From 735d90fa9575666124f018ad64f08db7d7ff7c63 Mon Sep 17 00:00:00 2001
From: Joseph Hunkeler <jhunkeler@gmail.com>
Date: Tue, 15 May 2018 11:19:23 -0400
Subject: Initial commit of isr.asm

---
 isr.asm | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 isr.asm

(limited to 'isr.asm')

diff --git a/isr.asm b/isr.asm
new file mode 100644
index 0000000..9ac6bb6
--- /dev/null
+++ b/isr.asm
@@ -0,0 +1,15 @@
+int21:
+	nop
+int22:
+	nop
+int20:
+	pusha
+	mov ax, cs
+	mov ds, ax
+	mov ax, 0b800h
+	mov es, ax
+
+	mov bp, 0000h
+	mov word [es:bp+79*2], 17h << 8 | 'B'
+	popa
+	iret
-- 
cgit