--- nono/vm/mpu88xx0.cpp	2026/04/29 17:05:18	1.1.1.13
+++ nono/vm/mpu88xx0.cpp	2026/04/29 17:05:25	1.1.1.14
@@ -274,113 +274,6 @@ MPU88xx0Device::SetFLineCallback(bool (*
 	fline_arg = arg;
 }
 
-// MPU からのアクセスをエミュレート
-uint64
-MPU88xx0Device::Read8(uint32 addr)
-{
-	return cmmu[1]->load_8(addr);
-}
-
-uint64
-MPU88xx0Device::Read16(uint32 addr)
-{
-	if ((addr & 1) == 0) {
-		return cmmu[1]->load_16(addr);
-	} else {
-		uint64 h, l;
-		h = Read8(addr);
-		if ((int64)h < 0) {
-			return h;
-		}
-		l = Read8(addr + 1);
-		if ((int64)l < 0) {
-			return l;
-		}
-		return (h << 8) | l;
-	}
-}
-
-uint64
-MPU88xx0Device::Read32(uint32 addr)
-{
-	if ((addr & 3) == 0) {
-		return cmmu[1]->load_32(addr);
-	} else if ((addr & 1) == 0) {
-		uint64 h, l;
-		h = Read16(addr);
-		if ((int64)h < 0) {
-			return h;
-		}
-		l = Read16(addr + 2);
-		if ((int64)l < 0) {
-			return l;
-		}
-		return (h << 16) | l;
-	} else {
-		uint64 h, m, l;
-		h = Read8(addr);
-		if ((int64)h < 0) {
-			return h;
-		}
-		m = Read16(addr + 1);
-		if ((int64)m < 0) {
-			return m;
-		}
-		l = Read8(addr + 3);
-		if ((int64)l < 0) {
-			return l;
-		}
-		return (h << 24) | (m << 8) | l;
-	}
-}
-
-uint64
-MPU88xx0Device::Write8(uint32 addr, uint32 data)
-{
-	return cmmu[1]->store_8(addr, data & 0xff);
-}
-
-uint64
-MPU88xx0Device::Write16(uint32 addr, uint32 data)
-{
-	if ((addr & 1) == 0) {
-		return cmmu[1]->store_16(addr, data & 0xffff);
-	} else {
-		uint64 r;
-		r = Write8(addr, data >> 8);
-		if ((int64)r < 0) {
-			return r;
-		}
-		return Write8(addr + 1, data);
-	}
-}
-
-uint64
-MPU88xx0Device::Write32(uint32 addr, uint32 data)
-{
-	if ((addr & 3) == 0) {
-		return cmmu[1]->store_32(addr, data);
-	} else if ((addr & 1) == 0) {
-		uint64 r;
-		r = Write16(addr, data >> 16);
-		if ((int64)r < 0) {
-			return r;
-		}
-		return Write16(addr + 2, data);
-	} else {
-		uint64 r;
-		r = Write8(addr, data >> 24);
-		if ((int64)r < 0) {
-			return r;
-		}
-		r = Write16(addr + 1, data >> 8);
-		if ((int64)r < 0) {
-			return r;
-		}
-		return Write8(addr + 3, data);
-	}
-}
-
 #define FA(val, bit)	TA::OnOff((val) & M88100::bit)
 
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