Here's some info from DEC...
http://ftp.europe.digital.com/pub/DEC/axppci/

Com 1 and 2 are the pair by the keyboard connector. If you have PS/2 key +
mouse, the keyboard is the one closer to the com port headers.

from the AXPpci33 Design Guide...
Pin:
1	DCD
2	Serial In
3	Serial Out
4	DTR
5	Ground
6	DSR
7	RTS
8	CTS
9	RI
10	No Pin Installed

---   David A Woyciesjes
---   C & IS Support Specialist
---   Yale University Press
---   mailto:david.woyciesjes@yale.edu
---   (203) 432-0953
---   ICQ # - 905818


! -----Original Message-----
! From: Ghering Paul [mailto:Paul.Ghering@Centric.nl]
! Sent: Tuesday, July 24, 2001 12:35 PM
! To: 'David Woyciesjes'
! Cc: 'port-alpha@netbsd.org'
! Subject: RE: blank-blue-screen on AXPPCI33
! 
! 
! The board come without serial brackets. But I think you can 
! use standard PC
! serial brackets if the pin layout is the same. But I can't 
! find out wich one
! to use, there are 3 connectors where a serial connector fits. 
! one between
! the PCI slots and two between the bios and first PCI slot. 
! Think this are
! the serial ports. But wich one I have to use?
! 
! -----Oorspronkelijk bericht-----
! Van: David Woyciesjes [mailto:DAW@yalepress3.unipress.yale.edu]
! Verzonden: dinsdag 24 juli 2001 18:20
! Aan: 'Ghering Paul'; David Woyciesjes
! CC: 'port-alpha@netbsd.org'
! Onderwerp: RE: blank-blue-screen on AXPPCI33
! 
! 
! Have you tried hooking a terminal up to the serial port? 
! 9600/8/none/1 ...
! 
! Good thing you have the cache. It'd be a bit slower otherwise...
! 
! ---   David A Woyciesjes
! ---   C & IS Support Specialist
! ---   Yale University Press
! ---   mailto:david.woyciesjes@yale.edu
! ---   (203) 432-0953
! ---   ICQ # - 905818
! 
! 
! ! -----Original Message-----
! ! From: Ghering Paul [mailto:Paul.Ghering@Centric.nl]
! ! Sent: Tuesday, July 24, 2001 11:52 AM
! ! To: 'David Woyciesjes'
! ! Cc: 'port-alpha@netbsd.org'
! ! Subject: RE: blank-blue-screen on AXPPCI33
! ! 
! ! 
! ! The ctrl-alt-del didn't work. But there are 11 cachechips in it.
! ! 
! ! -----Oorspronkelijk bericht-----
! ! Van: David Woyciesjes [mailto:DAW@yalepress3.unipress.yale.edu]
! ! Verzonden: dinsdag 24 juli 2001 16:12
! ! Aan: 'Ghering Paul'; 'port-alpha@netbsd.org'
! ! Onderwerp: RE: blank-blue-screen on AXPPCI33
! ! 
! ! 
! ! 	Sounds familiar to me. Same sort of thing. Try hitting
! ! [Ctrl][Alt][Del]. It's not documented anywhere, from what I 
! ! (and others)
! ! have seen, but it seemed to work.
! ! 	BTW, do you have any cahce chips in it? (set of 11 
! ! sockets on the
! ! board)
! ! 
! ! ---   David A Woyciesjes
! ! ---   C & IS Support Specialist
! ! ---   Yale University Press
! ! ---   mailto:david.woyciesjes@yale.edu
! ! ---   (203) 432-0953
! ! ---   ICQ # - 905818
! ! 
! ! 
! ! ! -----Original Message-----
! ! ! From: Ghering Paul [mailto:Paul.Ghering@Centric.nl]
! ! ! Sent: Tuesday, July 24, 2001 10:04 AM
! ! ! To: 'port-alpha@netbsd.org'
! ! ! Subject: blank-blue-screen on AXPPCI33
! ! ! 
! ! ! 
! ! ! Hello,
! ! ! 
! ! ! I recently bought an Alpha system with AXPPCI33 systemboard 
! ! ! with MILO loaded
! ! ! in flash. To install NetBSD on this system I will need the 
! ! ! SRM-console. So I
! ! ! created(?) the failsafe bootflop from fwupdate.exe and 
! ! mkboot.exe and
! ! ! changed the jumper thing. When I powerup my system it will 
! ! start from
! ! ! floppy, after I while the videobios is shown for a short time 
! ! ! and the screen
! ! ! is turning blue with the flashing cursorline in the top left 
! ! ! corner. from
! ! ! this point nothing happens. Do I forget something at this 
! ! ! point. I tried
! ! ! everything to create the failsafe floppy on different 
! ways(fdimage,
! ! ! makeboot)with the files provided on gatekeeper.dec.com and 
! ! the Compaq
! ! ! firmware CD, but the result is always the same. The milo 
! ! ! failsafe loader
! ! ! from floppy with image milo.dd is loading just fine, but lacks the
! ! ! possibility to update the flash with SRM (right?).
! ! ! My configuration is AXPPCI33 with 166Mhz Alpha, Diamond PCI 
! ! ! Stealth, 4x4MB
! ! ! 36bit (upgrade is planned),floppy, 1.1GB SCSI-2 HDD and MILO 
! ! ! 2.0.30 loaded
! ! ! in flash.
! ! ! I 'm sure there must be a solution for this, Can anybody help me?
! ! ! 
! ! 
!