Changeset 45974 in vbox for trunk/src/VBox/Devices/Storage

Timestamp:

May 9, 2013 10:18:45 PM (12 years ago)

Author:

vboxsync

Message:

DevATA: Return no data for status register if no device on channel present.

File:

• trunk/src/VBox/Devices/Storage/DevATA.cpp (modified) (1 diff)

trunk/src/VBox/Devices/Storage/DevATA.cpp

@@ -4506 +4506 @@
     uint32_t val;
 
-    if ((!pCtl->aIfs[0].pDrvBlock && !pCtl->aIfs[1].pDrvBlock) ||
-            (pCtl->iSelectedIf == 1 && !s->pDrvBlock))
-        val = 0;
+    //@todo: The handler should not be even registered if there
+    // is no device on an IDE channel.
+    if (!pCtl->aIfs[0].pDrvBlock && !pCtl->aIfs[1].pDrvBlock)
+        val = 0xff;
+    else if (pCtl->iSelectedIf == 1 && !s->pDrvBlock)
+        val = 0;    /* Device 1 selected, Device 0 responding for it. */
     else
         val = s->uATARegStatus;