From 42184213e9a1ddb48b238d37aae1852a15c6c46b Mon Sep 17 00:00:00 2001
From: Maxim Poliakovski <maximumspatium@googlemail.com>
Date: Sat, 23 Jan 2021 03:21:50 +0100
Subject: [PATCH] ppcexec: fix RC flag for subgroup 63.

---
 cpu/ppc/ppcexec.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cpu/ppc/ppcexec.cpp b/cpu/ppc/ppcexec.cpp
index 224ae16..38fb6a2 100644
--- a/cpu/ppc/ppcexec.cpp
+++ b/cpu/ppc/ppcexec.cpp
@@ -220,8 +220,8 @@ void ppc_opcode59() {
 }
 
 void ppc_opcode63() {
-    uint16_t subop_grab = (ppc_cur_instruction & 0x7FF) >> 1;
-    rc_flag             = subop_grab & 1;
+    uint16_t subop_grab = (ppc_cur_instruction >> 1) & 0x3FF;
+    rc_flag             = ppc_cur_instruction & 1;
 #ifdef EXHAUSTIVE_DEBUG
     uint32_t regrab = (uint32_t)subop_grab;
     LOG_F(INFO, "Executing Opcode 63 table subopcode entry \n", regrab);