Talk about updating console from ARC -> SRM

Should also talk about SRM console variables somewhere.

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+OpenBSD/alpha requires the SRM console.  Some alphas come with
+the ARC firmware instead (this is what Windows NT uses).  It is
+fairly simple to replace the ARC firmware with the SRM version.
+You can get replacement firmware either from a firmware update
+CD or via ftp from ftp://ftp.digital.com/pub/DEC/Alpha/firmware/.
+
+As of May, 1997, the latest firmware version available for
+ftp is version 3.9.  To update an alpha with an axppci33
+motherboard from ARC firmware to SRM one would ftp to
+ftp.digital.com and download
+    /pub/DEC/Alpha/firmware/v3.9/decaxppci33/decaxppci33_v1_6.exe
+then copy it to a FAT-formatted (ie: DOS) floppy with the name
+FWUPDATE.EXE.  Now that you have your new firmware on a floppy
+you just need to insert it into your machine's floppy drive and
+turn on the machine.  To actually update the firmware you need to
+choose the "Supplementary menu" from the ARC console and then
+"Install new firmware".  After fwupdate.exe is done loading from
+the floppy, enter "update srm" at the prompt and hit return.
+After the update is complete you may want to verify the update
+(if this was not done automatically) by entering "verify srm" at
+the prompt.  Once this is done you can enter "exit" and cycle power
+on your machine.  When it reboots you should be in the SRM console.