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View Code? Open in Web Editor NEWA very mini OS kernel, including the MBR boot sector, BL2 (ntmio.sys) and the kernel (kernel.sys)
License: GNU General Public License v2.0
A very mini OS kernel, including the MBR boot sector, BL2 (ntmio.sys) and the kernel (kernel.sys)
License: GNU General Public License v2.0
Initialize the PIC so that it can fire the interrupt to the CPU.
Add system call skeleton
Implement the GDT and IDT initialization in kernel
Implement the keyboard & mouse interrupt handler
I found out that the page directory table still been corrupted if a second task has been created, looks like there are still some code to overwrite the page directory table area by mistake.
Implement the kernel level va_list, va_start, va_end, in x86-32 mode
Support serial port input/output
Implement the mem-* family functions in kernel.
Implement the kernel mode exec() function.
Implement the MBR harddisk parser, and also can build up the root fs in memory based on the FAT16 partition from the HDD.
When text mode UI scrolling, the bottom line didn't get clean up before outputing new strings.
Implement the TUI based console instead of the GUI based console. As TUI based console need less effort on graphics stuff drawing and rendering, which took too much time!
Implement the serial port support, as it can be used to output the debugging log and information.
Currently the k_printf() can only display an string, we need a more enhanced version that can display the formatted string as well.
Add the scripts to build 50MB HDD raw image, this HDD is 50MB with MBR
Now all source code (the MBR, the BL2 and the kernel) are flatten in the same directory, this is a mess as more and more files and codes are add, need to re-structure them into the different folder for different compoment.
The bootloader 2 can detect the memory layout and it can pass the memory layout to kernel
Add the docker based build and compilation so that even in Windows it still can build the image.
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