Multum In Parvo Operating System is a cooperative multitasking RTOS designed for single-chip micro-controllers with severely limited RAM (e.g. less than 256 bytes) and ROM. It provides the flexibility of an RTOS in low-cost embedded designs. System-On-Chip (SoC) programmers can choose mipOS for its small, fast and royalty-free benefits.

mipOS manages tasks, providing mutual exclusion, signals, message queues, memory management, malloc, memory pools, timers. Optional modules include: command line support, file system and stdio support.

mipOS is designed to be as compact as possible for the target architecture. Its small footprint enables use in devices with limited memory capacity, including on-chip in SoC implementations, and that reduces power demands, extending battery life.

Small size also makes mipOS easy to understand and use. Computer science students can enhance their understanding of a simple OS and gain valuable practical experience modifying it, for example introducing new features.

mipOS is highly portable: it is written mainly in C programming language. mipOS is free for any use.

It is also royalty-free, ideal for applications with high-volume production needs.

mipOS is delivered in fully documented source code form.

mipOS can be executed on Windows™ or Linux user-space process for simulation purposes (both Microsoft® Visual Studio™ and GCC compilers are supported).

The original design and the source code was published in an article for the magazine Computer Programming where the internals of a portable and scalable kernel for microcontrollers with severely limited resource are described.

mipOS has been tested on Intel x86 chip, STMicroelectronics® ST7 microcontrollers, STM8 microcontroller and STM32 32bit, ARM-Cortex M3 microcontroller families.

See also: http://www.eantcal.eu/home/c/mipos.