# Trezor Core  [](https://travis-ci.org/trezor/trezor-core) [](https://gitter.im/trezor/community) This is the source code for 2nd generation of Trezor called Trezor model T. It runs both inside of the device and also in the Trezor Emulator.  ## Documentation * [API](docs/api.md) * [Build instructions](docs/build.md) * [Emulator](docs/emulator.md) * [Testing](docs/testing.md) * [Bootloader](docs/bootloader.md) * [Hardware](docs/hardware.md) * [Memory Layout](docs/memory.md) * [TOIF Image Format](docs/toif.md)