fix status flag bug in ASL and ROL

1 files changed, 3 insertions, 2 deletions

diff --git a/cpu.c b/cpu.c
index a4be93c..a3b622e 100644
--- a/cpu.c
+++ b/cpu.c
@@ -204,7 +204,8 @@ ASL(uint16_t mem)
         memwrite(mem, tmp & 0xFF);
 
         regs.status.carry = tmp > 0xFF;
-        STATUS_UPDATE_NZ(tmp);
+        regs.status.negative = (tmp & (1 << 7)) != 0;
+        regs.status.zero = (tmp << 1 & 0xFF) == 0;
 }
 
 void
@@ -536,7 +537,7 @@ ROL(uint16_t mem)
         memwrite(mem, tmp);
 
         regs.status.carry = carry;
-        STATUS_UPDATE_NZ(regs.a);
+        STATUS_UPDATE_NZ(tmp);
 }
 
 void