Re: QBUS Prototyping

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From	koehler@eisner.nospam.encompasserve.org (Bob Koehler)
Newsgroups	alt.sys.pdp11, comp.sys.dec, comp.os.vms
Subject	Re: QBUS Prototyping
Message-ID	<A$4TJa9Ngfq2@eisner.encompasserve.org> (permalink)
Date	18 Apr 2011 08:00:11 -0500
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In article <FgC+HafqKJY6@eisner.encompasserve.org>, koehler@eisner.nospam.encompasserve.org (Bob Koehler) writes:
> 
>    I never had a PDP-11 with less than 18 bit address space.
>    Instructions could only access 16 bits of it at a time, but the
>    hardware was there to make use of the rest of it.

   Maybe you didn't, but many of us did.  And on PDP-11 with 18
   bit UNIBUS, we had some systems which were limitted to 16 bit RAM.
   (By design, not by purchase).

   No APRs, no need for them.

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Re: QBUS Prototyping koehler@eisner.nospam.encompasserve.org (Bob Koehler) - 2011-04-18 08:00 -0500
  Re: QBUS Prototyping Johnny Billquist <bqt@softjar.se> - 2011-04-18 08:06 -0700

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