Variant of 4.4BSD Unix for microcontrollers
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LiteBSD is a variant of 4.4BSD operating system adapted for microcontrollers. Currently, only the Microchip PIC32MZ family is supported as a target. It is equipped with MMU with paging support, and 512kbytes of on-chip RAM. These resources are enough to build a compact networked embedded system.

For more information, see LiteBSD Wiki pages.

Precompiled binaries for several PIC32MZ boards are available from Autobuild Download page.

If you are looking for the LiteBSD ports tree please see this repository.