From 7a9c633157d3c94d5eeee8c1a10ba204f1c9e23d Mon Sep 17 00:00:00 2001
From: Peter Ferrie <peter.ferrie@gmail.com>
Date: Tue, 8 Oct 2019 18:09:20 -0700
Subject: [PATCH] check for good aux copy

---
 src/hw.memcheck.a | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/hw.memcheck.a b/src/hw.memcheck.a
index a83d37fb7..fbc7a95a0 100644
--- a/src/hw.memcheck.a
+++ b/src/hw.memcheck.a
@@ -52,6 +52,8 @@ Has128K
          sta   $80,x
          sta   SETAUXZP              ; also copy to aux zp in case we pass
          sta   $80,x
+         cmp   $80,x
+         bne   @no
          sta   CLRAUXZP
          dex
          bpl   -