From 798389428cc77b18ab7e144fa5f8379786dd8eac Mon Sep 17 00:00:00 2001
From: Mark Pizzolato <mark@infocomm.com>
Date: Tue, 2 Jun 2020 10:31:20 -0700
Subject: [PATCH] PDP8: Report unimplemented DUMP command and give suggestion

As discussed in #852
---
 PDP8/pdp8_sys.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/PDP8/pdp8_sys.c b/PDP8/pdp8_sys.c
index a0cc7023..5ac4deba 100644
--- a/PDP8/pdp8_sys.c
+++ b/PDP8/pdp8_sys.c
@@ -244,8 +244,12 @@ return SCPE_IERR;
 
 t_stat sim_load (FILE *fileref, CONST char *cptr, CONST char *fnam, int flag)
 {
-if ((*cptr != 0) || (flag != 0))
+if (*cptr != 0)
     return SCPE_ARG;
+if (flag != 0)
+    return sim_messagef (SCPE_UNK, "DUMP command not implemented in this simulator\n"
+                                    "You can capture memory contents into a file via:\n"
+                                    "EXAMINE @outputfile.txt 0-7777\n");
 if ((sim_switches & SWMASK ('R')) ||                    /* RIM format? */
     (match_ext (fnam, "RIM") && !(sim_switches & SWMASK ('B'))))
     return sim_load_rim (fileref);