From 833635afaa02fc602d79f0be0a03bd49f9818e9d Mon Sep 17 00:00:00 2001
From: RichardG867 <richardg867@gmail.com>
Date: Thu, 19 Nov 2020 15:49:32 -0300
Subject: [PATCH] Fix crash in standalone settings mode

---
 src/mem/rom.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mem/rom.c b/src/mem/rom.c
index 56bc6314f..fc827539b 100644
--- a/src/mem/rom.c
+++ b/src/mem/rom.c
@@ -364,7 +364,7 @@ bios_add(void)
 {
     int temp_cpu_type, temp_cpu_16bitbus = 1;
 
-    if (AT) {
+    if (AT && cpu_s) {
 	temp_cpu_type = cpu_s->cpu_type;
 	temp_cpu_16bitbus = (temp_cpu_type == CPU_286 || temp_cpu_type == CPU_386SX || temp_cpu_type == CPU_486SLC || temp_cpu_type == CPU_IBM386SLC || temp_cpu_type == CPU_IBM486SLC );
     }