4 ms·

Can you please elaborate "about hardware" and "use different OS"? Do you recommend getting some firmware experience that directly interacts with hardware, and

• sargstuff 3y ago
  QEM[2][3] & write shell script with option to a) "compile latest source & run the just compiled OS under QEM emulation" OR b) run known working OS under qem with development environment/tools for messing with source used in part a. Advantage: on same box, one window can be the development environment. other QEM can compile/run in different window to test what was done via development environment. aka edit english paper in word processor & save. view/print the compiled results in different window. grub / uboot[1] would be what pc hardware bios would use in place of the above QEM shell/boot script. [0] : https://en.wikipedia.org/wiki/GNU_GRUB https://en.wikipedia.org/wiki/GNU_GRUB [1] : https://en.wikipedia.org/wiki/Das_U-Boot https://en.wikipedia.org/wiki/Das_U-Boot [2] : https://nickdesaulniers.github.io/blog/2018/10/24/booting-a-custom-linux-kernel-in-qemu-and-debugging-it-with-gdb/ https://nickdesaulniers.github.io/blog/2018/10/24/booting-a-... [3] : Helpful info QEM to kernel vs QEM to bios with bios booting/loading kernel : http://unix.stackexchange.com/questions/397939/turning-off-kaslr-to-debug-linux-kernel-using-qemu-and-gdb http://unix.stackexchange.com/questions/397939/turning-off-k...