From f627b5774a8b876191a0e6b1db0d3df39872481e Mon Sep 17 00:00:00 2001
From: Eknous-P <ehovakimyan053@gmail.com>
Date: Tue, 20 May 2025 22:15:34 +0400
Subject: [PATCH] fix fb confilcts

---
 src/engine/platform/genesis.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/engine/platform/genesis.cpp b/src/engine/platform/genesis.cpp
index 2ef13b1aa..c03f56445 100644
--- a/src/engine/platform/genesis.cpp
+++ b/src/engine/platform/genesis.cpp
@@ -1541,7 +1541,8 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
       break;
     case DIV_CMD_FM_ALG:
       if (c.value>7) break;
-      rWrite(ADDR_FB_ALG+chanOffs[c.chan], c.value&7);
+      chan[c.chan].state.alg=c.value&7;
+      rWrite(ADDR_FB_ALG+chanOffs[c.chan], (chan[c.chan].state.fb&7<<3)|(chan[c.chan].state.alg&7));
     default:
       //printf("WARNING: unimplemented command %d\n",c.cmd);
       break;