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diff --git a/Documentation/cdrom/mcdx b/Documentation/cdrom/mcdx
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+If you are using the driver as a module, you can specify your ports and IRQs
+like
+
+ # insmod mcdx.o mcdx=0x300,11,0x304,5
+
+and so on ("address,IRQ" pairs).
+This will override the configuration in mcdx.h.
+
+This driver:
+
+    o   handles XA and (hopefully) multi session CDs as well as
+        ordinary CDs;
+    o   supports up to 5 drives (of course, you'll need free 
+        IRQs, i/o ports and slots);
+    o   plays audio
+
+This version doesn't support yet:
+
+    o   shared IRQs (but it seems to be possible - I've successfully
+                connected two drives to the same irq.  So it's `only' a 
+                problem of the driver.)
+
+This driver never will:
+
+    o   Read digital audio (i.e. copy directly), due to missing
+        hardware features. 
+
+
+heiko@lotte.sax.de