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Re:I spent 5 years writing my own operating system by halfer53 on Saturday June 26, 2021 @09:24PM (#27647660)
I agree, X86 is too complex with its legacy hardware and obscure instructions and environments. It might not be a good starting place to develope hobby projects.

The OS is running in a customised RISV hardware in MIPS for educational purposes, you can read more here https://dl.acm.org/doi/pdf/10.1145/1275462.1275470 The simulator https://github.com/halfer53/rexsimulator

The BIOS has already been written for the serial ports, etc. So it is quite easy for me to interact with the devices in the OS.

Re:I spent 5 years writing my own operating system by akkartik on Saturday June 26, 2021 @09:28PM (#27647692)
This is really cool, to the extent that I'm surprised I've never heard of it. Are universities still using it in coursework?
Re:I spent 5 years writing my own operating system by halfer53 on Saturday June 26, 2021 @09:38PM (#27647745)
Yeah they are still using to teach computer systems and operating system course
Re:I spent 5 years writing my own operating system by ori_b on Saturday June 26, 2021 @10:39PM (#27648040)
It's also by far the best documented and most consistent hardware out there, especially when it comes to configurations. Yes, it's grotty -- but at least you can figure out where the gunk is.
Re:I spent 5 years writing my own operating system by lovelyviking on Saturday June 26, 2021 @10:26PM (#27647967)
How hard would it be to run it on RaspberryPi ? (let's say RaspberryPi 400, the one that is within keyboard case)
Re:I spent 5 years writing my own operating system by grishka on Saturday June 26, 2021 @10:32PM (#27647994)