From 2d4fa02bbd47f4869f006c9ab35423b695e159fe Mon Sep 17 00:00:00 2001
From: mjbudd77 <mjbudd77@gmail.com>
Date: Mon, 31 Jan 2022 21:29:46 -0500
Subject: [PATCH] Minor change to MMC5 mapper to only call memory init on WRAM
 if it exists.

---
 src/boards/mmc5.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/boards/mmc5.cpp b/src/boards/mmc5.cpp
index ca641cd2..8015a12f 100644
--- a/src/boards/mmc5.cpp
+++ b/src/boards/mmc5.cpp
@@ -105,7 +105,7 @@ static uint8 *ExRAM = NULL;
 static uint8 MMC5battery = 0;
 
 const int MMC5WRAMMAX = 1<<7; // 7 bits in register interface (real MMC5 has only 4 pins, however)
-static uint8 MMC5WRAMsize; //configuration, not state
+static uint8 MMC5WRAMsize=0; //configuration, not state
 static uint8 MMC5WRAMIndex[MMC5WRAMMAX]; //configuration, not state
 
 static std::array<uint8,4> MMC5ROMWrProtect;
@@ -996,6 +996,7 @@ static SFORMAT MMC5_StateRegs[] = {
 static void GenMMC5_Init(CartInfo *info, int wsize, int battery) {
 	if (wsize) {
 		WRAM = (uint8*)FCEU_malloc(wsize * 1024);
+		FCEU_MemoryRand(WRAM, wsize * 1024);
 		SetupCartPRGMapping(0x10, WRAM, wsize * 1024, 1);
 		AddExState(WRAM, wsize * 1024, 0, "WRAM");
 	}
@@ -1003,7 +1004,6 @@ static void GenMMC5_Init(CartInfo *info, int wsize, int battery) {
 	MMC5fill = (uint8*)FCEU_malloc(1024);
 	ExRAM = (uint8*)FCEU_malloc(1024);
 
-	FCEU_MemoryRand(WRAM, MMC5WRAMsize * 8 * 1024);
 	FCEU_MemoryRand(MMC5fill,1024);
 	FCEU_MemoryRand(ExRAM,1024);