Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750?

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From	koehler@eisner.nospam.encompasserve.org (Bob Koehler)
Newsgroups	comp.sys.dec, comp.os.vms
Subject	Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750?
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Date	3 May 2011 08:13:35 -0500
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In article <ipo238$id3$1@Iltempo.Update.UU.SE>, Johnny Billquist <bqt@softjar.se> writes:
> 
> What??? Are you sure? The Unibus only have 18 address lines, which means 
> 256K addressable. And some of that is needed for I/O. I would be very 
> surprised if memory really sat on the Unibus.

   IIRC, the 730 and 725 were true UNIBUS systems, using the UNIBUS
   as the system bus, with all its limitations, just like my PDP-11/34 
   and 11/44.

   With virtual memory, who needs more than 265KB?  (These systems
   were not meant to be fast, real word processing doesn't need
   much.)

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RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? vaxorcist <vaxorcist@googlemail.com> - 2011-05-02 02:52 -0700
  Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? Johnny Billquist <bqt@softjar.se> - 2011-05-02 08:49 -0700
  Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? John Wallace <johnwallace4@yahoo.co.uk> - 2011-05-02 14:57 -0700
  Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? SeanOBanion <sean@obanion.us> - 2011-05-02 17:05 -0700
    Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? Johnny Billquist <bqt@softjar.se> - 2011-05-02 21:59 -0700
      Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? koehler@eisner.nospam.encompasserve.org (Bob Koehler) - 2011-05-03 08:13 -0500
        Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? Roger Ivie <rivie@ridgenet.net> - 2011-05-03 08:28 -0500
          Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? koehler@eisner.nospam.encompasserve.org (Bob Koehler) - 2011-05-03 12:34 -0500
            Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? Johnny Billquist <bqt@softjar.se> - 2011-05-03 22:50 -0700
              Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? koehler@eisner.nospam.encompasserve.org (Bob Koehler) - 2011-05-04 08:32 -0500
                Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? Johnny Billquist <bqt@softjar.se> - 2011-05-04 10:13 -0700
                Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? koehler@eisner.nospam.encompasserve.org (Bob Koehler) - 2011-05-04 12:22 -0500
                Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? Johnny Billquist <bqt@softjar.se> - 2011-05-04 20:25 -0700
                Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? koehler@eisner.nospam.encompasserve.org (Bob Koehler) - 2011-05-05 09:02 -0500
                Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? Johnny Billquist <bqt@softjar.se> - 2011-05-05 09:57 -0700
                Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? SeanOBanion <sean@obanion.us> - 2011-05-06 07:54 -0700
                Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? Johnny Billquist <bqt@update.uu.se> - 2011-05-06 10:00 -0700
                Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? Johnny Billquist <bqt@softjar.se> - 2011-05-05 10:01 -0700
                Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? koehler@eisner.nospam.encompasserve.org (Bob Koehler) - 2011-05-06 11:54 -0500
                Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? Johnny Billquist <bqt@update.uu.se> - 2011-05-06 10:05 -0700
        Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? Johnny Billquist <bqt@softjar.se> - 2011-05-03 08:44 -0700
          Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? koehler@eisner.nospam.encompasserve.org (Bob Koehler) - 2011-05-03 12:36 -0500
          Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? koehler@eisner.nospam.encompasserve.org (Bob Koehler) - 2011-05-03 12:42 -0500
      Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? SeanOBanion <sean@obanion.us> - 2011-05-03 09:38 -0700
        Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? SeanOBanion <sean@obanion.us> - 2011-05-03 09:48 -0700
          Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? John Wallace <johnwallace4@yahoo.co.uk> - 2011-05-03 10:35 -0700
            Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? BillPedersen <pedersen@ccsscorp.com> - 2011-05-03 10:47 -0700
          Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? Johnny Billquist <bqt@softjar.se> - 2011-05-03 23:09 -0700
  Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? ChrisQ <meru@devnull.com> - 2011-05-03 14:16 +0100
    Re: RB730 Integrated Disk Controller (R80/RL02) usable with VAX-11/750? koehler@eisner.nospam.encompasserve.org (Bob Koehler) - 2011-05-03 12:27 -0500

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