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
02169024	Runs everything that has to happen after midnight	Bond697
0200D440	Swarm calculation and storage	Bond697
02151350	Tick system	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())")	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
0806A674	Read PKM data field	Bond697
0806A518	Get PKM data field	Bond697
0806ACAC	Write PKM data field	Bond697
0806DCB4	Pokerus handler	Bond697
0806DEC4	Pokerus spread	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
08040048	Pokerus handler	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
022263A4	Pokedex data in RAM	Bond697
02162A14	Runs everything that has to happen after midnight	Bond697
0200DD20	Swarm calculation and storage	Bond697
02141440	VRAM transfer task array	Bond697

(All offsets are White offsets.)