From 2429bb789137de2861dd800d95ba8a4db3917a36 Mon Sep 17 00:00:00 2001
From: Volker Ruppert <Volker.Ruppert@t-online.de>
Date: Sat, 12 Sep 2020 12:24:46 +0000
Subject: [PATCH] Banshee: Fixed video memory offset calculation for tiled LFB
 space writes.

---
 bochs/iodev/display/banshee.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bochs/iodev/display/banshee.cc b/bochs/iodev/display/banshee.cc
index 0a7cb22c9..783dab5c7 100644
--- a/bochs/iodev/display/banshee.cc
+++ b/bochs/iodev/display/banshee.cc
@@ -918,7 +918,7 @@ void bx_banshee_c::mem_write_linear(Bit32u offset, Bit32u value, unsigned len)
     pitch *= 128;
     x = (offset << 0) & ((1 << v->fbi.lfb_stride) - 1);
     y = (offset >> v->fbi.lfb_stride) & 0x7ff;
-    offset = (start + y * pitch + x) & v->fbi.mask;
+    offset = (v->fbi.lfb_base + y * pitch + x) & v->fbi.mask;
   } else {
     offset &= v->fbi.mask;
   }