IMLAC: Use sim_video stubs rather than #ifdefs.

imlac/imlac_bel.c

@@ -58,9 +58,7 @@ bel_iot (uint16 insn, uint16 AC)
   sim_debug (DBG, &bel_dev, "IOT\n");
   if ((insn & 0771) == 0711) { /* BEL */
     sim_debug (DBG, &bel_dev, "Dong!\n");
-#ifdef HAVE_LIBSDL
     vid_beep ();
-#endif
   }
   return AC;
 }

imlac/imlac_cpu.c

@@ -25,9 +25,7 @@
 */
 
 #include "imlac_defs.h"
-#ifdef HAVE_LIBSDL
 #include "display/display.h"
-#endif
 
 
 /* Debug */
@@ -668,7 +666,6 @@ rom_show_type (FILE *st, UNIT *up, int32 v, CONST void *dp)
   return SCPE_OK;
 }
 
-#ifdef HAVE_LIBSDL
 /* Called from display library to get data switches. */
 void
 cpu_get_switches (unsigned long *p1, unsigned long *p2)
@@ -683,4 +680,3 @@ cpu_set_switches (unsigned long p1, unsigned long p2)
 {
   DS = p1 & 0177777;
 }
-#endif /* HAVE_LIBSDL */

imlac/imlac_crt.c

@@ -47,12 +47,18 @@ static DEBTAB crt_deb[] = {
   { NULL, 0 }
 };
 
+#if defined(USE_SIM_VIDEO) && defined(HAVE_LIBSDL)
+#define CRT_DIS  0
+#else
+#define CRT_DIS  DEV_DIS
+#endif
+
 DEVICE crt_dev = {
   "CRT", &crt_unit, NULL, NULL,
   1, 8, 16, 1, 8, 16,
   NULL, NULL, &crt_reset,
   NULL, NULL, NULL,
-  NULL, DEV_DISABLE | DEV_DEBUG | DEV_DIS, 0, crt_deb,
+  NULL, DEV_DISABLE | DEV_DEBUG | CRT_DIS, 0, crt_deb,
   NULL, NULL, NULL, NULL, NULL, NULL
 };