Changeset 14631 in vbox for trunk/src

Timestamp:

Nov 26, 2008 11:00:55 AM (16 years ago)

Author:

vboxsync

Message:

implemented better DRAM refresh rate esteemation, disabled yet due
to timer starvation

File:

• trunk/src/VBox/Devices/PC/DevPit-i8254.cpp (modified) (1 diff)

trunk/src/VBox/Devices/PC/DevPit-i8254.cpp

@@ -653 +653 @@
         const int fRefresh = pThis->dummy_refresh_clock;
 #else
-        const int fRefresh = (u64Now / 15085 ) & 1;
+        /* To make refresh info statistically correct */
+        const int freq = 15085;
+        const int fRefresh = ((u64Now % freq ) > (freq / 2)) ? 1 : 0;
+        LogRel(("unow=%lld\n", u64Now));
 #endif
         /* bit 2,3 NMI / parity status stuff. */