From a84fadd65d923fbb71c5c2b9884972114a0c2928 Mon Sep 17 00:00:00 2001
From: Kartik Agaram <vc@akkartik.com>
Date: Sat, 19 Dec 2020 20:59:40 -0800
Subject: 7355 - learning to boot into 32-bit mode

These exercises are from the incomplete "Writing a simple operating system
from scratch" by Nick Blundell.
  https://www.cs.bham.ac.uk/~exr/lectures/opsys/10_11/lectures/os-dev.pdf
---
 apps/bos/print_string.asm | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100644 apps/bos/print_string.asm

(limited to 'apps/bos/print_string.asm')

diff --git a/apps/bos/print_string.asm b/apps/bos/print_string.asm
new file mode 100644
index 00000000..555e4d52
--- /dev/null
+++ b/apps/bos/print_string.asm
@@ -0,0 +1,11 @@
+print_string:
+    pusha
+    mov ah, 0x0e
+loop:
+    mov al, [bx]
+    int 0x10
+    add bx, 1
+    cmp al, 0
+    jne loop
+    popa
+    ret
-- 
cgit 1.4.1-2-gfad0