add a couple of comments.

sys/arch/sparc64/dev/cs4231_ebus.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: cs4231_ebus.c,v 1.1 1999/06/07 14:59:14 mrg Exp $	*/
+/*	$NetBSD: cs4231_ebus.c,v 1.2 2000/04/05 14:23:45 mrg Exp $	*/
 
 /*-
  * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
@@ -104,6 +104,12 @@ cs4231_attach_ebus(parent, self, aux)
 	sc->sc_ad1848.sc_writereg = cs4231_write;
 
 	/*
+	 * These are the register we get from the prom:
+	 *	- CS4231 registers
+	 *	- DMA (play)
+	 *	- DMA (write)
+	 *	- AUXIO audio registers 
+	 *
 	 * Map my registers in, if they aren't already in virtual
 	 * address space.
 	 */
@@ -120,6 +126,7 @@ cs4231_attach_ebus(parent, self, aux)
 			return;
 		}
 	}
+	/* XXX what to do with the DMA registers ? */
 
 	sc->sc_ad1848.sc_ioh = bh;
 	sc->sc_dmareg = (struct apc_dma *)(bh + CS4231_REG_SIZE);
@@ -132,8 +139,6 @@ cs4231_attach_ebus(parent, self, aux)
 
 	printf("\n");
 
-	/* sbus_establish(&sc->sc_ed, &sc->sc_ad1848.sc_dev); */
-
 	/* Establish interrupt channels */
 	for (i = 0; i < ea->ea_nintrs; i++)
 		bus_intr_establish(ea->ea_bustag,