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NS and APT Services: Difference between revisions

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[[Category:Services]]
The NS ('''N'''intendo User Interface '''S'''hell) system module is the first module launched from a CTR-NAND title after the [[FIRM]] processes are loaded (also see [[Bootloader]]). This module is launched by the pm process, with the titleID loaded from NS state(hard-coded TID initialized during applet TID-array initialization). NS first launches [[ErrDisp]], then the menu. On retail the menu TID is loaded from NS state, while on dev/debug the menu TID is loaded from [[Config_Savegame|config]]. On dev-units if the menu TID block doesn't exist in [[Config_Savegame|config]], NS will attempt to launch the alternate menu instead. The TID of the launched menu is then written to [[Configuration Memory|ACTIVEMENUTID]]. NS uses [[PMApp:LaunchTitle|pm:app]] to launch titles.
The NS ('''N'''intendo User Interface '''S'''hell) system module is the first module launched from a CTR-NAND title after the [[FIRM]] processes are loaded (also see [[Bootloader]]). This module is launched by the pm process, with the titleID loaded from NS state(hard-coded TID initialized during applet TID-array initialization). NS first launches [[ErrDisp]], then the menu. On retail the menu TID is loaded from NS state, while on dev/debug the menu TID is loaded from [[Config_Savegame|config]]. On dev-units if the menu TID block doesn't exist in [[Config_Savegame|config]], NS will attempt to launch the alternate menu instead. The TID of the launched menu is then written to [[Configuration Memory|ACTIVEMENUTID]]. NS uses [[PMApp:LaunchTitle|pm:app]] to launch titles.


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NS will only execute this code-path when [[Configuration Memory|0x1FF80016]] is value zero, when KERNEL_VERSIONMAJOR is value 2, and when KERNEL_VERSIONMINOR is less than 35. Therefore, this code-path is only executed when the running NATIVE_FIRM version is prior to [[5.0.0-11]].
NS will only execute this code-path when [[Configuration Memory|0x1FF80016]] is value zero, when KERNEL_VERSIONMAJOR is value 2, and when KERNEL_VERSIONMINOR is less than 35. Therefore, this code-path is only executed when the running NATIVE_FIRM version is prior to [[5.0.0-11]].


{{Anchor|NSS}}{{Anchor|ns:s}}
= NS Service "ns:s" =
= NS Service "ns:s" =
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The maximum sessions that can be used with this service is two, therefore only two processes can use this service at the same time.
The maximum sessions that can be used with this service is two, therefore only two processes can use this service at the same time.


{{Anchor|NSP}}{{Anchor|ns:p}}
=NS Power Service "ns:p"=
=NS Power Service "ns:p"=
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This was added with [[3.0.0-5]]. The PTM sysmodule connects to this service, and syncs whenever [[PTM|ptm:s GetShellState()]] changes.
This was added with [[3.0.0-5]]. The PTM sysmodule connects to this service, and syncs whenever [[PTM|ptm:s GetShellState()]] changes.


{{Anchor|NSC}}{{Anchor|ns:c}}
=NS Service "ns:c"=
=NS Service "ns:c"=
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This was added with [[5.0.0-11]]. It is used by the Instruction Manual applet, and is likely related to triggering SD/Game Card removal errors when ejecting the media the manual is stored on.
This was added with [[5.0.0-11]]. It is used by the Instruction Manual applet, and is likely related to triggering SD/Game Card removal errors when ejecting the media the manual is stored on.


{{Anchor|APT}}{{Anchor|APTU}}{{Anchor|APT:U}}{{Anchor|APTS}}{{Anchor|APT:S}}
=APT Services=
=APT Services=
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This is [[NSS:SetWirelessRebootInfo|setup]] by the dlplay system-application, before launching the DLP-child which can then use [[APT:GetWirelessRebootInfo]]. The MAC address and passphrase is used for connecting to the host by the DLP-child. See also [[DLP_Services|here]].
This is [[NSS:SetWirelessRebootInfo|setup]] by the dlplay system-application, before launching the DLP-child which can then use [[APT:GetWirelessRebootInfo]]. The MAC address and passphrase is used for connecting to the host by the DLP-child. See also [[DLP_Services|here]].


{{Anchor|APTA}}{{Anchor|APT:A}}
="APT:A" Service=
="APT:A" Service=
This was added with [[7.0.0-13|7.0.0-X]]. Official apps built with the CTRSDK for system-version >=[[7.0.0-13|7.0.0-X]] normally use the "APT:A" service instead of "APT:U". Those processes also have "APT:A" instead of "APT:U" in the service-access-control. Unlike APT:U, APT:A can call [[APT:GetAppletInfo]] with applet ID 0x300.
This was added with [[7.0.0-13|7.0.0-X]]. Official apps built with the CTRSDK for system-version >=[[7.0.0-13|7.0.0-X]] normally use the "APT:A" service instead of "APT:U". Those processes also have "APT:A" instead of "APT:U" in the service-access-control. Unlike APT:U, APT:A can call [[APT:GetAppletInfo]] with applet ID 0x300.
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Note that at some point the total AppID entry count was changed from 28 to 27.
Note that at some point the total AppID entry count was changed from 28 to 27.
[[Category:Services]]
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