From d65986c619914d55943c668c44164619713c31b0 Mon Sep 17 00:00:00 2001
From: Neil Webber <neil@webber.com>
Date: Mon, 1 Apr 2024 10:16:37 -0500
Subject: [PATCH] MFPI same bug as MTPI

---
 op00.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/op00.py b/op00.py
index 9450afb..dfe1e2b 100644
--- a/op00.py
+++ b/op00.py
@@ -263,7 +263,7 @@ def op00_65_mfpi(cpu, inst, opsize=2):
         pival = cpu.stackpointers[prvm]
     else:
         pival = cpu.operandx(inst & 0o77, altmode=prvm, altspace=space)
-    cpu.psw_n = pival & cpu.MASK16
+    cpu.psw_n = pival & cpu.SIGN16
     cpu.psw_z = (pival == 0)
     cpu.psw_v = 0
     cpu.stackpush(pival)