From 85f7d8d7dd0637b69023dce380ef63da92f05a0d Mon Sep 17 00:00:00 2001
From: Brad Grantham <grantham@plunk.org>
Date: Mon, 10 Sep 2018 12:29:16 -0700
Subject: [PATCH] update cpu6502 with Jim's improvements

---
 cpu6502.h | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/cpu6502.h b/cpu6502.h
index 3483869..027b3e1 100644
--- a/cpu6502.h
+++ b/cpu6502.h
@@ -14,6 +14,12 @@
         void read(int addr, unsigned char data);
 */
 
+#ifndef CPU6502_H
+#define CPU6502_H
+
+#include <stdlib.h>
+#include <assert.h>
+
 template<class CLK, class BUS>
 struct CPU6502
 {
@@ -1468,7 +1474,8 @@ struct CPU6502
 
             default:
                 printf("unhandled instruction %02X at %04X\n", inst, pc - 1);
-                fflush(stdout); exit(1);
+                fflush(stdout);
+                exit(1);
         }
         assert(cycles[inst] > 0);
         clk.add_cpu_cycles(cycles[inst]);
@@ -1496,3 +1503,5 @@ int CPU6502<CLK, BUS>::cycles[256] =
     /* 0xF- */ 2, 5, -1, -1, -1, 4, 6, -1, 2, 4, -1, -1, -1, 4, 7, -1,
 };
 
+#endif // CPU6502_H
+