--- nono/m88xx0/m88100ops.cpp	2026/04/29 17:04:44	1.1.1.5
+++ nono/m88xx0/m88100ops.cpp	2026/04/29 17:04:49	1.1.1.7
@@ -41,7 +41,38 @@
 #define FP_TD	m88100opf_FP_TD(opX)
 
 // XXX: 暫定
-#include "fp.h"
+static float
+u2f(uint32 u)
+{
+	float v;
+	memcpy(&v, &u, 4);
+	return v;
+}
+
+static double
+u2d(uint64 u)
+{
+	double v;
+	memcpy(&v, &u, 8);
+	return v;
+}
+
+static uint32
+f2u(float v)
+{
+	uint32 u;
+	memcpy(&u, &v, 4);
+	return u;
+}
+
+static uint64
+d2u(double v)
+{
+	uint64 u;
+	memcpy(&u, &v, 8);
+	return u;
+}
+
 #define FP_GET(v, t, n)	\
 do {	\
 	if (t == 0) {	\
@@ -323,7 +354,7 @@ OP_DEF(xmem_bu_imm)
 	AddCycle(4);	// Table.7-3
 
 	lastaddr = addr;
-	tmp = cmmu[1].xmem_8(addr, rD);
+	tmp = cmmu[1].xmem_8(addr, rD & 0xff);
 	if ((int64)tmp < 0) {
 		XmemDataException(addr, DM_BU | DM_LOCK);
 		return;
@@ -1069,7 +1100,6 @@ OP_DEF(trnc)
 	}
 
 	FP_GET(s2, FP_T2, FLD_S2);
-printf("trunc(%f) => %f\n", s2, std::trunc(s2));
 	rD = (uint32)(int32)std::trunc(s2);
 }
 
@@ -1300,7 +1330,7 @@ OP_DEF(xmem_bu)
 
 	// 例外安全のために都度 S/U ビットを制御
 	if (__predict_false(usr)) cmmu[1].SetSuper(false);
-	tmp = cmmu[1].xmem_8(addr, rD);
+	tmp = cmmu[1].xmem_8(addr, rD & 0xff);
 	if (__predict_false(usr)) cmmu[1].SetSuper(true);
 	if ((int64)tmp < 0) {
 		XmemDataException(addr, DM_BU | DM_LOCK | usr);