From 22c1d45e59077f1f0c32b8babd2eb36d2540502b Mon Sep 17 00:00:00 2001
From: Ain <41307858+nero@users.noreply.github.com>
Date: Mon, 20 Apr 2020 21:41:42 +0200
Subject: [PATCH] Start document on EGA video

---
 doc/ega.txt | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100644 doc/ega.txt

diff --git a/doc/ega.txt b/doc/ega.txt
new file mode 100644
index 0000000..68ee7f2
--- /dev/null
+++ b/doc/ega.txt
@@ -0,0 +1,11 @@
+# Enhanced Graphics Adapter
+
+EGA is the successor of CGA, while itself being succeeded by VGA.
+
+## Detection
+
+mov ah, 12h
+mov bl, 10h
+int 0x10
+
+If there is an EGA (or up) display present, bl will be changed.