Changes

== ARM11 Kernel Configuration Memory ==

= ARM11 Kernel Configuration Memory =

{| class="wikitable" border="1"

{| class="wikitable" border="1"

!  NAME

!  NAME

This memory page is [[Memory_layout|read-only]] for ARM11 processes.

This memory page is [[Memory_layout|read-only]] for ARM11 processes.

== Shared Memory Page For ARM11 Processes ==

= Shared Memory Page For ARM11 Processes =

{| class="wikitable" border="1"

{| class="wikitable" border="1"

!  NAME

!  NAME

This memory page is normally read-only for ARM11 processes, write-access is [[Memory_layout|determined]] by the process exheader kernel "Shared page writing" flag.

This memory page is normally read-only for ARM11 processes, write-access is [[Memory_layout|determined]] by the process exheader kernel "Shared page writing" flag.

== ARM11 Kernel Config Fields ==

= ARM11 Kernel Config Fields =

=== 0x1FF80000 / 0x1FF80060 ===

== 0x1FF80000 / 0x1FF80060 ==

Unknown, this is normally value 0.

Unknown, this is normally value 0.

=== KERNEL_VERSIONREVISION / FIRM_VERSIONREVISION ===

== KERNEL_VERSIONREVISION / FIRM_VERSIONREVISION ==

This is the version-revision for the currently running [[FIRM]].

This is the version-revision for the currently running [[FIRM]].

=== KERNEL_VERSIONMINOR ===

== KERNEL_VERSIONMINOR ==

This is the version-minor from ((title-version & 0x3FF) >> 4), for the currently running [[FIRM]]. The values from KERNEL_VERSIONMINOR and KERNEL_VERSIONMAJOR can be stored in applications' [[NCCH#CXI|CXI]] exheader.

This is the version-minor from ((title-version & 0x3FF) >> 4), for the currently running [[FIRM]]. The values from KERNEL_VERSIONMINOR and KERNEL_VERSIONMAJOR can be stored in applications' [[NCCH#CXI|CXI]] exheader.

=== FIRM_VERSIONMINOR ===

== FIRM_VERSIONMINOR ==

This is the same as KERNEL_VERSIONMINOR. After [[AM:InstallNATIVEFIRM]] checks FIRM_SYSCOREVER, [[AM:InstallNATIVEFIRM]] then compares FIRM_VERSIONMINOR with the NATIVE_FIRM ((title-version & 0x3FF) >> 4), when the latter is larger than FIRM_VERSIONMINOR [[AM:InstallNATIVEFIRM]] will trigger a [[FIRM]] install.

This is the same as KERNEL_VERSIONMINOR. After [[AM:InstallNATIVEFIRM]] checks FIRM_SYSCOREVER, [[AM:InstallNATIVEFIRM]] then compares FIRM_VERSIONMINOR with the NATIVE_FIRM ((title-version & 0x3FF) >> 4), when the latter is larger than FIRM_VERSIONMINOR [[AM:InstallNATIVEFIRM]] will trigger a [[FIRM]] install.

=== KERNEL_VERSIONMAJOR / FIRM_VERSIONMAJOR ===

== KERNEL_VERSIONMAJOR / FIRM_VERSIONMAJOR ==

This is the version-major for the currently running [[FIRM]].

This is the version-major for the currently running [[FIRM]].

=== UPDATEFLAG ===

== UPDATEFLAG ==

Normally this flag is zero, however when the ARM11 kernel is booting it will set this flag to 1, if the following [[PAD]] buttons are pressed: L, R, A, Up. When this flag is set, the system will launch the [[System_Settings#System_Updater|System Updater]] title instead of displaying the [[Home Menu]].

Normally this flag is zero, however when the ARM11 kernel is booting it will set this flag to 1, if the following [[PAD]] buttons are pressed: L, R, A, Up. When this flag is set, the system will launch the [[System_Settings#System_Updater|System Updater]] title instead of displaying the [[Home Menu]].

=== NSTID ===

== NSTID ==

This field contains the titleID of the first title to launch from CTR-NAND after the [[FIRM]] system processes are loaded. The [[Process Manager Ports|PM]] module launches this title. If this field titleID is all-zero, the system will not attempt to launch the title. The regular ARM11 kernel sets this to the regular [[NS]] titleID, while the SAFE_MODE ARM11 kernel sets this to the SAFE_MODE NS titleID.

This field contains the titleID of the first title to launch from CTR-NAND after the [[FIRM]] system processes are loaded. The [[Process Manager Ports|PM]] module launches this title. If this field titleID is all-zero, the system will not attempt to launch the title. The regular ARM11 kernel sets this to the regular [[NS]] titleID, while the SAFE_MODE ARM11 kernel sets this to the SAFE_MODE NS titleID.

=== SYSCOREVER ===

== SYSCOREVER ==

When launching [[NCCH#CXI|CXIs]], the value stored here must match the core version field stored in the CXI exheader. If they do not match, the [[Process Manager Ports|PM]] module will refuse to launch the ARM11 process. The regular ARM11 kernel sets this to 0x2, while the SAFE_MODE ARM11 kernel sets this to 0x3.

When launching [[NCCH#CXI|CXIs]], the value stored here must match the core version field stored in the CXI exheader. If they do not match, the [[Process Manager Ports|PM]] module will refuse to launch the ARM11 process. The regular ARM11 kernel sets this to 0x2, while the SAFE_MODE ARM11 kernel sets this to 0x3.

=== FIRM_SYSCOREVER ===

== FIRM_SYSCOREVER ==

Normally this is the same as SYSCOREVER. This used by [[AM:InstallNATIVEFIRM]] for comparing with the NATIVE_FIRM titleID-low. When the low u8 from the NATIVE_FIRM titleID-low is larger than FIRMSYSCOREVER, [[AM:InstallNATIVEFIRM]] will trigger FIRM installing. When that u8 is not larger than FIRM_SYSCOREVER, and these two values don't match, [[AM:InstallNATIVEFIRM]] will return an error.

Normally this is the same as SYSCOREVER. This used by [[AM:InstallNATIVEFIRM]] for comparing with the NATIVE_FIRM titleID-low. When the low u8 from the NATIVE_FIRM titleID-low is larger than FIRMSYSCOREVER, [[AM:InstallNATIVEFIRM]] will trigger FIRM installing. When that u8 is not larger than FIRM_SYSCOREVER, and these two values don't match, [[AM:InstallNATIVEFIRM]] will return an error.

=== UNITINFO ===

== UNITINFO ==

{| class="wikitable" border="1"

{| class="wikitable" border="1"

!  Bit

!  Bit

|}

|}

Normally this register is all-zero, however bit1 in this field is set by the ARM11 kernel when ARM debug CP14 DSCR bit14 is set. [[NS]] loads the menu TID from MENUTID when bits 1-7 of this register are clear. [[ErrDisp]] will display development error info when bit0 is clear.

Normally this field is all-zero, however bit1 in this field is set by the ARM11 kernel when ARM debug CP14 DSCR bit14 is set. [[NS]] loads the menu TID from MENUTID when bits 1-7 of this register are clear. [[ErrDisp]] will display development error info when bit0 is clear.

=== KERNEL_CTRSDKVERSION / FIRM_CTRSDKVERSION ===

== KERNEL_CTRSDKVERSION / FIRM_CTRSDKVERSION ==

This is the CTR-SDK version which was used to build the currently running [[FIRM]].

This is the CTR-SDK version which was used to build the currently running [[FIRM]].

=== APPMEMALLOC ===

== APPMEMALLOC ==

This contains the total size of the memory that can be allocated with the application [[SVC|memory-type]]. On retail this is 64MB for [[3DS_Development_Unit_Software#Config|prod]].

This contains the total size of the memory that can be allocated with the application [[SVC|memory-type]]. On retail this is 64MB for [[3DS_Development_Unit_Software#Config|prod]].

== Shared Memory Page Fields ==

= Shared Memory Page Fields =

=== MENUTID ===

== MENUTID ==

This contains the titleID of the retail menu which will be launched by [[NS]].

This contains the titleID of the retail menu which will be launched by [[NS]].

=== ACTIVEMENUTID ===

== ACTIVEMENUTID ==

This contains the titleID of the currently running menu launched by [[NS]]. Normally this is the home menu TID from MENUTID, but if launching that fails this titleID is the [[NS#Alternate Menu|alternate menu]].(On debug units this is the TID loaded from [[Config_Savegame|config]])

This contains the titleID of the currently running menu launched by [[NS]]. Normally this is the home menu TID from MENUTID, but if launching that fails this titleID is the [[NS#Alternate Menu|alternate menu]].(On debug units this is the TID loaded from [[Config_Savegame|config]])