Mention onboard USB might be disabled on XP1000 and close relatives, and how

to enable it if necessary. From FreeBSD.

diff --git a/distrib/notes/alpha/prep b/distrib/notes/alpha/prep
index 15caedc..231985b 100644 (file)
--- a/distrib/notes/alpha/prep
+++ b/distrib/notes/alpha/prep
@@ -1,4 +1,4 @@
-dnl    $OpenBSD: prep,v 1.27 2008/08/06 17:22:14 miod Exp $
+dnl    $OpenBSD: prep,v 1.28 2008/08/06 20:29:49 miod Exp $
 OpenBSD/MACHINE requires the SRM console.  Some alphas come with
 the AlphaBIOS (also known as the ARC firmware on older machines) instead;
 this is what Windows NT uses. It is fairly simple to replace the AlphaBIOS
@@ -114,6 +114,18 @@ Using the SRM console:
     versions of the SRM console (mainly on DEC 3000 series) will only let
     you specify uppercase filenames.
 
+USB support on the XP1000:
+
+    For some unknown reason, the USB interface found on the XP1000
+    (and possibly the XP900 and the XP1100) is not enabled unless a
+    specific SRM environment variable is set.
+
+    If you plan to use USB devices on these machines, enter
+       set usb_enable on
+    at the SRM prompt, followed by
+       init
+    before attempting to install OpenBSD.
+
 SRM console boot device restrictions:
 
     The SRM firmware on your system may or may not be able to boot from