From 8615d52cd6bb6f9650df461e9e96ff0a9597bd21 Mon Sep 17 00:00:00 2001
From: CrazyEttin <>
Date: Mon, 15 Aug 2022 17:19:57 +0300
Subject: [PATCH] Add empty tape reader checking

---
 gidubba.asm | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gidubba.asm b/gidubba.asm
index 1c18f4b..b0b98be 100644
--- a/gidubba.asm
+++ b/gidubba.asm
@@ -569,6 +569,10 @@ chrsto: store   buffer + 100, r1
         load    r2, sub
         breq    r1, r2, redend
 
+        ;Check for empty tape reader
+        xor     r2, r2
+        breq    r1, r2, redend
+
         ;Increment the save address
         ;Load the address
         load    r0, chrsto + 1