From 437ddc96fc0a14308586fbb390c934c1c405e284 Mon Sep 17 00:00:00 2001
From: Shwartsman <stanislav.shwartsman@intel.com>
Date: Wed, 24 Jan 2024 17:04:21 +0200
Subject: [PATCH] Addressing Black screen in Descent II: Destination Quartzon
 3dfx OEM with Voodoo #238

---
 bochs/iodev/display/voodoo.cc | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/bochs/iodev/display/voodoo.cc b/bochs/iodev/display/voodoo.cc
index f16b3e333..2b6ab77fa 100644
--- a/bochs/iodev/display/voodoo.cc
+++ b/bochs/iodev/display/voodoo.cc
@@ -1004,9 +1004,12 @@ void bx_voodoo_1_2_c::after_restore_state(void)
 bool bx_voodoo_1_2_c::mem_read_handler(bx_phy_address addr, unsigned len,
                                        void *data, void *param)
 {
-  Bit32u *data_ptr = (Bit32u*)data;
+  Bit32u val = voodoo_r((addr>>2) & 0x3FFFFF);
+  if (len == 4)
+    *(Bit32u*)data = val;
+  else if (len == 1)
+    *(Bit8u*)data = val >> ((addr & 3) * 8);
 
-  *data_ptr = voodoo_r((addr>>2) & 0x3FFFFF);
   return 1;
 }