Quatros

Author:

Sun Wei-Fang1,Chan Shih-Hsien1,Liu Zhe-Ting1,Yeh Yu-Hung1,Chou Pai H.1

Affiliation:

1. National Tsing Hua University, Hsinchu City, Taiwan

Abstract

Hands-on experience is crucial to truly understanding the principles of operating systems (OS). This paper describes a preemptive, multithreaded embedded OS assigned as a project in a junior-level OS course. It targets the popular 8051 instruction set architecture (ISA) and can run with as little as 128 bytes of RAM and 1 KB of program memory with preemption and synchronization primitives such as semaphores. It is written in C and assembly and compiled using the open-source Small Device C Compiler (SDCC). It runs on the free EdSim51 simulator, which simulates common peripherals such as LCD, keypads, 7-segment LEDs, ADC, and UART all in high fidelity. This course project has received positive feedback from students who took the course.

Publisher

Association for Computing Machinery (ACM)

Subject

Engineering (miscellaneous),Computer Science (miscellaneous)

Reference13 articles.

1. Arm Limited. 2019. RTX51 Tiny Real-Time Kernel. http://www.keil.com/rtx51tiny/. Arm Limited. 2019. RTX51 Tiny Real-Time Kernel. http://www.keil.com/rtx51tiny/.

2. Richard Barry. 2019. The FreeRTOS Kernel: Market-Leading De-facto Standard and Cross Platform RTOS Kernel. https://www.freertos.org. Richard Barry. 2019. The FreeRTOS Kernel: Market-Leading De-facto Standard and Cross Platform RTOS Kernel. https://www.freertos.org.

3. Wayne A Christopher Steven J Procter and Thomas E Anderson. 1993. The Nachos Instructional Operating System. In USENIX Winter. 481--488. Wayne A Christopher Steven J Procter and Thomas E Anderson. 1993. The Nachos Instructional Operating System. In USENIX Winter. 481--488.

4. Use of FreeRTOS in Teaching a Real-Time Embedded Systems Design Course;He Nannan;The ASEE Computers in Education (CoED) Journal,2014

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