diff --git a/include/c64/kernalio.c b/include/c64/kernalio.c
index 7b8e026..269f8b3 100644
--- a/include/c64/kernalio.c
+++ b/include/c64/kernalio.c
@@ -54,7 +54,7 @@ bool krnio_open(char fnum, char device, char channel)
 {
 	krnio_pstatus[fnum] = KRNIO_OK;
 
-	__asm
+	return __asm
 	{
 		lda	#0
 		sta accu
@@ -75,7 +75,7 @@ bool krnio_open(char fnum, char device, char channel)
 		lda	#1
 		sta	accu
 	E2:
-	}
+	};
 
 }
 
@@ -94,13 +94,13 @@ void krnio_close(char fnum)
 
 krnioerr krnio_status(void)
 {
-	__asm
+	return __asm
 	{
 		jsr $ffb7			// readst
 		sta accu
 		lda #0
 		sta accu + 1
-	}
+	};
 }
 
 #pragma native(krnio_status)
@@ -108,7 +108,7 @@ krnioerr krnio_status(void)
 
 bool krnio_load(char fnum, char device, char channel)
 {
-	__asm
+	return __asm
 	{
 		lda	fnum
 		ldx	device
@@ -124,14 +124,14 @@ bool krnio_load(char fnum, char device, char channel)
 		rol
 		eor #1
 		sta accu
-	}
+	};
 }
 
 #pragma native(krnio_load)
 
 bool krnio_save(char device, const char* start, const char* end)
 {
-	__asm
+	return __asm
 	{
 		lda	#0
 		ldx	device
@@ -147,14 +147,14 @@ bool krnio_save(char device, const char* start, const char* end)
 		rol
 		eor #1
 		sta accu
-	}
+	};
 }
 
 #pragma native(krnio_save)
 
 bool krnio_chkout(char fnum)
 {
-	__asm
+	return __asm
 	{
 		ldx fnum
 		jsr	$ffc9			// chkout
@@ -163,14 +163,14 @@ bool krnio_chkout(char fnum)
 		rol
 		eor #1
 		sta accu
-	}
+	};
 }
 
 #pragma native(krnio_chkout)
 
 bool krnio_chkin(char fnum)
 {
-	__asm
+	return __asm
 	{
 		ldx fnum
 		jsr	$ffc6			// chkin
@@ -179,7 +179,7 @@ bool krnio_chkin(char fnum)
 		rol
 		eor #1
 		sta accu
-	}
+	};
 }
 
 #pragma native(krnio_chkin)
@@ -196,23 +196,23 @@ void krnio_clrchn(void)
 
 bool krnio_chrout(char ch)
 {
-		__asm
+	return __asm
 	{
 		lda ch
 		jsr $ffd2		// chrout
 		sta accu
-	}
+	};
 }
 
 #pragma native(krnio_chrout)
 
 char krnio_chrin(void)
 {
-	__asm
+	return __asm
 	{
 		jsr $ffcf		// chrin
 		sta accu
-	}
+	};
 }
 
 #pragma native(krnio_chrin)
diff --git a/include/c64/kernalio.h b/include/c64/kernalio.h
index 8d29f64..44dcdfd 100644
--- a/include/c64/kernalio.h
+++ b/include/c64/kernalio.h
@@ -44,7 +44,7 @@ krnioerr krnio_status(void);
 
 bool krnio_load(char fnum, char device, char channel);
 
-__noinline bool krnio_save(char device, const char* start, const char* end);
+bool krnio_save(char device, const char* start, const char* end);
 
 // select the given file for stream output
 
diff --git a/oscar64/NativeCodeGenerator.cpp b/oscar64/NativeCodeGenerator.cpp
index cf168ca..524e9ce 100644
--- a/oscar64/NativeCodeGenerator.cpp
+++ b/oscar64/NativeCodeGenerator.cpp
@@ -802,6 +802,16 @@ bool NativeCodeInstruction::IsUsedResultInstructions(NumberSet& requiredTemps)
 			requiredTemps += mAddress;
 			requiredTemps += mAddress + 1;
 			break;
+
+		case ASMIM_IMMEDIATE:
+			if (mFlags & NICF_TMPREF)
+			{
+				if (mFlags & NCIF_LOWER)
+					requiredTemps += mAddress;
+				if (mFlags & NCIF_UPPER)
+					requiredTemps += mAddress + 1;
+			}
+			break;
 		}
 
 		// check carry flags
@@ -13330,13 +13340,23 @@ NativeCodeInstruction NativeCodeBasicBlock::DecodeNative(const InterInstruction*
 		address = lobj->mData[offset++];
 		if (lref)
 		{
-			d.mMode = ASMIM_IMMEDIATE_ADDRESS;
-			linkerObject = lref->mRefObject;
-			address = lref->mRefOffset;
-			if (lref->mFlags & LREF_LOWBYTE)
-				flags = NCIF_LOWER;
+			if (lref->mFlags & LREF_TEMPORARY)
+			{
+				address = lobj->mTemporaries[lref->mRefOffset];
+				flags |= NICF_TMPREF | NCIF_LOWER;
+				if (lobj->mTempSizes[lref->mRefOffset] > 1)
+					flags |= NCIF_UPPER;
+			}
 			else
-				flags = NCIF_UPPER;
+			{
+				d.mMode = ASMIM_IMMEDIATE_ADDRESS;
+				linkerObject = lref->mRefObject;
+				address = lref->mRefOffset;
+				if (lref->mFlags & LREF_LOWBYTE)
+					flags = NCIF_LOWER;
+				else
+					flags = NCIF_UPPER;
+			}
 		}
 		break;
 	}
diff --git a/oscar64/NativeCodeGenerator.h b/oscar64/NativeCodeGenerator.h
index f07b4da..82e6416 100644
--- a/oscar64/NativeCodeGenerator.h
+++ b/oscar64/NativeCodeGenerator.h
@@ -122,6 +122,7 @@ static const uint32 NCIF_FEXEC = 0x00000040;
 static const uint32 NCIF_JSRFLAGS = 0x00000080;
 static const uint32 NICT_INDEXFLIPPED = 0x00000100;
 static const uint32 NICT_ZPFLIPPED = 0x00000200;
+static const uint32 NICF_TMPREF = 0x00000400;
 
 static const uint32 NCIF_USE_CPU_REG_A = 0x00001000;
 static const uint32 NCIF_USE_CPU_REG_X = 0x00002000;