From 96a74645a24496fb70e13edc7b36e518df635ded Mon Sep 17 00:00:00 2001
From: Stephen Crane <jscrane@gmail.com>
Date: Fri, 14 Sep 2018 14:41:35 +0100
Subject: [PATCH] bugfix

---
 acia.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/acia.h b/acia.h
index 91bbd62..9347b8a 100644
--- a/acia.h
+++ b/acia.h
@@ -14,7 +14,7 @@ public:
 
 	virtual void write(uint8_t) {}
 
-	virtual uint8_t read() {}
+	virtual uint8_t read() =0;
 	virtual bool more() { return false; }
 };