From 9e19ed1576bdd4ba330e3c8f78667e9fd97e8103 Mon Sep 17 00:00:00 2001
From: NewRisingSun <8vytz1+dhp372pv94ebg@sharklasers.com>
Date: Fri, 25 Apr 2025 18:44:05 +0200
Subject: [PATCH] Update mapper 315.

---
 src/boards/476.c     | 12 ++++++------
 src/boards/830134C.c |  4 ++--
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/src/boards/476.c b/src/boards/476.c
index 3eb3bd2..247ae5e 100644
--- a/src/boards/476.c
+++ b/src/boards/476.c
@@ -49,18 +49,18 @@ static DECLFR(remapButtons) {
 			result <<=1;
 			result |=read4016(0x4016) &1;
 		}
-		result =(result &0x90? 0x01: 0x00) |   // START/A
-		        (result &0x60? 0x02: 0x00)   ; // SELECT/B
+		result =(result &0x90? 0x01: 0x00) |   /* START/A */
+		        (result &0x60? 0x02: 0x00)   ; /* SELECT/B */
 	} else
 	if (A ==0x4017) {
 		for (int i =0; i <8; i++) {
 			result <<=1;
 			result |=read4016(0x4016) &1;
 		}
-		result =(result &0x04? 0x08: 0x00) | // DOWN
-		        (result &0x08? 0x02: 0x00) | // UP
-			(result &0x02? 0x04: 0x00) | // LEFT
-			(result &0x01? 0x10: 0x00)   // RIGHT
+		result =(result &0x04? 0x08: 0x00) | /* DOWN  */
+		        (result &0x08? 0x02: 0x00) | /* UP    */
+			(result &0x02? 0x04: 0x00) | /* LEFT  */
+			(result &0x01? 0x10: 0x00)   /* RIGHT */
 		;
 	}
 	return result;
diff --git a/src/boards/830134C.c b/src/boards/830134C.c
index 5637c7a..711eb93 100644
--- a/src/boards/830134C.c
+++ b/src/boards/830134C.c
@@ -32,7 +32,7 @@ static void BMC830134CCW(uint32 A, uint8 V) {
 }
 
 static void BMC830134CPW(uint32 A, uint8 V) {
-	if ((EXPREGS[0] & 0x06) == 0x06) {
+	if (EXPREGS[0] & 0x08) {
 		if (A == 0x8000) {
 			setprg8(A, (V & 0x0F) | ((EXPREGS[0] & 0x06) << 3));
 			setprg8(0xC000, (V & 0x0F) | 0x32);
@@ -45,7 +45,7 @@ static void BMC830134CPW(uint32 A, uint8 V) {
 }
 
 static DECLFW(BMC830134CWrite) {
-	EXPREGS[0] = V;
+	EXPREGS[0] = A &0xFF;
 	FixMMC3PRG(MMC3_cmd);
 	FixMMC3CHR(MMC3_cmd);
 }