From 9474d5fd709f6d26e09e6aebf82f2c83d1dd2e87 Mon Sep 17 00:00:00 2001
From: Carlos Maiolino <cem@toxiclabs.cc>
Date: Thu, 17 Jul 2025 19:20:27 +0200
Subject: Enable A20 line

Signed-off-by: Carlos Maiolino <cem@toxiclabs.cc>
---
 src/boot/bootloader.asm | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/boot/bootloader.asm b/src/boot/bootloader.asm
index f42e702..fc17af8 100644
--- a/src/boot/bootloader.asm
+++ b/src/boot/bootloader.asm
@@ -87,6 +87,12 @@ start_32:
 	; Set the stack pointer and base pointer further in mem
 	mov ebp, 0x00200000
 	mov esp, ebp
+
+	; Enable A20 line
+	in al, 0x92
+	or al, 2
+	out 0x92, al
+
 	jmp $
 
 ; Fill in to the end and add bootloader signature
-- 
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