# BlocksDS SDK examples: BIOS

This folder contains examples of how to use functions provided by the DS BIOS.

- `crc16`: Uses BIOS routines to calculate the CRC-16 checksum of a file.
- `rsa`: Uses BIOS routines to verify the RSA signature of a file.
- `sha1`: Uses BIOS routines to calculate the SHA-1 hash of a file.

Note that examples related to decompression are provided in the "compression"
directory.
