Notable Breakpoints
This page contains RAM addresses to various interesting and useful processes of GBA and DS Pokemon games.
Breakpoints can be set at these addresses.
Inspiration
This page is inspired by tsanth's thread with the same name on GameFAQs: [1]
Pokemon DPP (U)
| DP RAM Address | Pl RAM Address | Description | Discovered by |
|---|---|---|---|
| 02000C54 | 02000C88 | Main() | Bond697 |
| 02000FB0 | 02001034 | Begin Seed Calculation Routine | mingot, arcee |
| 0201B9E0 | 0201D2DC | Set PRNG seed | mingot, arcee |
| 0201B9EC | 0201D2E8 | PRNG | loadingNOW, tsanth |
| 0201BA10 | 0201D30C | Alternate RNG used in some cases: Examples, PID generation for mystery gift pokemon, recalculating a PID after a failed shiny check, number which determines swarm pokemon and great marsh pokemon | SCV |
| 0201BA1C | 0201D318 | Set IRNG Seed | mingot, arcee |
| 02038B70 | 0203E778 | Script Handler | loadingNOW |
| 0203E7D2 | Loads address for a command then branches to that address | SCV | |
| 02042FB4 | 0204BAFC | ARNG call for PID of Wondercard pokemon | SCV, arcee |
| 02042FBA | 0204BB02 | Loads PID from wondercard to r0 | SCV, arcee |
| 02042FC8 | 0204BB10 | First Shiny Check call during the generation of some wondercard pokemon | SCV, arcee |
| 02042FD0 | 0204BB18 | Beginning of loop that makes sure you do not get a shiny wondercard pokemon (in some cases) | SCV, arcee |
| 0204305E | 0204BBA6 | PRNG call for first set of Wondercard pokemon IVs | tsanth, arcee |
| 0204309C | 0204BBE4 | PRNG call for second set of Wondercard pokemon IVs | tsanth, arcee |
| 0205DED4 | Create chain set (not sure about address in tsanth's thread it said 205DED | tsanth, loadingNOW | |
| 0205DF42 | End of Create chain set routine | tsanth, loadingNOW | |
| 0205E40C | 02069B00 | Pokeradar Routine | loadingNOW, tsanth, arcee |
| 02068AAC | 02075E38 | Shiny Check, used to decide what sprite to show for a pokemon and to make sure dynamic PID mystery gift pokemon are not shiny as well as preventing manaphy from hatching shiny in some cases. | SCV, arcee |
| 02075C86 | 128 step RNG advancement | arcee | |
| 0207760E | Poketch check @ daycare screen | arcee | |
| 0206A90C | 02078780 | Begin Calculation of Pokemon ID for alternate forms. | SCV, arcee |
| 020EBC80 | 020E1F6C | Division routine; R0= R0 / R1, R1=R0%R1 | tsanth, SCV |
| 020EAC58 | Pointer to Begin Routine for Script Command 0000 | SCV | |
| 020EB974 | Pointer to Begin Routine for Script Command 0347 | SCV | |
| 021C4D48 | 021BFB14 | PRNG State | Kazo |
| 021C4D4C | 021BFB18 | Mersenne Twister Lookup Table | Kazo |
| 021F4DA8 | Beginning of Honey Tree Routine | SCV | |
| 021F4EE4 | Determines a value from 0-3 to use to determine which list will be used and how the shake value is calculated. If 0, slathering fails and not pokemon will show up. | SCV | |
| 021F4F44 | Determines a number from 0-5 that represents which pokemon will be encountered in a honey tree. | SCV | |
| 021F4F98 | Determines which list will be used by (value determined by 021F4EE4) - 1 (its not done this way, but is equivalent) | SCV | |
| 021F4FAC | Determines a number from 0-3 that represents how much a Honey Tree will shake | SCV | |
| 021F5138 | 021EFF4C | Returns 1 if the current tree being slathered is a Munchlax Tree and 0 otherwise. | SCV |
| 02211E60 | Set GRNG seed | magical | |
| 02211E70 | GRNG | magical | |
| 0223BA10 | Movement Handler Start | tsanth | |
| 0223BA46 | "Am I on grass?" check | tsanth | |
| 0223BAD4 | Wild Encounter Check | tsanth | |
| 0223BB2E | Pair-battle (NPC partner) check | tsanth | |
| 0223BD1C | Movement Handler END | tsanth | |
| 0223C1EE | 022377A2 | Pokeball catching routine | tsanth, arcee |
| 0223C5B8 | Start of Encounter Table Lookup Handler | mingot | |
| 0223C66A | Start of Water (Sweet Scent/Surfing) Encounter Table Lookup Handler | mingot | |
| 0223C6A0 | Start of Water (Fishing) Encounter Table Lookup Handler. There are 3 branches for each of the rods in this routine with different results for old and good/super. | mingot | |
| 022417F4 | Encounter- terrain check | arcee | |
| 02241848 | Encounter- motion mod | arcee | |
| 022479E6 | Call to get ID routine (result in r0) | SCV | |
| 0224E920 | Start of Frozen Handler | SCV |
0224190A - ESV calc 02241B28 - nature calc (probably)
Pokémon HGSS (U)
| RAM Address | Description | Discovered by |
|---|---|---|
| 02000CA4 | Main() | Bond697 |
| 0201FD44 | PRNG advancement routine | Bond697 |
| 0201FD68 | Alternate(simpler) PRNG | Bond697 |
| 0204BFF0 | Wondercard pokemon generation- full routine | Bond697 |
| 02061E2A | NPC movement | arcee |
| 0206C9D8 | International shiny PID generation | Bond697 |
| 02070068 | Shiny check | Bond697 |
| 020D34B0 | Make wondercard PID | Bond697 |
| 020D3A38 | Disable slow IRQ | Bond697 |
| 020D3A4C | Enable slow IRQ | Bond697 |
| 020F2998 | Signed divmod() | ? |
| 020F2BA4 | Unsigned divmod() | ? |
| 0210F6CC | Mersenne Twister lookup table counter | Bond697 |
| 021D15A8 | PRNG State | Kazo |
| 021D15AC | Mersenne Twister lookup table | Kazo |
| 021E19DC | Upper half of wondercard PID | Bond697 |
| 022440A0 | Pickup / Honey Gather handler | magical |
| 02246B24 | Start of Water (Fishing) Encounter Table Lookup Handler [2] | mingot |
| 02246FCC | Fishing decision | arcee |
| 02247228 | Pokéball catching routine | magical |
| 022475F2 | Partial encounter calc- movement modifier | arcee |
| 0224767A | Partial encounter calc- ability/item modifier | arcee |
| 02247698 | Encounter slots | arcee |
| 02247720 | Start of Water (Sweet Scent/Surfing) Encounter Table Lookup Handler [3] | mingot |
| 022477C0 | Headbutt tree encounter slots (Post-National Dex) | magical |
| 022483C4 | Partial encounter calc- roamer modifier | arcee |
Pokémon BW (U)
| RAM Address | Description | Discovered by |
|---|---|---|
| 01FF8000 | ITCM start | Bond697 |
| 01FF80F0 | ARM9 IRQ Handler | Bond697 |
| 02005124 | main() function- infinite main/busy loop that runs the game starts at 02005166 | Bond697 |
| 0200520C | VBlank handler function | Bond697 |
| 020056D0 | Set up both main RNGs for use | Bond697 |
| 020056EC | PRNG advancement routine 1 | Bond697 |
| 02005728 | PRNG advancement routine 2 | Bond697 |
| 0200852C | Store sidtid as uint | Bond697 |
| 0201778C | IV creation routine | Bond697 |
| 02017EF4 | Shiny check routine | Bond697 |
| 02018746 | PID type decision | Bond697 |
| 02018788 | Shiny prevention routine | Bond697 |
| 02019A6C | PKM + RAM encryption | Bond697 |
| 02035F50 | Input handler | Bond697 |
| 0203EFE0 | memcmp()- memory compare: 2 pointers and length of comparison(in bytes)) | Bond697 |
| 0203F04C | Set init MT seed (seed = init rng >> 32) | Bond697 |
| 0203F078 | ARNG(same as gen 4)- build initial MT seed table | Bond697 |
| 0203F0C0 | Mersenne Twister seed table handler | Bond697 |
| 0203F270 | Initial Seed Creation Routine | OmegaDonut |
| 0203F374 | .sav encryption | Bond697 |
| 020592E8 | MD5 hashing routine for wifi | Bond697 |
| 0207FD4C | VRAM bank control handler | Bond697 |
| 02082BE4 | Takes 3 arguments: pointer to start of data write, length(in bytes) of data to write, uint to write multiple times- used constantly for clearing freed memory | Bond697 |
| 02082D5C | memcpy32()- accepts pointer to data start, pointer to copy start, and a length in bytes to copy | Bond697 |
| 02085D54 | DSi Detection Routine | chiizu |
| 02088A98 | Date/time switch statement- used to grab pieces of the date and time and convert them to hex | Bond697 |
| 02088E74 | Convert BCD->hex, for RTC | Bond697 |
| 020946AC | Metrowerks ARM-provided lib rand- used for DS-to-DS handshake | XFR,Bond697 |
| 0209C0C4 | Signed divmod- r0/r1, result in r0; r0%r1, result in r1 | Bond697 |
| 0209C2C8 | Unsigned divmod- r0/r1, result in r0; r0%r1, result in r1 | Bond697 |
| 020A1B50 | Model/texture definitions/positioning data | Bond697 |
| 020AA1C4 | RNG state pointer | Bond697 |
| 02146292 | Pokemon to be encountered | Bond697 |
| 02146974 | Pointer to the struct for the current heap being used | Bond697 |
| 02146A18 | Mersenne Twister seed table pointer | Bond697 |
| 02146A2C | u32 date_time[8] (in hex) | Bond697 |
| 02150920 | SVC mode stack location for card reads/writes | Bond697 |
| 02151260 | SWI/SVC mode stack | Bond697 |
| 02168844 | rand(0xFFFFFFFF) / 0xFFFF | Bond697 |
| 02168A52 | ID generation for Battle Subway partner | Bond697 |
| 021763DC | Inside probability loop | Bond697 |
| 021763F8 | Probability routine- influences starting frame/seed | Bond697 |
| 02176444 | Outside probability loop | Bond697 |
| 02176C6C | Probability table | Bond697 |
| 02193914 | White Forest Trainer # Counter- returns # of trainers in White Forest | Bond697 |
| 021A9370 | Pre-battle setup(battle test, etc) | Bond697 |
| 021A948C | Double battle test | Bond697 |
| 021A9DB2 | 0x80000000 OR PID decision routine | Bond697 |
| 021A9DE8 | ((rand() * 0xFFFF) >> 32) /0x290 -> function is called quite a bit for multiple calcs | Bond697 |
| 021A9DF8 | Fishing decision | arcee |
| 021AA41C | Battle test/decision | Bond697 |
| 021AA43A | Battle test | Bond697 |
| 021AA44C | White Forest Battle Decision Routine- return 0 if no battle, 1 if there's a battle | Bond697 |
| 021AA700 | ((rand() * 0xFFFF) >> 32) /0x290 -> seems to only be used for battle tests | Bond697 |
| 021BC4F8 | Player setup on new game | Bond697 |
| 021BC50A | Make IDs | Bond697 |
| 021C0A6C | Battle routine(setup) | Bond697 |
| 021C390C | Complete breeding routine | Bond697 |
| 021C4048 | International breeding PID generation | Bond697 |
| 021C6C18 | Damage formula routine | Bond697 |
| 021F6388 | Battle PRNG State | Kaphotics |
| 02215374 | Mersenne Twister Lookup Table | Bond697 |
| 02215D34 | Mersenne Twister Lookup Table Counter | Bond697 |
| 02216244 | PRNG State | Bond697 |
| 0221BBD0 | Start of save data in RAM(when saving, all relevant data is written here, then cart RAM, then .sav) | Bond697 |
| 022394E0 | Date/time in hex - uint array | Bond697 |
| 0223C9D0 | Daycare pokemon 1 | Bond697 |
| 0223CAB4 | Daycare pokemon 2 | Bond697 |
| 0223D8CC | BP Counter | Bond697 |
| 0224120C | Wifi RNG | Bond697 |
| 02250030 | Encounter slots in RAM | Bond697 |
| 02257030 | Step Counter | Bond697 |
| 02257034 | Shaking Patch Step Counter | Bond697 |
| 0226DC5A | Move Consecutive Use Counter (Wild Battle) | Kaphotics |
| 0226DC66 | Protect Consecutive Turn Counter (Wild Battle) | Kaphotics |
| 0226E70E | Move Consecutive Use Counter (Trainer Battle) | Kaphotics |
| 0226E71A | Protect Consecutive Turn Counter (Trainer Battle) | Kaphotics |
| 02274302 | Move Decision Dump (Wild Battle) | Kaphotics |
| 022BC734 | Are there trainers in White Forest? (bool) | Bond697 |
| 0233F004 | Egg step counter | ToastPlusOne |
| 02FE0000 | DTCM start | Bond697 |
| 02FE0020 | Interrupt handler lookup table | Bond697 |
| 02FE3780 | Main(user/system mode) stack start | Bond697 |
| 02FE3F80 | IRQ mode stack start | Bond697 |
| 02FE3FC0 | Supervisor mode stack start | Bond697 |
| 02FFFC3C | Vertical blank counter buffer | OmegaDonut |
| 02FFFDE8 | RTC buffer(char rtc[8]) | OmegaDonut |
| 037FBCEC | ARM7 IRQ Handler | Bond697 |
| 02017638 | Pokemon creation routine(makePKM) | Bond697 |
| 02019AB8 | PKM checksum generation | Bond697 |
| 02019C54 | PKM block shuffling | Bond697 |
| 0203F3A0 | Encrypt SAV, battle video, mystery gift | Bond697, Codr, XFR |
| 02150E6C | Graphics bank assignment struct | Bond697 |
| 0214EA70 | Sound archive info struct | Bond697 |
| 02006984 | Play PKM cry- in battle and otherwise | Bond697 |
| 02011298 | Script handler | Bond697 |
| 0224FED4 | Expanded heap memory allocation struct | Bond697 |
Pokémon BW (J)
| RAM Address | Description | Discovered by |
|---|---|---|
| 02005124 | Main() | Bond697 |
| 022151D4 | Mersenne Twister Lookup Table | OmegaDonut |
| 02215B94 | Mersenne Twister Lookup Table Counter | Kaphotics |
| 022160A8 | PRNG State | Kazo |
| 02FFFC3C | Delay | OmegaDonut |
| 02FFFDE8 | Date | OmegaDonut |
(All offsets are White offsets. Black offsets are White offset minus 0x20)
Pokémon Emerald (J)
| RAM Address | Description | Discovered by |
|---|---|---|
| 02024664 | Frame Counter | Kaphotics |
| 03005AE0 | PRNG State | Kaphotics |
| 08000248 | IRQ setup | Bond697 |
| 080003A4 | Main loop | Bond697 |
| 080005E4 | Keypress handler | Bond697 |
| 08000758 | VBlank interrupt | Bond697 |
| 0806F050 | PRNG Advancement Routine | Kaphotics |
| 080B413A | Feebas setup routine on finding a Feebas tile | Bond697 |
| 08296518 | Modulus routine- r0 % r1, return result in r0 | Bond697 |
Pokémon Emerald (U)
| RAM Address | Description | Discovered by |
|---|---|---|
| 02020000 | Timer1 storage on TID creation | Bond697 |
| 020249C0 | Main RNG Frame counter | mingot |
| 03000DC0 | RTC array buffer(char rtc[8]) | Bond697 |
| 03000E20 | Directional movement counters(possibly per frame) | Bond697 |
| 030022E0 | Timer PRNG Initial State (Egg PIDs) | Kaphotics |
| 03002750 | IRQ Handler (user mode) | Bond697 |
| 03005D80 | PRNG State | mingot |
| 03005D84 | Timer RNG Current Seed (Egg PIDs) | Kaphotics |
| 08000248 | IRQ setup | Bond697 |
| 080003A4 | Main loop | Bond697 |
| 080005E4 | Keypress handler | Bond697 |
| 08000738 | VBlank interrupt callback | Bond697 |
| 08000988 | Memblock header setup | Bond697 |
| 08000B1C | Malloc init | Bond697 |
| 08000B38 | Declare memblock(malloc()?) | Bond697 |
| 080B49E2 | Feebas setup routine on finding a Feebas tile | Bond697 |
| 080B4AC8 | Encounter Slot | Bond697 |
| 080B4C74 | Set level | Bond697 |
| 080B4E2A | Sync (bool) | Bond697 |
| 080B4E4C | Nature Setup/Decision (skip if sync() == TRUE) | Bond697 |
| 080B5144 | Battle Test | Bond697 |
| 08067BF8 | Roamer creation start | Bond697 |
| 08067E96 | PKM Building Routine (test temp PIDs, make IVs on success) | Bond697 |
| 0806D088 | Get nature from tempPID(pass tempPID as an arg, return nature value) | Bond697 |
| 0806F5CC | PRNG Advancement Routine | mingot |
| 0817759E | ARNG | Bond697 |
| 082E7BE0 | Modulus routine- r0 % r1, return result in r0 | Bond697 |
| 082E7B68 | Division routine- r0 / r1, return result in r0 | Bond697 |
| 082E7540 | Division routine- r0 / r1, return result in r0 | Bond697 |
| 08070AC4 | Make bred pokemon | Bond697 |
| 080701E0 | Make bred PID | Bond697 |
| 020241F0 | Damage storage- base dmg, etc | Bond697 |
| 08070266 | Inheritance- bugged to not prevent inheriting the same IV multiple times | Bond697 |
| 08070218 | Inheritance check- make sure the same IV isn't inherited multiple times- bugged due to the wrong argument being passed to it | Bond697 |
| 0806AD9C | Set PKM data field | Bond697 |
| 0806A518 | Get PKM data field | Bond697 |
| 0806ACAC | Preliminary set PKM data field | Bond697 |
Pokémon Ruby / Sapphire (U)
| RAM Address | Description | Discovered by |
|---|---|---|
| 02024D1C | Quick Claw Determination | FractalFusion |
| 020287E4 | Egg Creation Step Counter | Kaphotics |
| 03004818 | PRNG State | Multiple |
| 03000460 | RTC | Bond697 |
| 0800024C | Main loop | Bond697 |
| 080003E4 | Initial seed creation | Bond697 |
| 08000428 | Keypress handler | Bond697 |
| 0803AADC | PID creation routine | Bond697 |
| 08040EA4 | Seed set routine, post creation | Bond697 |
| 08040E84 | rand() | Bond697 |
| 08084AA6 | Feebas decision | Bond697 |
| 081E0770 | Interrupts/SWIs | Bond697 |
| 080421B0 | Make bred PKM | Bond697 |
| 080418F0 | Build bred PID | Bond697 |
| 081E0E20 | Division r0/r1, result in r0 | Bond697 |
| 081E0E98 | Modulus r0%r1, result in r0 | Bond697 |
| 08041960 | Inheritance check- insure no duplicate IVs | Bond697 |
Pokémon FireRed / LeafGreen (U)
| RAM Address | Description | Discovered by |
|---|---|---|
| 02020000 | Timer1 storage on initial seed creation | flovv, Bond697 |
| 03005000 | PRNG State | Bond697 |
| 08000558 | Turn on Timer1 @ TM1CNT_H = 0x80 | Bond697 |
| 08000564 | Grab and return the value of Timer1 for use in seeding | Bond697 |
| 08000570 | Turn off Timer1 @ TM1CNT_H = 0x0 and store the grabbed value to 0x02020000 | Bond697 |
| 0803DA54 | Make PKM | Bond697 |
| 08044EC8 | PRNG Advancement Routine | Bond697 |
Pokémon Ruby Debug Version (G)
| RAM Address | Description | Discovered by |
|---|---|---|
| 030048F8 | PRNG state | Bond697 |
| 08045324 | PRNG Advancement Routine(rand()) | Bond697 |
| 08085CEC | ARNG Advancement Routine | Bond697 |
Pokémon B2W2 (J)
| RAM Address | Description | Discovered by |
|---|---|---|
| 02005124 | NitroMain | Bond697 |
| 02005748 | RNG advancement routine 1 | Bond697 |
| 02005784 | RNG advancement routine 2 | Bond697 |
| 020158E8 | Script handler | Bond697 |
| 02043BE8 | Mersenne Twister setup | Bond697 |
| 02043C38 | Mersenne Twister handler | Bond697 |
| 02043DA4 | Seed building function | Bond697 |
| 021A0E30 | Create wild PID | Bond697 |
| 021FE6E8 | Mersenne Twister table | Bond697 |
| 0276FA88 | DSi Mersenne Twister table | Bond697 |
| 021FF0A8 | Mersenne Twister table counter | Bond697 |
| 021FF5D8 | RNG state | Bond697 |
| 02770978 | DSi RNG state | Bond697 |
| 021707DC | Probability table | Bond697 |
| 0216FCE0 | Probability loop | Bond697 |
| 0216FCFC | Inside probability loop | Bond697 |
| 0223B188 | Encounter slots in RAM | Bond697 |
| 021DD22C | Battle RNG state | Bond697 |
| 0221D3A4 | Item slots in RAM | Bond697 |
| 022268D1 | Repel counter | Bond697 |
| 022260A4 | Cash | Bond697 |
| 022229A4 | Total steps | Bond697 |
| 0223AEB4 | Current game(loaded save) step counter | Bond697 |
| 0208D574 | Unsigned divmod | Bond697 |
| 0208D368 | Signed divmod | Bond697 |
| 0209D46C | RNG pointer | Bond697 |
| 021A0E9A | 0x80000000 PID-OR decision | Bond697 |
| 021A1994 | Shaking patch generation | Bond697 |
| 0219FAE4 | Hardcoded trainer name length | Bond697 |
| 0219CB1C | Hardcoded wild pokemon name length | Bond697 |
| 021D9DEC | Data entry setup | Bond697 |
| 021BF190 | Hardcoded starter pokemon name length | Bond697 |
| 02249BD0 | Script info struct | Bond697 |
| 020825B8 | Abort on bad allocation | Bond697 |
| 021BDA68 | Breeding- normal/Shiny Charm/Masuda Method | Bond697 |
| 021412C0 | Mersenne Twister table pointer | Bond697 |
| 02153100 | Scripting system- memory allocation/setup | Bond697 |
| 022581F4 | Wild pokemon PID storage | Bond697 |
| 02181E80 | Hollow pokemon generation | Bond697 |
| 02228B70 | Hollow pokemon data array(u16 hollow[20]) | Bond697 |
| 0200F84C | Is hollow filled | Bond697 |
| 021C8938 | Hollow fill decisions | Bond697 |
| 0214BE7C | SVC stack | Bond697 |
| 0200F8B4 | Get hollow | Bond697 |
| 0200F8BC | Set hollow | Bond697 |
| 02228B98 | Current hollow number | Bond697 |
| 0221DDAC | Slot 1 PID | Bond697 |
| 0221DE88 | Slot 2 PID | Bond697 |
| 0221DF64 | Slot 3 PID | Bond697 |
| 0221E040 | Slot 4 PID | Bond697 |
| 0221E11C | Slot 5 PID | Bond697 |
| 0221E1F8 | Slot 6 PID | Bond697 |
| 0207A998 | DSi check | Bond697 |
| 0214DC24 | Mic status | Bond697 |
| 0200F898 | Set hollow gender | Bond697 |
| 0200F830 | Enable hollow | Bond697 |
| 0200F818 | Set subslot | Bond697 |
| 0200F800 | Set slot | Bond697 |
| 0205780C | Build seed - wifi | Bond697 |
| 02241970 | Wifi RNG state | Bond697 |
| 021BCAC0 | Battle rand | Bond697 |
| 021A5318 | Damage formula | Bond697 |
| 021BCC58 | Base damage | Bond697 |
| 021BCC80 | Damage type modifier | Bond697 |
| 02005234 | Vblank calback | Bond697 |
| 0201C4E0 | PKM creation | Bond697 |
| 0201CDC0 | Shiny check | Bond697 |
| 0201D6E0 | PID creation | Bond697 |
| 0203D988 | Input handler | Bond697 |
| 021BD21C | Breeding | Bond697 |
| 02156410 | Create scripted pokemon | Bond697 |
| 02140B1E | Current special pokemon being created | Bond697 |
| 0201D644 | Special PID creation | Bond697 |
| 02026858 | HM check | Bond697 |
| 0223B3E4 | Expanded heap memory allocation struct | Bond697 |
| 02141324 | G3D info struct | Bond697 |
| 0214340C | G3D global state | Bond697 |
(All offsets are White offsets.)