From 63624488e9f993ccbc0b4fa54ae32832bd684506 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Georges=20Dup=C3=A9ron?= <georges.duperon@gmail.com>
Date: Tue, 3 Jul 2018 17:49:56 +0200
Subject: [PATCH] os.bat is now a triple chameleon: MS-DOS .bat, Unix .sh and
 x86 bootable floppy disk image

---
 example-os/os.asm | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/example-os/os.asm b/example-os/os.asm
index e69cebf..5c045e2 100644
--- a/example-os/os.asm
+++ b/example-os/os.asm
@@ -3,6 +3,7 @@
 
 db `#!/usr/bin/env sh\n`
 db `: <<'EOF'\n`
+db `GOTO msdos\n`
 
 times 0x7c78-0x7c00-($-$$) db 0
         
@@ -50,7 +51,15 @@ db 0xaa
 db `\n`
 db `EOF\n`
 db `echo Hello world from sh!\n`
+db `while sleep 10; do :; done\n`
 db `exit\n`
 
+;; end of the SH section, everything until this point is skipped by MS-DOS batch due to the GOTO'
+db `:msdos\n`
+db `@cls\n`
+db `@echo "hello world" from MS-DOS\n`
+db `:loop\n`
+db `GOTO loop\n`
+
 ;; Fill up to 1.44M with 0
 times (1440*1024)-($-$$) db 0