1 files changed, 1 insertions, 0 deletions
diff --git a/hw/cs4231a.c b/hw/cs4231a.c
index 4d5ce5c277..598f0322d9 100644
--- a/hw/cs4231a.c
+++ b/hw/cs4231a.c
@@ -645,6 +645,7 @@ static int cs4231a_initfn (ISADevice *dev)
     isa_init_irq (dev, &s->pic, s->irq);
 
     for (i = 0; i < 4; i++) {
+        isa_init_ioport(dev, i);
         register_ioport_write (s->port + i, 1, 1, cs_write, s);
         register_ioport_read (s->port + i, 1, 1, cs_read, s);
     }