From: Serge Gautherie <reactos-git_serge_fake@gautherie.fr>
Date: Wed, 4 Jan 2017 12:46:37 +0100
Subject: [FREELDR]
freeldr\arch\i386\hardware.c:
*Add a TRACE() to 'NodeCount &= 0xFF;' workaround.
CORE-12624


diff --git a/reactos/boot/freeldr/freeldr/arch/i386/hardware.c b/reactos/boot/freeldr/freeldr/arch/i386/hardware.c
index b9f222d..dbee8b9 100644
--- a/reactos/boot/freeldr/freeldr/arch/i386/hardware.c
+++ b/reactos/boot/freeldr/freeldr/arch/i386/hardware.c
@@ -262,9 +262,18 @@ DetectPnpBios(PCONFIGURATION_COMPONENT_DATA SystemKey, ULONG *BusNumber)
         return;
     }
 
-    NodeCount &= 0xFF; // needed since some fscked up BIOSes return
-    // wrong info (e.g. Mac Virtual PC)
-    // e.g. look: http://my.execpc.com/~geezer/osd/pnp/pnp16.c
+    // BetterDocumentMe: see CORE-12624.
+    if (NodeCount > 0xFF)
+    {
+        TRACE("PnP-BIOS returned wrong NodeCount (0x%x)! Applying '& 0xFF'.\n",
+              NodeCount);
+
+        // Needed since some fscked up BIOSes return wrong info.
+        //   (e.g. Mac Virtual PC)
+        // e.g. look: http://my.execpc.com/~geezer/osd/pnp/pnp16.c
+        NodeCount &= 0xFF;
+    }
+
     if (x != 0 || NodeSize == 0 || NodeCount == 0)
     {
         ERR("PnP-BIOS failed to enumerate device nodes\n");