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Re: QBUS Prototyping

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From moroney@world.std.spaamtrap.com (Michael Moroney)
Newsgroups alt.sys.pdp11, comp.sys.dec, comp.os.vms
Subject Re: QBUS Prototyping
Date Mon, 18 Apr 2011 17:26:43 +0000 (UTC)
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Cross-posted to 3 groups.

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Johnny Billquist <bqt@softjar.se> writes:

>On 2011-04-18 05:56, Bob Koehler wrote:
>> In article<hr19ad$m2m$1@Iltempo.Update.UU.SE>, Johnny Billquist<bqt@softjar.se>  writes:
>>>
>>> (Oh, and a VAX is not a PDP... :-)
>>
>>     That's right.  No VAX ever implemented the MARK instruction.  Now
>>     can you find a PDP-11 programmer who actually used it?

>I used it.
>But only to test how to, and then decided "never more". :-)

I'm guessing that instruction was developed for some compiler(s) which had
some bizarre linkages for subroutines, and very few, if any, assembly
language programmers ever used it, beyond trying to figure out what to do
with it.

(next question, which compiler(s) used it?)

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Re: QBUS Prototyping koehler@eisner.nospam.encompasserve.org (Bob Koehler) - 2011-04-18 07:56 -0500
  Re: QBUS Prototyping Johnny Billquist <bqt@softjar.se> - 2011-04-18 08:07 -0700
    Re: QBUS Prototyping moroney@world.std.spaamtrap.com (Michael Moroney) - 2011-04-18 17:26 +0000
      Re: QBUS Prototyping koehler@eisner.nospam.encompasserve.org (Bob Koehler) - 2011-04-18 12:53 -0500
      Re: QBUS Prototyping Johnny Billquist <bqt@softjar.se> - 2011-04-18 20:35 -0700
        Re: QBUS Prototyping moroney@world.std.spaamtrap.com (Michael Moroney) - 2011-04-19 15:34 +0000
          Re: QBUS Prototyping Johnny Billquist <bqt@softjar.se> - 2011-04-19 09:47 -0700
    Re: QBUS Prototyping koehler@eisner.nospam.encompasserve.org (Bob Koehler) - 2011-04-18 12:49 -0500
      Re: QBUS Prototyping Johnny Billquist <bqt@softjar.se> - 2011-04-18 20:36 -0700

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