions/////////////
typedef unsigned char u8;
typedef unsigned short u16;
typedef unsigned long u32;

typedef volatile unsigned char vu8;
typedef volatile unsigned short vu16;
typedef volatile unsigned long vu32;

typedef const unsigned char const_u8;
typedef const unsigned short const_u16;
typedef const unsigned long const_u32;

typedef signed char s8;
typedef signed short s16;
typedef signed long s32;

typedef unsigned char byte;
typedef unsigned short hword;
typedef unsigned long word;
typedef void (*fp)(void);   //this is the definition you will find in gba.h.  It is just delaring fp to represent a pointer to a function


/////////////////Bits////////////////
#define BIT00 1
#define BIT01 2
#define BIT02 4
#define BIT03 8
#define BIT04 16
#define BIT05 32
#define BIT06 64
#define BIT07 128
#define BIT08 256
#define BIT09 512
#define BIT10 1024
#define BIT11 2048
#define BIT12 4096
#define BIT13 8192
#define BIT14 16384
#define BIT15 32768

///////////////Joystick Keys/////////////////////////////
#define BUTTON_A			0x0001      // A Button
#define BUTTON_B			0x0002      // B Button
#define BUTTON_SELECT	    0x0004      // select button
#define BUTTON_START		0x0008      // START button
#define KEYPAD_RIGHT        0x0010      // Right key
#define KEYPAD_LEFT         0x0020      // Left key
#define KEYPAD_UP           0x0040      // Up key
#define KEYPAD_DOWN         0x0080      // Down key
#define BUTTON_RIGHT	    0x0100      // R shoulder Button
#define BUTTON_LEFT         0x0200		// L shoulder Button

#define TMR_PRESCALER_1CK       0x0000  // Prescaler 1 Clock
#define TMR_PRESCALER_64CK      0x0001  //            64 clocks
#define TMR_PRESCALER_256CK     0x0002  //          256 clocks
#define TMR_PRESCALER_1024CK    0x0003  //        1024 clocks
#define TMR_IF_ENABLE           0x0040  // Interrupt Request Enable
#define TMR_ENABLE              0x0080  // Run Timer

///////////////Interrupts/////////////////////////////
#define INT_VBLANK 0x0001
#define INT_HBLANK 0x0002
#define INT_VCOUNT 0x0004 //you can set the display to generate an interrupt when it reaches a particular line on the screen
#define INT_TIMER0 0x0008
#define INT_TIMER1 0x0010
#define INT_TIMER2 0x0020
#define INT_TIMER3 0x0040
#define INT_COMUNICATION 0x0080 //serial communication interupt
#define INT_DMA0 0x0100
#define INT_DMA1 0x0200
#define INT_DMA2 0x0400
#define INT_DMA3 0x0800
#define INT_KEYBOARD 0x1000
#define INT_CART 0x2000 //the cart can actually generate an interupt
#define INT_ALL 0x4000 //this is just a flag we can set to allow the my function to enable or disable all interrupts. Doesn't actually correspond to a bit in REG_IE

////////////////sound channels/////////////
#define SOUNDINIT			0x8000	// makes the sound restart
#define SOUNDDUTY87			0x0000	//87.5% wave duty
#define SOUNDDUTY75			0x0040	//75% wave duty
#define SOUNDDUTY50			0x0080	//50% wave duty
#define SOUNDDUTY25			0x00C0	//25% wave duty

#define SOUND1PLAYONCE		0x4000	// play sound once
#define SOUND1PLAYLOOP		0x0000	// play sound looped
#define SOUND1INIT			0x8000	// makes the sound restart
#define SOUND1SWEEPSHIFTS(n)	n	// number of sweep shifts (0-7)
#define SOUND1SWEEPINC		0x0000	// sweep add (freq increase)
#define SOUND1SWEEPDEC		0x0008	// sweep dec (freq decrese)
#define SOUND1SWEEPTIME(n)	(n<<4)	// time of sweep (0-7)
#define SOUND1ENVSTEPS(n)	(n<<8)	// envelope steps (0-7)
#define SOUND1ENVINC		0x0800	// envellope increase
#define SOUND1ENVDEC		0x0000	// envellope decrease
#define SOUND1ENVINIT(n)	(n<<12) // initial envelope volume (0-15)


#define SOUND2PLAYONCE		0x4000	// play sound once
#define SOUND2PLAYLOOP		0x0000	// play sound looped
#define SOUND2INIT			0x8000	// makes the sound restart
#define SOUND2ENVSTEPS(n)	(n<<8)	// envelope steps (0-7)
#define SOUND2ENVINC		0x0800	// envellope increase
#define SOUND2ENVDEC		0x0000	// envellope decrease
#define SOUND2ENVINIT(n)	(n<<12) // initial envelope volume (0-15)



#define SOUND3BANK32		0x0000	// Use two banks of 32 steps each
#define SOUND3BANK64		0x0020	// Use one bank of 64 steps
#define SOUND3SETBANK0		0x0000	// Bank to play 0 or 1 (non set bank is written to)
#define SOUND3SETBANK1		0x0040
#define SOUND3PLAY			0x0080	// Output sound

#define SOUND3OUTPUT0		0x0000	// Mute output
#define SOUND3OUTPUT1		0x2000	// Output unmodified
#define SOUND3OUTPUT12		0x4000	// Output 1/2 
#define SOUND3OUTPUT14		0x6000	// Output 1/4 
#define SOUND3OUTPUT34		0x8000  // Output 3/4

#define SOUND3PLAYONCE		0x4000	// Play sound once
#define SOUND3PLAYLOOP		0x0000	// Play sound looped
#define SOUND3INIT			0x8000	// Makes the sound restart


#define SOUND4PLAYONCE		0x4000	// play sound once
#define SOUND4PLAYLOOP		0x0000	// play sound looped
#define SOUND4INIT			0x8000	// makes the sound restart
#define SOUND4ENVSTEPS(n)	(n<<8)	// envelope steps (0-7)
#define SOUND4ENVINC		0x0800	// envellope increase
#define SOUND4ENVDEC		0x0000	// envellope decrease
#define SOUND4ENVINIT(n)	(n<<12) // initial envelope volume (0-15)


#define SOUND4STEPS7		0x0004
#define SOUND4STEPS15		0x0000
#define SOUND4PLAYONCE		0x4000
#define SOUND4PLAYLOOP		0x0000
#define SOUND4INIT			0x8000

/////////////////Registers/////////////////		
#define REG_INTERUPT   *(u32*)0x3007FFC		//Interrupt Register
#define REG_DISPCNT    *(u32*)0x4000000		//Display Control (Mode)
#define REG_DISPCNT_L  *(u16*)0x4000000		//???
#define REG_DISPCNT_H  *(u16*)0x4000002		//???
#define REG_DISPSTAT   *(u16*)0x4000004		//???
#define REG_VCOUNT     *(vu16*)0x4000006		//Vertical Control (Sync)
#define REG_BG0CNT     *(u16*)0x4000008		//Background 0
#define REG_BG1CNT     *(u16*)0x400000A		//Background 1
#define REG_BG2CNT     *(u16*)0x400000C		//Background 2
#define REG_BG3CNT     *(u16*)0x400000E		//Background 3
#define REG_BG0HOFS    *(u16*)0x4000010		//Background 0 Horizontal Offset
#define REG_BG0VOFS    *(u16*)0x4000012		//Background 0 Vertical Offset
#define REG_BG1HOFS    *(u16*)0x4000014		//Background 1 Horizontal Offset
#define REG_BG1VOFS    *(u16*)0x4000016		//Background 1 Vertical Offset
#define REG_BG2HOFS    *(u16*)0x4000018		//Background 2 Horizontal Offset
#define REG_BG2VOFS    *(u16*)0x400001A		//Background 2 Vertical Offset
#define REG_BG3HOFS    *(u16*)0x400001C		//Background 3 Horizontal Offset