ref: a66adbcc5c63d133c68bb7a758e8920fde6de2ff
dir: /ram/hram.asm/
SECTION "HRAM", HRAM ; Initialized to 16. ; Decremented each input iteration if the player ; presses the reset sequence (A+B+SEL+START). ; Soft reset when 0 is reached. hSoftReset:: db UNION hBaseTileID:: ; base tile ID to which offsets are added hDexWeight:: hWarpDestinationMap:: hOAMTile:: hROMBankTemp:: hPreviousTileset:: hRLEByteValue:: db hSpriteIndexOrTextID:: ; DisplayTextID's argument hPartyMonIndex:: db hVRAMSlot:: db hFourTileSpriteCount:: hHalveItemPrices:: db NEXTU hItemPrice:: ds 3 ; BCD number NEXTU hSlideAmount:: db ; the total number of tiles being shifted each time the pic slides by one tile hSlidingRegionSize:: db ; -1 = left ; 0 = right hSlideDirection:: db NEXTU hSpriteInterlaceCounter:: hSpriteWidth:: db ; in tiles hSpriteHeight:: db ; in tiles hSpriteOffset:: db NEXTU ; counters for blinking down arrow hDownArrowBlinkCount1:: db hDownArrowBlinkCount2:: db NEXTU hMapStride:: hEastWestConnectedMapWidth:: hNorthSouthConnectionStripWidth:: db hMapWidth:: hNorthSouthConnectedMapWidth:: db NEXTU hSpriteDataOffset:: db hSpriteIndex:: db hSpriteImageIndex:: hSpriteFacingDirection:: hSpriteMovementByte2:: db NEXTU ds 2 hLoadSpriteTemp1:: db hLoadSpriteTemp2:: db NEXTU ds 2 hEnemySpeed:: dw ENDU UNION hSpriteOffset2:: db hOAMBufferOffset:: db hSpriteScreenX:: db hSpriteScreenY:: db NEXTU hFF8F:: db hFF90:: db hFF91:: db hFF92:: db ENDU hTilePlayerStandingOn:: db hSpritePriority:: db UNION ; Multiplication and division variables are meant ; to overlap for back-to-back usage. Big endian. UNION ds 1 hMultiplicand:: ds 3 hMultiplier:: db ds 1 hMultiplyBuffer:: ds 4 NEXTU hProduct:: ds 4 NEXTU hDividend:: ds 4 hDivisor:: db hDivideBuffer:: ds 5 NEXTU hQuotient:: ds 4 hRemainder:: db ENDU NEXTU ; PrintNumber (big endian). hPastLeadingZeros:: db ; last char printed hNumToPrint:: ds 3 hPowerOf10:: ds 3 hSavedNumToPrint:: ds 3 NEXTU hNPCMovementDirections2Index:: hNPCSpriteOffset:: ; distance in steps between NPC and player hNPCPlayerYDistance:: db hNPCPlayerXDistance:: db hFindPathNumSteps:: db ; bit 0: set when the end of the path's Y coordinate matches the target's ; bit 1: set when the end of the path's X coordinate matches the target's ; When both bits are set, the end of the path is at the target's position ; (i.e. the path has been found). hFindPathFlags:: db hFindPathYProgress:: db hFindPathXProgress:: db ; 0 = from player to NPC ; 1 = from NPC to player hNPCPlayerRelativePosPerspective:: db ds 1 ; bit 0: ; 0 = target is to the south or aligned ; 1 = target is to the north ; bit 1: ; 0 = target is to the east or aligned ; 1 = target is to the west hNPCPlayerRelativePosFlags:: db NEXTU hSwapItemID:: db hSwapItemQuantity:: db NEXTU hSignCoordPointer:: dw NEXTU ds 1 hMutateWY:: db hMutateWX:: db NEXTU ; temp value used when swapping bytes or words hSwapTemp:: db hExperience:: ds 3 ; big endian ENDU UNION hMoney:: ds 3 ; BCD number NEXTU ; some code zeroes this for no reason when writing a coin amount hUnusedCoinsByte:: db hCoins:: ds 2 ; BCD number ENDU hDivideBCDDivisor:: hDivideBCDQuotient:: ds 3 ; BCD number hDivideBCDBuffer:: ds 3 ; BCD number ds 1 hSerialReceivedNewData:: db ; $01 = using external clock ; $02 = using internal clock ; $ff = establishing connection hSerialConnectionStatus:: db hSerialIgnoringInitialData:: db hSerialSendData:: db hSerialReceiveData:: db ; these values are copied to rSCX, rSCY, and rWY during V-blank hSCX:: db hSCY:: db hWY:: db hJoyLast:: db hJoyReleased:: db hJoyPressed:: db hJoyHeld:: db hJoy5:: db hJoy6:: db hJoy7:: db hLoadedROMBank:: db hSavedROMBank:: db ; is automatic background transfer during V-blank enabled? ; if nonzero, yes ; if zero, no hAutoBGTransferEnabled:: db ; 00 = top third of background ; 01 = middle third of background ; 02 = bottom third of background hAutoBGTransferPortion:: db ; the destination address of the automatic background transfer hAutoBGTransferDest:: dw hRedrawMapViewRowOffset:: db ; temporary storage for stack pointer during memory transfers that use pop ; to increase speed hSPTemp:: dw ; source address for VBlankCopyBgMap function ; the first byte doubles as the byte that enabled the transfer. ; if it is 0, the transfer is disabled ; if it is not 0, the transfer is enabled ; this means that XX00 is not a valid source address hVBlankCopyBGSource:: dw ; destination address for VBlankCopyBgMap function hVBlankCopyBGDest:: dw ; number of rows for VBlankCopyBgMap to copy hVBlankCopyBGNumRows:: db ; size of VBlankCopy transfer in 16-byte units hVBlankCopySize:: db ; source address for VBlankCopy function hVBlankCopySource:: dw ; destination address for VBlankCopy function hVBlankCopyDest:: dw ; size of source data for VBlankCopyDouble in 8-byte units hVBlankCopyDoubleSize:: db ; source address for VBlankCopyDouble function hVBlankCopyDoubleSource:: dw ; destination address for VBlankCopyDouble function hVBlankCopyDoubleDest:: dw ; controls whether a row or column of 2x2 tile blocks is redrawn in V-blank ; 00 = no redraw ; 01 = redraw column ; 02 = redraw row hRedrawRowOrColumnMode:: db hRedrawRowOrColumnDest:: dw hRandomAdd:: db hRandomSub:: db hFrameCounter:: db ; decremented every V-blank (used for delays) ; V-blank sets this to 0 each time it runs. ; So, by setting it to a nonzero value and waiting for it to become 0 again, ; you can detect that the V-blank handler has run since then. hVBlankOccurred:: db ; Controls which tiles are animated. ; 0 = no animations (breaks Surf) ; 1 = water tile $14 is animated ; 2 = water tile $14 and flower tile $03 are animated hTileAnimations:: db hMovingBGTilesCounter1:: db ds 1 hCurrentSpriteOffset:: db ; multiple of $10 UNION hPlayerFacing:: db hPlayerYCoord:: db hPlayerXCoord:: db NEXTU ; $00 = bag full ; $01 = got item ; $80 = didn't meet required number of owned mons ; $FF = player cancelled hOaksAideResult:: hOaksAideRequirement:: ; required number of owned mons db hOaksAideRewardItem:: db hOaksAideNumMonsOwned:: db NEXTU hVendingMachineItem:: db hVendingMachinePrice:: ds 3 ; BCD number NEXTU hGymGateIndex:: db hGymGateAnswer:: db NEXTU hDexRatingNumMonsSeen:: db hDexRatingNumMonsOwned:: db NEXTU hItemToRemoveID:: db hItemToRemoveIndex:: db NEXTU hItemCounter:: hSavedCoordIndex:: hMissableObjectIndex:: hGymTrashCanRandNumMask:: db NEXTU hFFDB:: db hFFDC:: db ENDU ds 1 hBackupGymGateIndex:: hUnlockedSilphCoDoors:: db ; the first tile ID in a sequence of tile IDs that increase by 1 each step hStartTileID:: db ds 2 hNewPartyLength:: db UNION hDividend2:: db hDivisor2:: db hQuotient2:: db NEXTU hIsHiddenMissableObject:: db ENDU hMapROMBank:: db hSpriteVRAMSlotAndFacing:: db hCoordsInFrontOfPlayerMatch:: hSpriteAnimFrameCounter:: db UNION hSpriteScreenYCoord:: db hSpriteScreenXCoord:: db hSpriteMapYCoord:: db hSpriteMapXCoord:: db NEXTU hItemAlreadyFound:: db ds 2 hDidntFindAnyHiddenObject:: db NEXTU ds 1 hSavedMapTextPtr:: dw ds 1 ENDU ds 4 hWhoseTurn:: db ; 0 on player's turn, 1 on enemy's turn hClearLetterPrintingDelayFlags:: db ds 1 ; bit 0: draw HP fraction to the right of bar instead of below (for party menu) ; bit 1: menu is double spaced hUILayoutFlags:: db hFieldMoveMonMenuTopMenuItemX:: db hJoyInput:: db hDisableJoypadPolling:: db ds 5