From c4a184e2c6716ff05f474733544586eb501285f9 Mon Sep 17 00:00:00 2001
From: Robbbert <Robbbert@users.noreply.github.com>
Date: Wed, 12 Aug 2020 23:28:43 +1000
Subject: [PATCH] z8: fixed bug in decimal adjust. Fixes PRINT 654 in bert.

---
 src/devices/cpu/z8/z8ops.hxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/devices/cpu/z8/z8ops.hxx b/src/devices/cpu/z8/z8ops.hxx
index 51172f2d142..22934842657 100644
--- a/src/devices/cpu/z8/z8ops.hxx
+++ b/src/devices/cpu/z8/z8ops.hxx
@@ -325,7 +325,7 @@ void z8_device::decimal_adjust(uint8_t dst)
 		if (flag(C) | (data>0x99)) new_data+=0x60;
 	}
 
-	set_flag_c(new_data & 0x100);
+	set_flag_c(flag(C)|(new_data & 0x100));
 	set_flag_s(new_data & 0x80);
 	new_data &= 0xff;
 	set_flag_z(new_data == 0);