diff --git a/PDP11/pdp11_rq.c b/PDP11/pdp11_rq.c
index 6e5dbb59..ca782439 100644
--- a/PDP11/pdp11_rq.c
+++ b/PDP11/pdp11_rq.c
@@ -2718,7 +2718,7 @@ if (cptr) {
     cap = (uint32) get_uint (cptr, 10, 0xFFFFFFFF, &r);
     if ((sim_switches & SWMASK ('L')) == 0)
         cap = cap * 1954;
-    if ((r != SCPE_OK) || (cap < RA8U_MINC) || (cap >= max))
+    if ((r != SCPE_OK) || (cap < RA8U_MINC) || (cap > max))
         return SCPE_ARG;
     drv_tab[val].lbn = cap;
     }
diff --git a/sim_fio.c b/sim_fio.c
index 6504897e..d3ed57c2 100644
--- a/sim_fio.c
+++ b/sim_fio.c
@@ -328,7 +328,7 @@ return (t_offset)(ftello64 (st));
 
 /* Apple OS/X */
 
-#if defined (__APPLE__) || defined (__FreeBSD__)
+#if defined (__APPLE__) || defined (__FreeBSD__) || defined(__NetBSD__) || defined (__OpenBSD__) 
 #define S_SIM_IO_FSEEK_EXT_ 1
 int sim_fseeko (FILE *st, t_offset xpos, int origin) 
 {
diff --git a/sim_fio.h b/sim_fio.h
index 595ca720..8d0d988f 100644
--- a/sim_fio.h
+++ b/sim_fio.h
@@ -41,7 +41,7 @@ int32 sim_finit (void);
 #if defined (__linux) || defined (__linux__) || defined (__hpux) || \
     (defined (VMS) && (defined (__ALPHA) || defined (__ia64)) && (__DECC_VER >= 60590001)) || \
     ((defined(__sun) || defined(__sun__)) && defined(_LARGEFILE_SOURCE)) ||                \
-    defined (_WIN32) || defined (__APPLE__) || defined (__FreeBSD__)
+    defined (_WIN32) || defined (__APPLE__) || defined (__FreeBSD__) || defined(__NetBSD__) || defined (__OpenBSD__) 
 typedef t_int64        t_offset;
 #else
 typedef int32        t_offset;