From ab32208bba61d039d6f3453a103f32f115a408d3 Mon Sep 17 00:00:00 2001
From: Richard Cornwell <rich@sky-visions.com>
Date: Mon, 3 Jan 2022 23:47:06 -0500
Subject: [PATCH] IBM360: Fixed issue with NOP on tape drive.

---
 IBM360/ibm360_mt.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/IBM360/ibm360_mt.c b/IBM360/ibm360_mt.c
index a702c73..a70815d 100644
--- a/IBM360/ibm360_mt.c
+++ b/IBM360/ibm360_mt.c
@@ -291,6 +291,12 @@ uint8  mt_startcmd(UNIT *uptr,  uint8 cmd) {
          return 0;
 
     case 0x3:              /* Control */
+         if (cmd == 0x03) {
+             uptr->SNS = 0;
+             return SNS_CHNEND|SNS_DEVEND;
+         }
+         /* Fall through */
+
     case 0xb:              /* Control */
          uptr->SNS = 0;
          if ((uptr->flags & UNIT_ATT) == 0) {