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[[Category:File formats]]
[[Category:File formats]]
This page documents the format of NCSD.
This page documents the format of NCSD.
== Overview ==
== Overview ==
There are two known specialisations of the NCSD container format. The CTR Cart Image (CCI) format and the CTR System Update (CSU). CCI is the format of retail game ROM dumps. CSU is used with developer system updates and tools
There are two known specialisations of the NCSD container format. The CTR Cart Image (CCI) format and the CTR System Update (CSU). CCI is the format of retail game ROM dumps. CSU is used with developer system updates and tools
NCSD images start with a NCSD header, followed by up to a maximum of 8 partitions according to spec. The first partition([[NCCH]] 0) usually starts at 0x4000, this is generally the main [[NCCH#CXI|NCCH]] (Executable). The following info on partitions 1, 2, and 7 are only valid for .CCI. The second partition([[NCCH]] 1) contains the game "Manual"(title ID for the .[[NCCH#CFA|CFA]] containing the Manual always starts with '0005'). The third partition([[NCCH]] 2) contains the download play "Child"(The title ID for the .[[NCCH#CFA|CFA]] containing the DLP Child always starts with '0006'). The eighth block([[NCCH]] 7) contains "Update Data"(The title ID for the .[[NCCH#CFA|CFA]] containing the Update Data always starts with '8000') The format of partitions can be determined from the partition FS flags, while the contents can be determined from the partitions flags.
NCSD images start with a NCSD header, followed by up to a maximum of 8 [[NCCH]] partitions. The first partition([[NCCH]] 0) usually starts at 0x4000, this is generally the main [[NCCH#CXI|NCCH]] (Executable). The following info on partitions 1, 2, and 7 are only valid for .CCI. The second partition([[NCCH]] 1) contains the game "Manual"(title ID for the .[[NCCH#CFA|CFA]] containing the Manual always starts with '0005'). The third partition([[NCCH]] 2) contains the download play "Child"(The title ID for the .[[NCCH#CFA|CFA]] containing the DLP Child always starts with '0006'). The eighth block([[NCCH]] 7) contains "Update Data"(The title ID for the .[[NCCH#CFA|CFA]] containing the Update Data always starts with '8000') The format of partitions can be determined from the partition FS flags, while the contents can be determined from the partitions flags.
== NCSD header ==
== NCSD header ==