Back to Page
Revision 5 (current)
Edited by Ilari on 9/9/2012 4:38 PM
!!!lsnes memory map
This is list of mappings used by memory manipulation functions.
Not all mappings are active at once. All addresses are in hexadecimal
Codes used in notes:
||Shorthand||Meaning||
|-|Always present|
|RTC|Only present on cartridges with an RTC chip|
|DSP|Only present on cartridges with a DSP chip|
|BSX|BS-X only|
|ST|Sufami Turbo only|
|SGB|Super Game Boy only|
|CART|Presence depends on the cartridge|
|V10|Only present on lsnes rr1-Δ10 and newer|
|V10.1|Only present on lsnes rr1-Δ10ε1 and newer|
!! SNES memory map
||Start Address||End Address||Size||Description||Notes||
|0000 0000|0000 FFFF|64kB|Audio RAM|-|
|0001 0000|0001 FFFF|64kB|Video RAM|-|
|0002 0000|0002 021F|544B|Object Attribute Memory|-|
|0002 1000|0002 11FF|512B|Palette Memory|-|
|0002 2000|0002 2013|20B|S-RTC or SPC-7110 Clock Memory|RTC|
|0002 3000|0002 3FFF|4kB|DSP RAM|DSP|
|007E 0000|007F FFFF|128kB|Main RAM|-|
|0100 0000|01FF FFFF|16MB|SNES Bus|V10|
|1000 0000|(varies)|(varies)|Main cartridge[#1] RAM / SRAM|CART|
|2000 0000|(varies)|(varies)|BS-X RAM|BSX|
| | | |Sufami Turbo Slot A Cartridge RAM / SRAM|ST,CART|
| | | |DMG cartridge RAM / SRAM|SGB,CART|
|3000 0000|(varies)|(varies)|BS-X PRAM|BSX|
| | | |Sufami Turbo Slot B Cartridge RAM / SRAM|ST,CART|
|8000 0000|(varies)|(varies)|Main cartridge[#1] ROM|-|
|9000 0000|(varies)|(varies)|BS-X Flash ROM|BSX|
| | | |Sufami Turbo Slot A Cartridge ROM|ST|
| | | |DMG Cartridge ROM|SGB|
|A000 0000|(varies)|(varies)|Sufami Turbo Slot B Cartridge ROM|ST|
|F000 0000|F000 FFFF|64kB|DSP program ROM|DSP|
|F001 0000|F001 0FFF|4kB|DSP data ROM|DSP|
|1 0000 0000|1 000F FFFF|16MB|Table of area pointers and sizes|V10.1|
|1 0100 0000|(varies)|(varies)|CPU internal state|V10.1|
|1 0200 0000|(varies)|(varies)|PPU internal state|V10.1|
|1 0300 0000|(varies)|(varies)|SMP internal state|V10.1|
|1 0400 0000|(varies)|(varies)|DSP internal state|V10.1|
!! DMG/CGB memory map:
||Start Address||End Address||Size||Description||Notes||
|0000 0000|(varies)|(varies)|Main RAM|-|
|0001 0000|(varies)|(varies)|Video RAM|-|
|0001 8000|(varies)|(varies)|I/O RAM|-|
|0002 0000|(varies)|(varies)|Save RAM|CART|
|8000 0000|(varies)|(varies)|Main cartridge ROM|-|
!! MMIO area (rr1-Δ14 and newer):
||Address||Type||Description||
|FFFF FFFF 0000 0000|Unsigned Qword|Frame counter|
|FFFF FFFF 0000 0008|Unsigned Qword|Movie length|
|FFFF FFFF 0000 0010|Unsigned Qword|Lag counter|
|FFFF FFFF 0000 0018|Unsigned Qword|Rerecord counter|
[#1] In case of BS-X, Sufami Turbo or Super Game Boy, the main cartridge is the adapter cartridge, not the actual game cartridge!