--- nono/vm/opm.cpp	2026/04/29 17:05:24	1.1.1.7
+++ nono/vm/opm.cpp	2026/04/29 17:05:37	1.1.1.9
@@ -29,10 +29,6 @@ OPMDevice::~OPMDevice()
 bool
 OPMDevice::Init()
 {
-	if (inherited::Init() == false) {
-		return false;
-	}
-
 	adpcm = GetADPCMDevice();
 	fdc = GetFDCDevice();
 
@@ -51,7 +47,7 @@ OPMDevice::ResetHard(bool poweron)
 }
 
 busdata
-OPMDevice::Read(uint32 offset)
+OPMDevice::ReadPort(uint32 offset)
 {
 	busdata data;
 
@@ -71,20 +67,21 @@ OPMDevice::Read(uint32 offset)
 		putlog(1, "STAT -> $%02x", data.Data());
 		break;
 	 default:
-		VMPANIC("corrupted offset=%d", offset);
+		VMPANIC("corrupted offset=%u", offset);
 		data = 0xff;
 		break;
 	}
 
 	// InsideOut p.135
-	const busdata read_wait = busdata::Wait(19 * 40_usec);
+	const busdata read_wait = busdata::Wait(19 * 40_nsec);
 	data |= read_wait;
 
+	data |= BusData::Size1;
 	return data;
 }
 
 busdata
-OPMDevice::Write(uint32 offset, uint32 data)
+OPMDevice::WritePort(uint32 offset, uint32 data)
 {
 	uint64 now = scheduler->GetVirtTime();
 
@@ -136,23 +133,31 @@ OPMDevice::Write(uint32 offset, uint32 d
 		}
 		break;
 	 default:
-		VMPANIC("corrupted offset=%d", offset);
+		VMPANIC("corrupted offset=%u", offset);
 		break;
 	}
 
 	// InsideOut p.135
 	const busdata write_wait = busdata::Wait(53 * 40_nsec);
 
-	return write_wait;
+	busdata r = write_wait;
+	r |= BusData::Size1;
+	return r;
 }
 
 busdata
-OPMDevice::Peek(uint32 offset)
+OPMDevice::PeekPort(uint32 offset)
 {
 	// XXX 未実装
 	return 0xff;
 }
 
+bool
+OPMDevice::PokePort(uint32 offset, uint32 data)
+{
+	return false;
+}
+
 // OPM ステータスレジスタの B (BUSY) ビット
 bool
 OPMDevice::IsBusy() const