From: ian <ian>
Date: Sat, 19 Jan 2008 14:28:56 +0000 (+0000)
Subject: treat NUL specially
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ijackson/git?a=commitdiff_plain;h=1b29538e9ade7cd7849f773e07af13eb3059dcde;p=trains.git

treat NUL specially
---

diff --git a/hostside/startup.c b/hostside/startup.c
index 04d844a..7efdc1a 100644
--- a/hostside/startup.c
+++ b/hostside/startup.c
@@ -198,6 +198,7 @@ void on_pic_detect1(const PicInsnInfo *pii, const PicInsn *pi, int segn) {
 /*---------- fixme move these to where they want to go ----------*/
 
 void on_pic_nmradone(const PicInsnInfo *pii, const PicInsn *pi, int objnum) {
+  if (!objnum) die("PIC sent NUL!");
   if (sta_state <= Sta_Settling) return;
   if (sta_state != Sta_Run) die("PIC sent NMRADONE in Resolving");