--- nono/debugger/debugger_m88xx0.cpp	2026/04/29 17:05:41	1.1.1.14
+++ nono/debugger/debugger_m88xx0.cpp	2026/04/29 17:05:49	1.1.1.15
@@ -409,7 +409,7 @@ r2 :0070e1a0  r10:00000000  r18:00000000
 		uint32 res = cpu->reg.r[cmp_rd];
 		for (int b = 11; b >= 2; b--) {
 			s.Print(57 + x * 7, y, "%x:%s=%u", b, cmpstr[b],
-				(res & (1 << b)) ? 1 : 0);
+				(res & (1U << b)) ? 1 : 0);
 			x++;
 			if (x > 2) {
 				x = 0;
@@ -542,11 +542,11 @@ DebuggerMD_m88xx0::ShowRegCache(FILE *co
 		errno = 0;
 		set = strtol(args[1].c_str(), &end, 16);
 		if (end == &args[1][0] || *end != '\0' || errno == ERANGE) {
-			fprintf(cons, "<set> must be a number\n");
+			fprintf(cons, "<set> must be a number.\n");
 			goto done;
 		}
 		if (set < 0 || set > 256) {
-			fprintf(cons, "<set> must be in 00..ff\n");
+			fprintf(cons, "<set> must be in 00..ff.\n");
 			goto done;
 		}
 		ShowRegCacheSet(cmmu, set);
@@ -651,7 +651,7 @@ DebuggerMD_m88xx0::Disassemble(DebuggerM
 {
 	m88100disasm dis;
 	if (dis.Exec(&mem) == false) {
-		return "dis.Exec() failed";
+		return "dis.Exec() failed.";
 	}
 
 	// ニーモニック
@@ -716,7 +716,7 @@ DebuggerMD_m88xx0::CondStr(uint32 op)
 		// rS の bit B が %0 ならブランチ/トラップ
 		cmp_rd = -1;
 		uint32 b = m88100opf_B5(op);
-		TAKE_IF((cpu->reg.r[s] & (1 << b)) == 0);
+		TAKE_IF((cpu->reg.r[s] & (1U << b)) == 0);
 	}
 	if (IsBB1(op)) {
 		// 11011N BBBBB SSSSS dddddd dd dddddddd	bb1
@@ -727,7 +727,7 @@ DebuggerMD_m88xx0::CondStr(uint32 op)
 			return " (nop)";
 		}
 		uint32 b = m88100opf_B5(op);
-		TAKE_IF((cpu->reg.r[s] & (1 << b)) != 0);
+		TAKE_IF((cpu->reg.r[s] & (1U << b)) != 0);
 	}
 	if (IsTB1(op)) {
 		// 111100 BBBBB SSSSS 110110 0V VVVVVVVV	tb1
@@ -739,7 +739,7 @@ DebuggerMD_m88xx0::CondStr(uint32 op)
 			return "";
 		}
 		uint32 b = m88100opf_B5(op);
-		TAKE_IF((cpu->reg.r[s] & (1 << b)) != 0);
+		TAKE_IF((cpu->reg.r[s] & (1U << b)) != 0);
 	}
 	if ((op & 0xf8000000) == 0xe8000000 ||	// bcnd
 	    (op & 0xfc00fe00) == 0xf000e800)	// tcnd
@@ -767,3 +767,13 @@ DebuggerMD_m88xx0::CondStr(uint32 op)
 
 	return "";
 }
+
+// 命令ニーモニックに対するバイナリを文字列形式で返す。
+// 対応しない場合は "" を返す。cmd_bi 用。
+std::string
+DebuggerMD_m88xx0::ParseInst(const std::string& inst) const
+{
+	if (inst == "rte")		return "f400fc00";
+
+	return "";
+}