Commit Graph

5 Commits

Author SHA1 Message Date
Eric-Paul Ickhorn 83eb29d55c
Try to fix GDT; unsuccessful
This commit just existed because of a misunderstanding leading to the
belief that the GDT was finally working; it wasn't though.
2024-07-06 00:12:06 +02:00
Eric-Paul Ickhorn 5180348c39
Add stage 2 loader entry point
This commit adds the entry point for the second stage of the loader.
It currently doesn't contain a lot of code, but it will have to expand
in the next bit of time.
2024-07-06 00:08:57 +02:00
Eric-Paul Ickhorn d773a8f9e2
Add memory utilities and math utils
This commit adds the well known primitive memory functions:

- Copy Memory
- Compare Memory for being equal
- Set Memory to a value

It also adds a math utility file at the according location.
2024-07-06 00:07:08 +02:00
Eric-Paul Ickhorn c3f2c7fbfc
Intermediate commit to add GDT
In this commit, it was tried to set a linear GDT. It didn't work; but
in the future, it will.
2024-07-06 00:05:17 +02:00
Eric-Paul Ickhorn 94a228b278
Add A20 line check
This commit adds a check for whether the A20 line is usable; checking
whether more than one megabyte of RAM can be used. If it isn't usable,
it currently isn't activated, but rather, the boot process is stopped.
2024-07-06 00:03:48 +02:00