[Simh] single cycle stepping for pdp11

[Doug Snyder]

do you have any examples of what you mean when you say "different models do
different amounts of work in a single cycle"?



On Thu, Sep 5, 2013 at 3:02 AM, Johnny Billquist <bqt at softjar.se> wrote:

> On 2013-09-05 07:15, Mark Pizzolato - Info Comm wrote:
>
>> On Wednesday, September 04, 2013 at 10:08 PM, Doug Snyder wrote:
>>
>>> it appears that simh supports single instruction stepping, but not
>>> single cycle stepping for the pdp11.
>>>
>>   >
>>
>>> if this is the case, have there been attempts or requests to add single
>>> cycle support?
>>>
>>
>> Hi Doug,
>>
>> The core behaviors of the simh simulators are built around the execution
>> of instructions.  This is the level which things are simulated at.
>>
>> What problem are you trying to solve or deal with your request to be
>> concerned about clock cycles?
>>
>
> And even further - single cycle stepping will mean different things on
> different models of the PDP-11. Or rather, different models do different
> amounts of work in a single cycle.
>
>         Johnny
>
> --
> Johnny Billquist                  || "I'm on a bus
>                                   ||  on a psychedelic trip
> email: bqt at softjar.se             ||  Reading murder books
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