From dfec2468ff106556e035c8e702edf5a7d0e50e68 Mon Sep 17 00:00:00 2001
From: Michael Pavone <pavone@retrodev.com>
Date: Wed, 6 Feb 2019 08:54:09 -0800
Subject: Fixes to DAA, SCF and CCF to pass ZEXALL in new Z80 core

---
 cpu_dsl.py | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

(limited to 'cpu_dsl.py')

diff --git a/cpu_dsl.py b/cpu_dsl.py
index 928681b..070efbe 100755
--- a/cpu_dsl.py
+++ b/cpu_dsl.py
@@ -468,10 +468,11 @@ def _cmpCImpl(prog, params, rawParams, flagUpdates):
 	if needsCarry:
 		size *= 2
 	tmpvar = 'cmp_tmp{sz}__'.format(sz=size)
-	prog.carryFlowDst = tmpvar
-	prog.lastA = params[1]
-	prog.lastB = params[0]
-	prog.lastBFlow = params[0]
+	if flagUpdates:
+		prog.carryFlowDst = tmpvar
+		prog.lastA = params[1]
+		prog.lastB = params[0]
+		prog.lastBFlow = params[0]
 	scope = prog.getRootScope()
 	if not scope.resolveLocal(tmpvar):
 		scope.addLocal(tmpvar, size)
-- 
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