ref: 20ebfd079f1331af5cc4f0edea35163b5b35612d
dir: /constants/hardware_constants.asm/
; From http://nocash.emubase.de/pandocs.htm. DEF GBC EQU $11 ; memory map DEF VRAM_Begin EQU $8000 DEF VRAM_End EQU $a000 DEF SRAM_Begin EQU $a000 DEF SRAM_End EQU $c000 DEF WRAM0_Begin EQU $c000 DEF WRAM0_End EQU $d000 DEF WRAM1_Begin EQU $d000 DEF WRAM1_End EQU $e000 ; hardware registers $ff00-$ff80 (see below) DEF HRAM_Begin EQU $ff80 DEF HRAM_End EQU $ffff ; MBC1 DEF MBC1SRamEnable EQU $0000 DEF MBC1RomBank EQU $2000 DEF MBC1SRamBank EQU $4000 DEF MBC1SRamBankingMode EQU $6000 DEF SRAM_DISABLE EQU $00 DEF SRAM_ENABLE EQU $0a DEF NUM_SRAM_BANKS EQU 4 ; interrupt flags DEF VBLANK EQU 0 DEF LCD_STAT EQU 1 DEF TIMER EQU 2 DEF SERIAL EQU 3 DEF JOYPAD EQU 4 DEF LY_VBLANK EQU 145 ; serial DEF START_TRANSFER_EXTERNAL_CLOCK EQU $80 DEF START_TRANSFER_INTERNAL_CLOCK EQU $81 ; Hardware registers DEF rJOYP EQU $ff00 ; Joypad (R/W) DEF rSB EQU $ff01 ; Serial transfer data (R/W) DEF rSC EQU $ff02 ; Serial Transfer Control (R/W) DEF rSC_ON EQU 7 DEF rSC_CGB EQU 1 DEF rSC_CLOCK EQU 0 DEF rDIV EQU $ff04 ; Divider Register (R/W) DEF rTIMA EQU $ff05 ; Timer counter (R/W) DEF rTMA EQU $ff06 ; Timer Modulo (R/W) DEF rTAC EQU $ff07 ; Timer Control (R/W) DEF rTAC_ON EQU 2 DEF rTAC_4096_HZ EQU 0 DEF rTAC_262144_HZ EQU 1 DEF rTAC_65536_HZ EQU 2 DEF rTAC_16384_HZ EQU 3 DEF rIF EQU $ff0f ; Interrupt Flag (R/W) DEF rNR10 EQU $ff10 ; Channel 1 Sweep register (R/W) DEF rNR11 EQU $ff11 ; Channel 1 Sound length/Wave pattern duty (R/W) DEF rNR12 EQU $ff12 ; Channel 1 Volume Envelope (R/W) DEF rNR13 EQU $ff13 ; Channel 1 Frequency lo (Write Only) DEF rNR14 EQU $ff14 ; Channel 1 Frequency hi (R/W) DEF rNR21 EQU $ff16 ; Channel 2 Sound Length/Wave Pattern Duty (R/W) DEF rNR22 EQU $ff17 ; Channel 2 Volume Envelope (R/W) DEF rNR23 EQU $ff18 ; Channel 2 Frequency lo data (W) DEF rNR24 EQU $ff19 ; Channel 2 Frequency hi data (R/W) DEF rNR30 EQU $ff1a ; Channel 3 Sound on/off (R/W) DEF rNR31 EQU $ff1b ; Channel 3 Sound Length DEF rNR32 EQU $ff1c ; Channel 3 Select output level (R/W) DEF rNR33 EQU $ff1d ; Channel 3 Frequency's lower data (W) DEF rNR34 EQU $ff1e ; Channel 3 Frequency's higher data (R/W) DEF rNR41 EQU $ff20 ; Channel 4 Sound Length (R/W) DEF rNR42 EQU $ff21 ; Channel 4 Volume Envelope (R/W) DEF rNR43 EQU $ff22 ; Channel 4 Polynomial Counter (R/W) DEF rNR44 EQU $ff23 ; Channel 4 Counter/consecutive; Initial (R/W) DEF rNR50 EQU $ff24 ; Channel control / ON-OFF / Volume (R/W) DEF rNR51 EQU $ff25 ; Selection of Sound output terminal (R/W) DEF rNR52 EQU $ff26 ; Sound on/off DEF rWave_0 EQU $ff30 DEF rWave_1 EQU $ff31 DEF rWave_2 EQU $ff32 DEF rWave_3 EQU $ff33 DEF rWave_4 EQU $ff34 DEF rWave_5 EQU $ff35 DEF rWave_6 EQU $ff36 DEF rWave_7 EQU $ff37 DEF rWave_8 EQU $ff38 DEF rWave_9 EQU $ff39 DEF rWave_a EQU $ff3a DEF rWave_b EQU $ff3b DEF rWave_c EQU $ff3c DEF rWave_d EQU $ff3d DEF rWave_e EQU $ff3e DEF rWave_f EQU $ff3f DEF rLCDC EQU $ff40 ; LCD Control (R/W) DEF rLCDC_ENABLE EQU 7 DEF rLCDC_ENABLE_MASK EQU 1 << rLCDC_ENABLE DEF rSTAT EQU $ff41 ; LCDC Status (R/W) DEF rSCY EQU $ff42 ; Scroll Y (R/W) DEF rSCX EQU $ff43 ; Scroll X (R/W) DEF rLY EQU $ff44 ; LCDC Y-Coordinate (R) DEF rLYC EQU $ff45 ; LY Compare (R/W) DEF rDMA EQU $ff46 ; DMA Transfer and Start Address (W) DEF rBGP EQU $ff47 ; BG Palette Data (R/W) - Non CGB Mode Only DEF rOBP0 EQU $ff48 ; Object Palette 0 Data (R/W) - Non CGB Mode Only DEF rOBP1 EQU $ff49 ; Object Palette 1 Data (R/W) - Non CGB Mode Only DEF rWY EQU $ff4a ; Window Y Position (R/W) DEF rWX EQU $ff4b ; Window X Position minus 7 (R/W) DEF rKEY1 EQU $ff4d ; CGB Mode Only - Prepare Speed Switch DEF rVBK EQU $ff4f ; CGB Mode Only - VRAM Bank DEF rHDMA1 EQU $ff51 ; CGB Mode Only - New DMA Source, High DEF rHDMA2 EQU $ff52 ; CGB Mode Only - New DMA Source, Low DEF rHDMA3 EQU $ff53 ; CGB Mode Only - New DMA Destination, High DEF rHDMA4 EQU $ff54 ; CGB Mode Only - New DMA Destination, Low DEF rHDMA5 EQU $ff55 ; CGB Mode Only - New DMA Length/Mode/Start DEF rRP EQU $ff56 ; CGB Mode Only - Infrared Communications Port DEF rBGPI EQU $ff68 ; CGB Mode Only - Background Palette Index DEF rBGPD EQU $ff69 ; CGB Mode Only - Background Palette Data DEF rOBPI EQU $ff6a ; CGB Mode Only - Sprite Palette Index DEF rOBPD EQU $ff6b ; CGB Mode Only - Sprite Palette Data DEF rOPRI EQU $ff6c ; CGB Mode Only - Object Priority Mode DEF rSVBK EQU $ff70 ; CGB Mode Only - WRAM Bank DEF rPCM12 EQU $ff76 ; Channels 1 & 2 Amplitude (R) DEF rPCM34 EQU $ff77 ; Channels 3 & 4 Amplitude (R) DEF rIE EQU $ffff ; Interrupt Enable (R/W)