diff options
Diffstat (limited to 'src/constants/hardware_constants.asm')
| -rw-r--r-- | src/constants/hardware_constants.asm | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/src/constants/hardware_constants.asm b/src/constants/hardware_constants.asm new file mode 100644 index 0000000..8e926a1 --- /dev/null +++ b/src/constants/hardware_constants.asm @@ -0,0 +1,117 @@ +; From http://nocash.emubase.de/pandocs.htm. + +GBC EQU $11 + +; MBC3 +MBC3SRamEnable EQU $0000 +MBC3RomBank EQU $2000 +MBC3SRamBank EQU $4000 +MBC3LatchClock EQU $6000 +MBC3RTC EQU $a000 + +SRAM_DISABLE EQU $00 +SRAM_ENABLE EQU $0a + +NUM_SRAM_BANKS EQU 4 + +RTC_S EQU $08 ; Seconds 0-59 (0-3Bh) +RTC_M EQU $09 ; Minutes 0-59 (0-3Bh) +RTC_H EQU $0a ; Hours 0-23 (0-17h) +RTC_DL EQU $0b ; Lower 8 bits of Day Counter (0-FFh) +RTC_DH EQU $0c ; Upper 1 bit of Day Counter, Carry Bit, Halt Flag + ; Bit 0 Most significant bit of Day Counter (Bit 8) + ; Bit 6 Halt (0=Active, 1=Stop Timer) + ; Bit 7 Day Counter Carry Bit (1=Counter Overflow) + +; interrupt flags +VBLANK EQU 0 +LCD_STAT EQU 1 +TIMER EQU 2 +SERIAL EQU 3 +JOYPAD EQU 4 + +LY_VBLANK EQU 145 + +; OAM attribute flags +OAM_PALETTE EQU %111 +OAM_TILE_BANK EQU 3 +OAM_OBP_NUM EQU 4 ; Non CGB Mode Only +OAM_X_FLIP EQU 5 +OAM_Y_FLIP EQU 6 +OAM_PRIORITY EQU 7 ; 0: OBJ above BG, 1: OBJ behind BG (colors 1-3) + + +; Hardware registers +rJOYP EQU $ff00 ; Joypad (R/W) +rSB EQU $ff01 ; Serial transfer data (R/W) +rSC EQU $ff02 ; Serial Transfer Control (R/W) +rSC_ON EQU 7 +rSC_CGB EQU 1 +rSC_CLOCK EQU 0 +rDIV EQU $ff04 ; Divider Register (R/W) +rTIMA EQU $ff05 ; Timer counter (R/W) +rTMA EQU $ff06 ; Timer Modulo (R/W) +rTAC EQU $ff07 ; Timer Control (R/W) +rTAC_ON EQU 2 +rTAC_4096_HZ EQU 0 +rTAC_262144_HZ EQU 1 +rTAC_65536_HZ EQU 2 +rTAC_16384_HZ EQU 3 +rIF EQU $ff0f ; Interrupt Flag (R/W) +rNR10 EQU $ff10 ; Channel 1 Sweep register (R/W) +rNR11 EQU $ff11 ; Channel 1 Sound length/Wave pattern duty (R/W) +rNR12 EQU $ff12 ; Channel 1 Volume Envelope (R/W) +rNR13 EQU $ff13 ; Channel 1 Frequency lo (Write Only) +rNR14 EQU $ff14 ; Channel 1 Frequency hi (R/W) +rNR21 EQU $ff16 ; Channel 2 Sound Length/Wave Pattern Duty (R/W) +rNR22 EQU $ff17 ; Channel 2 Volume Envelope (R/W) +rNR23 EQU $ff18 ; Channel 2 Frequency lo data (W) +rNR24 EQU $ff19 ; Channel 2 Frequency hi data (R/W) +rNR30 EQU $ff1a ; Channel 3 Sound on/off (R/W) +rNR31 EQU $ff1b ; Channel 3 Sound Length +rNR32 EQU $ff1c ; Channel 3 Select output level (R/W) +rNR33 EQU $ff1d ; Channel 3 Frequency's lower data (W) +rNR34 EQU $ff1e ; Channel 3 Frequency's higher data (R/W) +rNR41 EQU $ff20 ; Channel 4 Sound Length (R/W) +rNR42 EQU $ff21 ; Channel 4 Volume Envelope (R/W) +rNR43 EQU $ff22 ; Channel 4 Polynomial Counter (R/W) +rNR44 EQU $ff23 ; Channel 4 Counter/consecutive; Inital (R/W) +rNR50 EQU $ff24 ; Channel control / ON-OFF / Volume (R/W) +rNR51 EQU $ff25 ; Selection of Sound output terminal (R/W) +rNR52 EQU $ff26 ; Sound on/off +rLCDC EQU $ff40 ; LCD Control (R/W) +rLCDC_ENABLE EQU 7 +rLCDC_ENABLE_MASK EQU 1 << rLCDC_ENABLE +rSTAT EQU $ff41 ; LCDC Status (R/W) +rSCY EQU $ff42 ; Scroll Y (R/W) +rSCX EQU $ff43 ; Scroll X (R/W) +rLY EQU $ff44 ; LCDC Y-Coordinate (R) +rLYC EQU $ff45 ; LY Compare (R/W) +rDMA EQU $ff46 ; DMA Transfer and Start Address (W) +rBGP EQU $ff47 ; BG Palette Data (R/W) - Non CGB Mode Only +rOBP0 EQU $ff48 ; Object Palette 0 Data (R/W) - Non CGB Mode Only +rOBP1 EQU $ff49 ; Object Palette 1 Data (R/W) - Non CGB Mode Only +rWY EQU $ff4a ; Window Y Position (R/W) +rWX EQU $ff4b ; Window X Position minus 7 (R/W) +rKEY1 EQU $ff4d ; CGB Mode Only - Prepare Speed Switch +rVBK EQU $ff4f ; CGB Mode Only - VRAM Bank +rHDMA1 EQU $ff51 ; CGB Mode Only - New DMA Source, High +rHDMA2 EQU $ff52 ; CGB Mode Only - New DMA Source, Low +rHDMA3 EQU $ff53 ; CGB Mode Only - New DMA Destination, High +rHDMA4 EQU $ff54 ; CGB Mode Only - New DMA Destination, Low +rHDMA5 EQU $ff55 ; CGB Mode Only - New DMA Length/Mode/Start +rRP EQU $ff56 ; CGB Mode Only - Infrared Communications Port +rBGPI EQU $ff68 ; CGB Mode Only - Background Palette Index +rBGPD EQU $ff69 ; CGB Mode Only - Background Palette Data +rOBPI EQU $ff6a ; CGB Mode Only - Sprite Palette Index +rOBPD EQU $ff6b ; CGB Mode Only - Sprite Palette Data +rUNKNOWN1 EQU $ff6c ; (FEh) Bit 0 (Read/Write) - CGB Mode Only +rSVBK EQU $ff70 ; CGB Mode Only - WRAM Bank +rUNKNOWN2 EQU $ff72 ; (00h) - Bit 0-7 (Read/Write) +rUNKNOWN3 EQU $ff73 ; (00h) - Bit 0-7 (Read/Write) +rUNKNOWN4 EQU $ff74 ; (00h) - Bit 0-7 (Read/Write) - CGB Mode Only +rUNKNOWN5 EQU $ff75 ; (8Fh) - Bit 4-6 (Read/Write) +rUNKNOWN6 EQU $ff76 ; (00h) - Always 00h (Read Only) +rUNKNOWN7 EQU $ff77 ; (00h) - Always 00h (Read Only) +rIE EQU $ffff ; Interrupt Enable (R/W) + |