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-rw-r--r--hw/dma/rc4030.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/dma/rc4030.c b/hw/dma/rc4030.c
index 17c8518fea..41fc043464 100644
--- a/hw/dma/rc4030.c
+++ b/hw/dma/rc4030.c
@@ -460,7 +460,7 @@ static void rc4030_write(void *opaque, hwaddr addr, uint64_t data,
         break;
     /* Interval timer reload */
     case 0x0228:
-        s->itr = val;
+        s->itr = val & 0x01FF;
         qemu_irq_lower(s->timer_irq);
         set_next_tick(s);
         break;