From be6c753765ae8804e685156eeb7dcbecbfaf2b5b Mon Sep 17 00:00:00 2001
From: Richard Cornwell <rcornwell@github.com>
Date: Fri, 25 Sep 2020 00:19:25 -0400
Subject: [PATCH] IBM360: Fixed device assignment for individual controller
 devices.

---
 IBM360/ibm360_chan.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/IBM360/ibm360_chan.c b/IBM360/ibm360_chan.c
index ad9b576..74d05a2 100644
--- a/IBM360/ibm360_chan.c
+++ b/IBM360/ibm360_chan.c
@@ -106,6 +106,7 @@ UNIT         *
 find_chan_dev(uint16 addr) {
     struct dib         *dibp;
     UNIT               *uptr;
+    DEVICE             *dptr;
     int                 i;
 
     if (addr >= MAX_DEV)
@@ -114,7 +115,10 @@ find_chan_dev(uint16 addr) {
     if (dibp == 0)
        return NULL;
     uptr = dibp->units;
-    if (dibp->mask == 0) {
+    dptr = find_dev_from_unit(uptr);
+    if (dptr == NULL)
+       return NULL;
+    if (dptr->flags & DEV_UADDR) {
        for (i = 0; i < dibp->numunits; i++) {
             if (addr == GET_UADDR(uptr->u3))
                 return uptr;