From dfdec490072b4634dc95576fa34e3a656d228991 Mon Sep 17 00:00:00 2001
From: folkert van heusden <mail@vanheusden.com>
Date: Thu, 28 Mar 2024 22:56:11 +0100
Subject: [PATCH] According to page 67 of PDP1120_Handbook_1972.pdf, BIC and
 BICB shall clear the V flag when invoked.

---
 op4.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/op4.py b/op4.py
index ae45ce2..4149e99 100644
--- a/op4.py
+++ b/op4.py
@@ -150,6 +150,7 @@ def op04_bic(cpu, inst, opsize=2):
 
     cpu.psw_n = dst & cpu.SIGN816[opsize]
     cpu.psw_z = (dst == 0)
+    cpu.psw_v = 0
 
     cpu.operandx(xb6, dst, opsize=opsize)