Nintendo provides application developers with an API, which communicate with certain services. Services, in this sense, are system processes running in the background which wait for incoming requests. When a process wants to communicate with a service, it first needs to get a handle to the named service, and then it can communicate with the service via interprocess communication. Each service has a name up to 8 characters, for example "nim:u".
Handles for services are retrieved from the service manager port, "srv:". Services are an abstraction of ports, they operate the same way except regular ports can have their handles retrieved directly from a SVC.
For a description of how commands and arguments are passed to services, see IPC Command Structure.
List of services:
| Old3ds | Services | Service names | Notes |
|---|---|---|---|
| Yes | Filesystem servicesā | fs:USER, fs:LDR, fs:REG | |
| Yes | Process Servicesā | ||
| Yes | PXI Servicesā | PxiFS0, PxiFS1, PxiFSB, PxiFSR, PxiPM, pxi:am9, pxi:dev, pxi:mc, pxi:ps9 | |
| Yes | Application Manager Services | am:net, am:u, am:sys, am:pipe | |
| Yes | Process Manager Services | pm:app, pm:dbg | |
| Yes | NIM Services | ||
| Yes | Config Services | ||
| Yes | NS and APT Services | ns:s, ns:p, ns:c, APT:A, APT:S, APT:U | |
| Yes | RO Services | ldr:ro | |
| Yes | NDM Services | ||
| Yes | CSND Services | csnd:SND | |
| Yes | Codec Services | cdc:HID, cdc:MIC, cdc:CSN, cdc:DSP, cdc:LGY, cdc:CHK | |
| Yes | DSP Services | dsp:DSP | |
| Yes | GSP Services | gsp::Lcd, gsp::Gpu | |
| Yes | IR Services | ||
| Yes | I2C Services | i2c::MCU, i2c::CAM, i2c::LCD, i2c::DEB, i2c::HID, i2c::IR, i2c::EEP | |
| Yes | GPIO Services | gpio:CDC, gpio:MCU, gpio:HID, gpio:NWM, gpio:IR | |
| Yes | HID Services | hid:USER, hid:SPVR | |
| Yes | PTM Services | ||
| Yes | NWM Services | ||
| Yes | HTTP Services | ||
| Yes | SSL Services | ||
| Yes | Socket Services | ||
| Yes | AC Services | ||
| Yes | Friend Services | ||
| Yes | News Services | ||
| Yes | PDN Services | ||
| Yes | SPI Services | ||
| Yes | Loader Services | ||
| Yes | MCU Services | mcu::CAM, mcu::GPU, mcu::HID, mcu::RTC, mcu::SND, mcu::NWM, mcu::HWC, mcu::PLS, mcu::CDC | |
| Yes | MIC Services | mic:u | |
| No | NFC Services | ||
| No | MVD Services | ||
| No | QTM Services |
List of PXI services:
- Filesystem services PXI
- Process Services PXI
- Application Manager Services PXI
- Process Manager Services PXI
- Development Services PXI
- Gamecard Services PXI
- Legacy FIRM PXI (TWL_FIRM/AGB_FIRM)
List of ports:
See Error codes.