From 264ca2ef6ba4aa95ef0fe7354fe27056c942fa78 Mon Sep 17 00:00:00 2001
From: Richard Cornwell <rich@sky-visions.com>
Date: Tue, 21 Jun 2022 09:48:47 -0400
Subject: [PATCH] KA10: IMP Code support for Tenex.

---
 PDP10/kx10_imp.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/PDP10/kx10_imp.c b/PDP10/kx10_imp.c
index a421f84b..cc95983e 100644
--- a/PDP10/kx10_imp.c
+++ b/PDP10/kx10_imp.c
@@ -28,8 +28,9 @@
 #include "sim_ether.h"
 
 #if NUM_DEVS_IMP > 0
-#define IMP_DEVNUM  0460
-#define WA_IMP_DEVNUM  0400
+#define IMP_DEVNUM      0460
+#define BBN_IMP_DEVNUM  0550
+#define WA_IMP_DEVNUM   0400
 
 #define DEVNUM imp_dib.dev_num
 
@@ -900,7 +901,6 @@ t_stat imp_devio(uint32 dev, uint64 *data)
              check_interrupts(uptr);
              break;
         case TYPE_BBN:
-             break;
         case TYPE_WAITS:
              if (*data & IMP_ODPIEN) {
                  imp_data.pia &= ~07;
@@ -952,7 +952,6 @@ t_stat imp_devio(uint32 dev, uint64 *data)
              *data = (uint64)(uptr->STATUS | (imp_data.pia & 07));
              break;
         case TYPE_BBN:
-             break;
         case TYPE_WAITS:
              *data = (uint64)(imp_data.pia & 0777);
              if (uptr->STATUS & IMPOD)
@@ -3132,9 +3131,11 @@ t_stat imp_attach(UNIT* uptr, CONST char* cptr)
     /* Set to correct device number */
     switch(GET_DTYPE(imp_unit[0].flags)) {
     case TYPE_MIT:
-    case TYPE_BBN:
                    imp_dib.dev_num = IMP_DEVNUM;
                    break;
+    case TYPE_BBN:
+                   imp_dib.dev_num = BBN_IMP_DEVNUM;
+                   break;
     case TYPE_WAITS:
                    imp_dib.dev_num = WA_IMP_DEVNUM;
                    break;