From 5d55d5b2589f6a7fb24bc2a1eb530e2f829d370b Mon Sep 17 00:00:00 2001
From: Peter Evans <peter@modul8r.com>
Date: Mon, 26 Mar 2018 23:10:57 -0500
Subject: [PATCH] Use a bitwise-and to determine carry

A bitwise-and is what we do in most (all?) other cases; it's a bit
jarring to read the current logic.
---
 src/mos6502.bits.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mos6502.bits.c b/src/mos6502.bits.c
index 829201d..7063410 100644
--- a/src/mos6502.bits.c
+++ b/src/mos6502.bits.c
@@ -38,7 +38,7 @@ DEFINE_INST(asl)
 
     MOS_CHECK_NZ(result);
     cpu->P &= ~MOS_CARRY;
-    if ((oper << 1) > 0xff) {
+    if (oper & 0x80) {
         cpu->P |= MOS_CARRY;
     }