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| author | kotorifan <kotorifan05@gmail.com> | 2026-01-31 15:22:00 +0100 |
|---|---|---|
| committer | kotorifan <kotorifan05@gmail.com> | 2026-02-04 09:01:10 +0100 |
| commit | e5c28a46a731a79d02266aa690a90a8f809d0f70 (patch) | |
| tree | 3dfc555f1ca98c97b3f48f035e897e3d0cca07ba /src/boot/boot.stage2.gdt32.asm | |
| parent | dfe4a33865ef01c5068804f77da844cdebd87f00 (diff) | |
| download | kotori-os-e5c28a46a731a79d02266aa690a90a8f809d0f70.tar.gz | |
A20 enable code added
Diffstat (limited to 'src/boot/boot.stage2.gdt32.asm')
| -rw-r--r-- | src/boot/boot.stage2.gdt32.asm | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/boot/boot.stage2.gdt32.asm b/src/boot/boot.stage2.gdt32.asm new file mode 100644 index 0000000..f9f27a5 --- /dev/null +++ b/src/boot/boot.stage2.gdt32.asm @@ -0,0 +1,29 @@ +y ;; boot.stage2.gdt32.asm + + +GDT32: + .null: + dd 0x0 + dd 0x0 + .code: + dw 0xffff + dw 0x0000 + db 0x00 + db 10011010b + db 11001111b + db 0x00 + .data: + dw 0xffff + dw 0x0000 + db 0x00 + db 10010010b + db 11001111b + db 0x00 +GDT32_end: + +GDT32_ptr: + .limit: dw GDT32_end - GDT32 - 1 + .base: dd GDT32 + + CODE_SEG32 equ gdt32_code_segment - gdt32_start + DATA_SEG32 equ gdt32_data_segment - gdt32_start |