Been looking at RTOS; but those are a waste of resource for my user case since I just want a simple CLI based OS I can run on the Teensy. Something similar to what used to run on old computers like the Amstrad CPC or the C64 and so on. My ideal would be something like DOS 6 or CP/M.
The Teensy is connected to a small LCD and few IO devices, so the idea is to run some OS that allow me to use the teensy as portable device for basic serial communication, write text and other simple application, kinda like what old 8 bit machines used to do in the old age (considering that something like a MSX would run a full basic interpreter and simple OS on a 4MHz CPU, I assume doing something similar on a beast like the Teensy should be fine). Many routers and other IOT devices are totally stand alone and can run their own OS to function independently, and I believe those are less powerful than a teensy 4.1.
Does anyone have suggestions about what to use? If I could run a CLI on the LCD screen connected to the teensy and do what I would do like in 1984 on an old 8 bit machine (minus games of course, I don't care about that), but on something so low cost like a Teensy, it would be amazing and also would be a great distraction-free device that I could use to learn more about constrained embedded devices programming.
The Teensy is connected to a small LCD and few IO devices, so the idea is to run some OS that allow me to use the teensy as portable device for basic serial communication, write text and other simple application, kinda like what old 8 bit machines used to do in the old age (considering that something like a MSX would run a full basic interpreter and simple OS on a 4MHz CPU, I assume doing something similar on a beast like the Teensy should be fine). Many routers and other IOT devices are totally stand alone and can run their own OS to function independently, and I believe those are less powerful than a teensy 4.1.
Does anyone have suggestions about what to use? If I could run a CLI on the LCD screen connected to the teensy and do what I would do like in 1984 on an old 8 bit machine (minus games of course, I don't care about that), but on something so low cost like a Teensy, it would be amazing and also would be a great distraction-free device that I could use to learn more about constrained embedded devices programming.