Fix some compiler warnings.

Author: larsbrinkhoff

dis.c

@@ -339,8 +339,7 @@ lookup_device (int number, int cpu_model)
 static const struct its_oper *
 lookup_oper (word_t word, struct its_oper *table, int size)
 {
-  unsigned int i;
-  int e;
+  int i, e;
 
   e = E (word);
 

info.c

@@ -492,6 +492,8 @@ dmp_info (struct pdp10_memory *memory, int cpu_model)
   word_t jbsa, jbda, jbsym;
   int p;
 
+  (void)cpu_model;
+
   /* For the PDP-6 monitor, JBSA is the start address. */
   jbsa = get_word_at (memory, 0120);
   fprintf (output_file, "Start address (PDP-6): %06llo\n", jbsa & 0777777);
@@ -625,7 +627,7 @@ ntsddt_info (struct pdp10_memory *memory, int ddt)
   a = get_word_at (memory, a);
   syms = a >> 18;
   if (syms & 0400000)
-    syms |= -1 << 18;
+    syms |= ~0U << 18;
   syms = -syms;
   a &= 0777777;
 

timing_ki10.c

@@ -240,19 +240,7 @@ instruction_execution (word_t instruction)
 	case 000: /* JRST */	return 110;
 	case 001: /* PORTAL */	return 110;
 	case 002: /* JRSTF */	return 220;
-	case 003:		return -1000000;
-	case 004:		return -1000000;
-	case 005:		return -1000000;
-	case 006:		return -1000000;
-	case 007:		return -1000000;
-	case 010:		return -1000000;
-	case 011:		return -1000000;
-	case 012:		return -1000000;
-	case 013:		return -1000000;
-	case 014:		return -1000000;
-	case 015:		return -1000000;
-	case 016:		return -1000000;
-	case 017:		return -1000000;
+	default:		return -1000000;
 	}
     case 0255: /* JFCL */	return 110;
     case 0256: /* XCT */	return 110;