diff --git a/oscar64/Declaration.cpp b/oscar64/Declaration.cpp
index 0100470..603c67c 100644
--- a/oscar64/Declaration.cpp
+++ b/oscar64/Declaration.cpp
@@ -575,7 +575,10 @@ Expression* Expression::ConstantFold(Errors * errors, LinkerSection * dataSectio
 					dec->mBase = TheUnsignedIntTypeDeclaration;
 				}
 				else
+				{
+					dec->mInteger &= 0xffffffff;
 					dec->mBase = TheUnsignedLongTypeDeclaration;
+				}
 
 				ex->mDecValue = dec;
 				ex->mDecType = dec->mBase;
diff --git a/oscar64/NativeCodeGenerator.cpp b/oscar64/NativeCodeGenerator.cpp
index 2a6f05c..bd23b25 100644
--- a/oscar64/NativeCodeGenerator.cpp
+++ b/oscar64/NativeCodeGenerator.cpp
@@ -24475,7 +24475,7 @@ bool NativeCodeBasicBlock::JoinTailCodeSequences(NativeCodeProcedure* proc, bool
 						changed = true;
 					}
 				}
-				else if (mIns[0].mType == ASMIT_LDA && mIns[0].mMode == ASMIM_ZERO_PAGE)
+				else if (mIns[0].mType == ASMIT_LDA && mIns[0].mMode == ASMIM_ZERO_PAGE && !(mIns[0].mLive & LIVE_CPU_REG_Z))
 				{
 					if (lblock->mIns[ls - 2].mType == ASMIT_LDA && lblock->mIns[ls - 2].mMode == ASMIM_ZERO_PAGE && lblock->mIns[ls - 2].mAddress == mIns[0].mAddress &&
 						lblock->mIns[ls - 1].mType == ASMIT_CMP)
@@ -47412,6 +47412,7 @@ bool NativeCodeBasicBlock::PeepHoleOptimizerIterate6(int i, int pass)
 		mIns[i + 0].mType = ASMIT_NOP; mIns[i + 0].mMode = ASMIM_IMPLIED;
 		mIns[i + 1].mType = ASMIT_NOP; mIns[i + 1].mMode = ASMIM_IMPLIED;
 		mIns[i + 2].mType = ASMIT_NOP; mIns[i + 2].mMode = ASMIM_IMPLIED;
+		mIns[i + 3].mLive |= LIVE_CPU_REG_C;
 		mIns[i + 4].mType = ASMIT_ROL;
 		mIns[i + 5].mType = ASMIT_NOP; mIns[i + 5].mMode = ASMIM_IMPLIED;
 		return true;
@@ -50685,7 +50686,7 @@ void NativeCodeProcedure::Compile(InterCodeProcedure* proc)
 	mInterProc = proc;
 	mInterProc->mLinkerObject->mNativeProc = this;
 
-	CheckFunc = !strcmp(mInterProc->mIdent->mString, "test");
+	CheckFunc = !strcmp(mInterProc->mIdent->mString, "intro_display");
 
 	int	nblocks = proc->mBlocks.Size();
 	tblocks = new NativeCodeBasicBlock * [nblocks];
@@ -52496,7 +52497,6 @@ void NativeCodeProcedure::Optimize(void)
 		else
 			cnt++;
 
-
 	} while (changed);
 
 #if 1