hardware.h

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#ifndef _HARDWARE_H
#define _HARDWARE_H
 
#include <types.h>
 
#define __BYTES extern UBYTE
#define __BYTE_REG extern volatile UBYTE
#define __REG extern volatile SFR
 
__BYTES _VRAM[];
__BYTES _VRAM8000[];
__BYTES _VRAM8800[];
__BYTES _VRAM9000[];
__BYTES _SCRN0[];
__BYTES _SCRN1[];
__BYTES _SRAM[];
__BYTES _RAM[];
__BYTES _RAMBANK[];
__BYTES _OAMRAM[];
__BYTE_REG _IO[];
__BYTE_REG _AUD3WAVERAM[];
__BYTE_REG _HRAM[];
 
__BYTE_REG rRAMG;
__BYTE_REG rROMB0;
__BYTE_REG rROMB1;
__BYTE_REG rRAMB;
 
__REG P1_REG;           
#define rP1 P1_REG
 
#define P1F_5 0b00100000
#define P1F_4 0b00010000
#define P1F_3 0b00001000
#define P1F_2 0b00000100
#define P1F_1 0b00000010
#define P1F_0 0b00000001
 
#define P1F_GET_DPAD P1F_5
#define P1F_GET_BTN  P1F_4
#define P1F_GET_NONE (P1F_4 | P1F_5)
 
__REG SB_REG;           
#define rSB SB_REG
__REG SC_REG;           
#define rSC SC_REG
__REG DIV_REG;          
#define rDIV DIV_REG
__REG TIMA_REG;         
#define rTIMA TIMA_REG
__REG TMA_REG;          
#define rTMA TMA_REG
__REG TAC_REG;          
#define rTAC TAC_REG
 
#define TACF_START  0b00000100
#define TACF_STOP   0b00000000
#define TACF_4KHZ   0b00000000
#define TACF_16KHZ  0b00000011
#define TACF_65KHZ  0b00000010
#define TACF_262KHZ 0b00000001
 
#define SIOF_CLOCK_EXT  0b00000000 
#define SIOF_CLOCK_INT  0b00000001 
#define SIOF_SPEED_1X   0b00000000 
#define SIOF_SPEED_32X  0b00000010 
#define SIOF_XFER_START 0b10000000 
#define SIOF_B_CLOCK      0
#define SIOF_B_SPEED      1
#define SIOF_B_XFER_START 7
 
__REG IF_REG;           
#define rIF IF_REG
 
__REG NR10_REG;         
#define rAUD1SWEEP NR10_REG
#define AUD1SWEEP_UP        0b00000000
#define AUD1SWEEP_DOWN      0b00001000
#define AUD1SWEEP_TIME(x)   ((x) << 4)
#define AUD1SWEEP_LENGTH(x) (x)
__REG NR11_REG;         
#define rAUD1LEN NR11_REG
__REG NR12_REG;         
#define rAUD1ENV NR12_REG
__REG NR13_REG;         
#define rAUD1LOW NR13_REG
__REG NR14_REG;         
#define rAUD1HIGH NR14_REG
 
__REG NR21_REG;         
#define rAUD2LEN NR21_REG
__REG NR22_REG;         
#define rAUD2ENV NR22_REG
__REG NR23_REG;         
#define rAUD2LOW NR23_REG
__REG NR24_REG;         
#define rAUD2HIGH NR24_REG
 
__REG NR30_REG;         
#define rAUD3ENA NR30_REG
__REG NR31_REG;         
#define rAUD3LEN NR31_REG
__REG NR32_REG;         
#define rAUD3LEVEL NR32_REG
__REG NR33_REG;         
#define rAUD3LOW NR33_REG
__REG NR34_REG;         
#define rAUD3HIGH NR34_REG
 
__REG NR41_REG;         
#define rAUD4LEN NR41_REG
__REG NR42_REG;         
#define rAUD4ENV NR42_REG
__REG NR43_REG;         
#define rAUD4POLY NR43_REG
#define AUD4POLY_WIDTH_15BIT 0x00
#define AUD4POLY_WIDTH_7BIT  0x08
__REG NR44_REG;         
#define rAUD4GO NR44_REG
 
__REG NR50_REG;         
#define rAUDVOL NR50_REG
 
#define AUDVOL_VOL_LEFT(x)  ((x) << 4)
#define AUDVOL_VOL_RIGHT(x) ((x))
#define AUDVOL_VIN_LEFT         0b10000000
#define AUDVOL_VIN_RIGHT        0b00001000
 
__REG NR51_REG;         
#define rAUDTERM NR51_REG
 
#define AUDTERM_4_LEFT  0b10000000
#define AUDTERM_3_LEFT  0b01000000
#define AUDTERM_2_LEFT  0b00100000
#define AUDTERM_1_LEFT  0b00010000
#define AUDTERM_4_RIGHT 0b00001000
#define AUDTERM_3_RIGHT 0b00000100
#define AUDTERM_2_RIGHT 0b00000010
#define AUDTERM_1_RIGHT 0b00000001
 
__REG NR52_REG;         
#define rAUDENA NR52_REG
 
#define AUDENA_ON    0b10000000
#define AUDENA_OFF   0b00000000
 
__BYTE_REG AUD3WAVE[16];
__BYTE_REG PCM_SAMPLE[16];
 
__REG LCDC_REG;         
#define rLCDC LCDC_REG
 
#if defined(__TARGET_ap)
#define LCDCF_OFF       0b00000000
#define LCDCF_ON        0b00000001
#define LCDCF_WIN9800   0b00000000
#define LCDCF_WIN9C00   0b00000010
#define LCDCF_WINOFF    0b00000000
#define LCDCF_WINON     0b00000100
#define LCDCF_BG8800    0b00000000
#define LCDCF_BG8000    0b00001000
#define LCDCF_BG9800    0b00000000
#define LCDCF_BG9C00    0b00010000
#define LCDCF_OBJ8      0b00000000
#define LCDCF_OBJ16     0b00100000
#define LCDCF_OBJOFF    0b00000000
#define LCDCF_OBJON     0b01000000
#define LCDCF_BGOFF     0b00000000
#define LCDCF_BGON      0b10000000
#define LCDCF_B_ON      0
#define LCDCF_B_WIN9C00 1
#define LCDCF_B_WINON   2
#define LCDCF_B_BG8000  3
#define LCDCF_B_BG9C00  4
#define LCDCF_B_OBJ16   5
#define LCDCF_B_OBJON   6
#define LCDCF_B_BGON    7
#elif defined(__TARGET_duck)
#define LCDCF_OFF       0b00000000
#define LCDCF_ON        0b10000000
#define LCDCF_WIN9800   0b00000000
#define LCDCF_WIN9C00   0b00001000
#define LCDCF_WINOFF    0b00000000
#define LCDCF_WINON     0b00100000
#define LCDCF_BG8800    0b00000000
#define LCDCF_BG8000    0b00010000
#define LCDCF_BG9800    0b00000000
#define LCDCF_BG9C00    0b00000100
#define LCDCF_OBJ8      0b00000000
#define LCDCF_OBJ16     0b00000010
#define LCDCF_OBJOFF    0b00000000
#define LCDCF_OBJON     0b00000001
#define LCDCF_BGOFF     0b00000000
#define LCDCF_BGON      0b01000000
#define LCDCF_B_ON      7
#define LCDCF_B_WIN9C00 3
#define LCDCF_B_WINON   5
#define LCDCF_B_BG8000  4
#define LCDCF_B_BG9C00  2
#define LCDCF_B_OBJ16   1
#define LCDCF_B_OBJON   0
#define LCDCF_B_BGON    6
#else
#define LCDCF_OFF       0b00000000 
#define LCDCF_ON        0b10000000 
#define LCDCF_WIN9800   0b00000000 
#define LCDCF_WIN9C00   0b01000000 
#define LCDCF_WINOFF    0b00000000 
#define LCDCF_WINON     0b00100000 
#define LCDCF_BG8800    0b00000000 
#define LCDCF_BG8000    0b00010000 
#define LCDCF_BG9800    0b00000000 
#define LCDCF_BG9C00    0b00001000 
#define LCDCF_OBJ8      0b00000000 
#define LCDCF_OBJ16     0b00000100 
#define LCDCF_OBJOFF    0b00000000 
#define LCDCF_OBJON     0b00000010 
#define LCDCF_BGOFF     0b00000000 
#define LCDCF_BGON      0b00000001 
#define LCDCF_B_ON      7          
#define LCDCF_B_WIN9C00 6          
#define LCDCF_B_WINON   5          
#define LCDCF_B_BG8000  4          
#define LCDCF_B_BG9C00  3          
#define LCDCF_B_OBJ16   2          
#define LCDCF_B_OBJON   1          
#define LCDCF_B_BGON    0          
#endif
 
__REG STAT_REG;         
#define rSTAT STAT_REG
 
#if defined(__TARGET_ap)
#define STATF_LYC       0b00000010
#define STATF_MODE10    0b00000100
#define STATF_MODE01    0b00001000
#define STATF_MODE00    0b00010000
#define STATF_LYCF      0b00100000
#define STATF_HBL       0b00000000
#define STATF_VBL       0b10000000
#define STATF_OAM       0b01000000
#define STATF_LCD       0b11000000
#define STATF_BUSY      0b01000000
#define STATF_B_LYC     1
#define STATF_B_MODE10  2
#define STATF_B_MODE01  3
#define STATF_B_MODE00  4
#define STATF_B_LYCF    5
#define STATF_B_VBL     7
#define STATF_B_OAM     6
#define STATF_B_BUSY    6
#else
#define STATF_LYC     0b01000000  
#define STATF_MODE10  0b00100000  
#define STATF_MODE01  0b00010000  
#define STATF_MODE00  0b00001000  
#define STATF_LYCF    0b00000100  
#define STATF_HBL     0b00000000  
#define STATF_VBL     0b00000001  
#define STATF_OAM     0b00000010  
#define STATF_LCD     0b00000011  
#define STATF_BUSY    0b00000010  
#define STATF_B_LYC     6         
#define STATF_B_MODE10  5         
#define STATF_B_MODE01  4         
#define STATF_B_MODE00  3         
#define STATF_B_LYCF    2         
#define STATF_B_VBL     0         
#define STATF_B_OAM     1         
#define STATF_B_BUSY    1         
#endif
 
__REG SCY_REG;          
#define rSCY
__REG SCX_REG;          
#define rSCX SCX_REG
__REG LY_REG;           
#define rLY LY_REG
__REG LYC_REG;          
#define rLYC LYC_REG
__REG DMA_REG;          
#define rDMA DMA_REG
__REG BGP_REG;          
#define rBGP BGP_REG
__REG OBP0_REG;         
#define rOBP0 OBP0_REG
__REG OBP1_REG;         
#define rOBP1 OBP1_REG
__REG WY_REG;           
#define rWY WY_REG
__REG WX_REG;           
#define rWX WX_REG
__REG KEY1_REG;         
#define rKEY1 KEY1_REG
#define rSPD  KEY1_REG
 
#define KEY1F_DBLSPEED 0b10000000
#define KEY1F_PREPARE  0b00000001
 
__REG VBK_REG;          
#define rVBK VBK_REG
 
#define VBK_BANK_0      0        
#define VBK_TILES       0        
#define VBK_BANK_1      1        
#define VBK_ATTRIBUTES  1        
#define BKGF_PRI      0b10000000  
#define BKGF_YFLIP    0b01000000  
#define BKGF_XFLIP    0b00100000  
#define BKGF_BANK0    0b00000000  
#define BKGF_BANK1    0b00001000  
#define BKGF_CGB_PAL0 0b00000000  
#define BKGF_CGB_PAL1 0b00000001  
#define BKGF_CGB_PAL2 0b00000010  
#define BKGF_CGB_PAL3 0b00000011  
#define BKGF_CGB_PAL4 0b00000100  
#define BKGF_CGB_PAL5 0b00000101  
#define BKGF_CGB_PAL6 0b00000110  
#define BKGF_CGB_PAL7 0b00000111  
__REG HDMA1_REG;        
#define rHDMA1 HDMA1_REG
__REG HDMA2_REG;        
#define rHDMA2 HDMA2_REG
__REG HDMA3_REG;        
#define rHDMA3 HDMA3_REG
__REG HDMA4_REG;        
#define rHDMA4 HDMA4_REG
__REG HDMA5_REG;        
#define rHDMA5 HDMA5_REG
 
#define HDMA5F_MODE_GP  0b00000000
#define HDMA5F_MODE_HBL 0b10000000
 
#define HDMA5F_BUSY 0b10000000
 
__REG RP_REG;           
#define rRP RP_REG
 
#define RPF_ENREAD   0b11000000
#define RPF_DATAIN   0b00000010
#define RPF_WRITE_HI 0b00000001
#define RPF_WRITE_LO 0b00000000
 
__REG BCPS_REG;         
#define rBCPS BCPS_REG
 
#define BCPSF_AUTOINC 0b10000000
__REG BCPD_REG;         
#define rBCPD BCPD_REG
 
__REG OCPS_REG;         
#define rOCPS OCPS_REG
 
#define OCPSF_AUTOINC 0b10000000
__REG OCPD_REG;         
#define rOCPD OCPD_REG
__REG SVBK_REG;         
#define rSVBK SVBK_REG
#define rSMBK SVBK_REG
 
__REG PCM12_REG;        
#define rPCM12 PCM12_REG
 
__REG PCM34_REG;        
#define rPCM34 PCM34_REG
 
__REG IE_REG;           
#define rIE IE_REG
 
#define IEF_HILO   0b00010000
#define IEF_SERIAL 0b00001000
#define IEF_TIMER  0b00000100
#define IEF_STAT   0b00000010
#define IEF_VBLANK 0b00000001
 
 
/* Square wave duty cycle */
#define AUDLEN_DUTY_12_5 0b00000000
#define AUDLEN_DUTY_25   0b01000000
#define AUDLEN_DUTY_50   0b10000000
#define AUDLEN_DUTY_75   0b11000000
#define AUDLEN_LENGTH(x) (x)
 
/* Audio envelope flags */
#define AUDENV_VOL(x)    ((x) << 4)
#define AUDENV_UP        0b00001000
#define AUDENV_DOWN      0b00000000
#define AUDENV_LENGTH(x) (x)
 
/* Audio trigger flags */
#define AUDHIGH_RESTART    0b10000000
#define AUDHIGH_LENGTH_ON  0b01000000
#define AUDHIGH_LENGTH_OFF 0b00000000
 
/* OAM attributes flags */
#define OAMF_PRI      0b10000000  
#define OAMF_YFLIP    0b01000000  
#define OAMF_XFLIP    0b00100000  
#define OAMF_PAL0     0b00000000  
#define OAMF_PAL1     0b00010000  
#define OAMF_BANK0    0b00000000  
#define OAMF_BANK1    0b00001000  
#define OAMF_CGB_PAL0 0b00000000  
#define OAMF_CGB_PAL1 0b00000001  
#define OAMF_CGB_PAL2 0b00000010  
#define OAMF_CGB_PAL3 0b00000011  
#define OAMF_CGB_PAL4 0b00000100  
#define OAMF_CGB_PAL5 0b00000101  
#define OAMF_CGB_PAL6 0b00000110  
#define OAMF_CGB_PAL7 0b00000111  
#define OAMF_PALMASK 0b00000111   
#define DEVICE_SCREEN_X_OFFSET 0        
#define DEVICE_SCREEN_Y_OFFSET 0        
#define DEVICE_SCREEN_WIDTH 20          
#define DEVICE_SCREEN_HEIGHT 18         
#define DEVICE_SCREEN_BUFFER_WIDTH 32   
#define DEVICE_SCREEN_BUFFER_HEIGHT 32  
#define DEVICE_SCREEN_MAP_ENTRY_SIZE 1  
#define DEVICE_SPRITE_PX_OFFSET_X 8     
#define DEVICE_SPRITE_PX_OFFSET_Y 16    
#define DEVICE_WINDOW_PX_OFFSET_X 7     
#define DEVICE_WINDOW_PX_OFFSET_Y 0     
#define DEVICE_SCREEN_PX_WIDTH (DEVICE_SCREEN_WIDTH * 8)   
#define DEVICE_SCREEN_PX_HEIGHT (DEVICE_SCREEN_HEIGHT * 8) 
#endif