From 001b314e067e52c32e9912c5fe479b589101fa37 Mon Sep 17 00:00:00 2001
From: yangkui <752544765@qq.com>
Date: Tue, 28 Nov 2023 22:28:34 +0800
Subject: [PATCH] :ambulance: Fix bug

---
 bin/src/main/java/cn/navclub/nes4j/bin/ppu/PPU.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bin/src/main/java/cn/navclub/nes4j/bin/ppu/PPU.java b/bin/src/main/java/cn/navclub/nes4j/bin/ppu/PPU.java
index 12a2cee..7415d37 100644
--- a/bin/src/main/java/cn/navclub/nes4j/bin/ppu/PPU.java
+++ b/bin/src/main/java/cn/navclub/nes4j/bin/ppu/PPU.java
@@ -212,7 +212,7 @@ public void tick() {
             this.render.tick();
             if (mapper.type() == NMapper.MMC3) {
                 var tmp = (this.v >> 12) & 1;
-                if ((this.PPU_A12 ^ 1 ^ tmp) == 0 && this.CpuM2 >= 3) {
+                if (this.PPU_A12 == 0 && tmp == 1 && this.CpuM2 >= 3) {
                     mapper.tick();
                 }
                 if ((tmp ^ this.PPU_A12) == 1) {