Mario Kart 64 Memory Map

Functions

RAM Addr.	Description
800067C4	Set places (1st, 2nd, etc)
800115F4	Process path data on course load
8002F35C	Controls cpu movement along track while player is moving
800400D0	MIO0 decoder
800404C0	MIO0 encoder
800405D0	TKMK00 decoder
80093134	Print text
8009338C	Print text
80093788	Print text
80099124	Segmented to virtual address converter
80099154	Segmented to virtual address converter (duplicate)
800C4148	Play sound
800D0050	s32 osEepromLongWrite(OSMesgQueue mq, u8 address, u8 buffer, int nbytes);
800D0190	s32 osEepromLongRead(OSMesgQueue mq, u8 address, u8 buffer, int nbytes)
8029D584	Place x with segment 06 offset
8029D60C	Place bushes with segment 06 offset (bowser's castle)
8029D830	Place all item boxes using segment 06 offset
802A7B94	Segment base setter
802A85CC	MIO0 '0F' list related
802A9AF4	Display list unpacker (A0 = segmented address of packed dlist, A1 = length)
802AA918	Course data main loader

ROM	RAM Addr.	Description
-	800DC53C	Game mode selection
-	800DC598	Course timer (float)
-	800DC5A0	Course selection
0E3AD0	800E2ED0	Kart unique settings table, 40 bytes per entry
0F0468	800EF868	ASCII text bank
0F4BB0	?	“RSP Gfx ucode F3DEX 0.95 Yoshitaka Yasumoto Nintendo.”
0F53B0	?	“RSP Gfx ucode F3DLX 0.95 Yoshitaka Yasumoto Nintendo.”
-	80150258	RAM Segments table
-	80165C18	Course RAM objects array? (bowser whomps, luigi hot air balloon)
-	8018EDE4	Character selections
-	8018EDF0	Player count selection
122390	802B8D80	Course data reference table
1232A4	802B9C94	Jump table for segment 7 display list unpacking
-	802BA274	Index for packed dlist commands
12A1F0	?	ASCII text bank (credits)
132B50	-	First MIO0 block
145470	-	Kart texture and palette bank (MIO0 8CI textures, raw RGBA5551 palettes)
641F70	-	Course texture bank
712DC0	-	An MIO0 bank (kart exhaust textures?)
729A30	-	MIO0 Large character face textures
7FA3C0	-	TKMK00 bank
820FC0	-	Last TKMK block in ROM
821D10	-	Two MIO0 blocks
8284D0	-	Course assets MIO0 bank
88CD70	-	Course texture/Seg06 dlist reference bank
88FA10	-	Course MIO0 vertex data & special dlist bank
963EF0	-	Last MIO0 block in ROM
BC5F60	?	M64 music data
BE9160	-	End of ROM, 93856 padding bytes

The RAM Segments table contains the base virtual addresses for each segment and is located at 80150258.

Seg	Description
00	General Purpose; contains the game code addressed as 0x80000000 ex 0x8029E158
01	gGfxPool
02	Variety of fonts, UI textures, animations, vertices, and displaylists
03	Common and Course Specific Textures loaded by func_8029E158. Sets data to segment F for extraction.
04	Course geography vertex data.
05	Course textures
06	Startup logo & Course data consisting of displaylists, textures, models, actor spawn locations, and path data.
07	Unpacked displaylists which reference course mesh data.
08	Unused.
09	Course offsets for texture lists and a jump table consisting of segment 06 display list.
0A	Unused.
0B	Trophy and podium data used during the awards ceremony.
0C	Unused.
0D	Common course data; textures, vertices, displaylists, etc.
0E	Unused.
0F	Temporary buffer for course mesh MIO0 and packed dlists / Course collisions table (44 byte entries)