Changeset 54817 in vbox for trunk/src/VBox/Devices/Storage/DevATA.cpp

Timestamp:

Mar 17, 2015 5:12:44 PM (10 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

99016

Message:

DevATA: Allow 1-byte data reads.

File:

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

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

@@ -5901 +5901 @@
     {
         /* Reads from the data register may be 16-bit or 32-bit. */
-        Assert(cb == 2 || cb == 4);
-        rc = ataDataRead(pCtl, Port, cb, (uint8_t *)pu32);
-        if (cb == 2)
-            *pu32 &= 0xffff;
+        Assert(cb == 1 || cb == 2 || cb == 4);
+        rc = ataDataRead(pCtl, Port, cb == 1 ? 2 : cb, (uint8_t *)pu32);
+        if (cb <= 2)
+            *pu32 &= 0xffff >> (16 - cb * 8);
     }
     else