Add XXX comment about the delay port

diff --git a/sys/dev/isa/isa.c b/sys/dev/isa/isa.c
index 369285f..f85294f 100644 (file)
--- a/sys/dev/isa/isa.c
+++ b/sys/dev/isa/isa.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: isa.c,v 1.21 1996/12/09 09:27:06 niklas Exp $ */
+/*     $OpenBSD: isa.c,v 1.22 1997/01/04 14:14:55 niklas Exp $ */
 /*     $NetBSD: isa.c,v 1.85 1996/05/14 00:31:04 thorpej Exp $ */
 
 /*-
@@ -93,6 +93,7 @@ isaattach(parent, self, aux)
        /*
         * Map port 0x84, which causes a 1.25us delay when read.
         * We do this now, since several drivers need it.
+        * XXX this port doesn't exist on all ISA busses...
         */
        if (bus_space_map(sc->sc_iot, 0x84, 1, 0, &sc->sc_delaybah))
                panic("isaattach: can't map `delay port'");     /* XXX */