--- nono/vm/pio.cpp	2026/04/29 17:05:33	1.1.1.15
+++ nono/vm/pio.cpp	2026/04/29 17:05:38	1.1.1.16
@@ -345,10 +345,6 @@ PIO0Device::~PIO0Device()
 bool
 PIO0Device::Init()
 {
-	if (inherited::Init() == false) {
-		return false;
-	}
-
 	interrupt = GetInterruptDevice();
 	pio1 = GetPIO1Device();
 
@@ -528,7 +524,7 @@ PIO0Device::GetPA() const
 		data |= ((int)dipsw1[i]) << i;
 	}
 	if (msb_first) {
-		data = bitrev(data);
+		data = bitrev8(data);
 	}
 	return data & 0xff;
 }
@@ -542,7 +538,7 @@ PIO0Device::GetPB() const
 		data |= ((int)dipsw2[i]) << i;
 	}
 	if (msb_first) {
-		data = bitrev(data);
+		data = bitrev8(data);
 	}
 	return data & 0xff;
 }
@@ -665,10 +661,6 @@ PIO1Device::~PIO1Device()
 bool
 PIO1Device::Init()
 {
-	if (inherited::Init() == false) {
-		return false;
-	}
-
 	lcd = GetLCDDevice();
 	mpu64180 = GetMPU64180Device();
 	powerdev = GetPowerDevice();