From e77248f8e958765e5436fa8b6d17b344ba60ea31 Mon Sep 17 00:00:00 2001
From: lukas <lukas.heiligenbrunner@gmail.com>
Date: Thu, 24 Feb 2022 22:16:57 +0100
Subject: [PATCH] writing two chars with bios interupts

---
 boot.s | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/boot.s b/boot.s
index e23fead..b584d95 100644
--- a/boot.s
+++ b/boot.s
@@ -2,7 +2,15 @@
 .global init # makes our label "init" available to the outside
 
 init: # this is the beginning of our binary later.
-  jmp init # jump to "init"
+  #jmp init # jump to "init"
+  #ljmpw $0xFFFF, $0 # jumps to the "reset vector", doing a reboot
+  jmp printhelloworld
+
+printhelloworld:
+  mov $0xe37, %ax
+  int $0x10 # video bios interrupt
+  mov $0xe38, %ax
+  int $0x10 # video bios interrupt
 
 .fill 510-(.-init), 1, 0 # add zeroes to make it 510 bytes long
 # . is current position - start position