XXDP generic memory test

Johnny Billquist bqt at update.uu.se
Thu Jan 29 18:17:55 CST 2015

On 2015-01-29 21:24, Lyle Bickley wrote:
> On Thu, 29 Jan 2015 13:51:03 -0600
> Roe Peterson <roeapeterson at gmail.com> wrote:
>> I just can't seem to figure out the right XXDP file to run for a
>> straight memory test.
> Most all of the questions related to PDP-11 diagnostics are answered in:
> http://bitsavers.trailing-edge.com/pdf/dec/pdp11/xxdp/PDP11_DiagnosticHandbook_1988.pdf

Yes. That is a really useful source of information (I have a hardcopy of 

In addition, many manuals for specific devices or CPUs actually have 
information about the specific XXDP tests for that device in the 
technical and/or user manuals.


Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt at softjar.se             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol

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