[Simh] single cycle stepping for pdp11

[Mark Pizzolato - Info Comm]

OK, so the original hardware supported single cycle stepping.

What would expect to happen in the simulator if you stepped single cycles?  What details would you want to have access to after stepping at the cycle level?

From: simh-bounces at trailing-edge.com [mailto:simh-bounces at trailing-edge.com] On Behalf Of Doug Snyder
Sent: Wednesday, September 04, 2013 10:32 PM
To: Mark Pizzolato - Info Comm
Cc: simh at trailing-edge.com
Subject: Re: [Simh] single cycle stepping for pdp11

many (if not all) of the pdp11 models support single cycle stepping.  to more accurately model an actual pdp11, it would be nice if simh could model that feature.  not being able to model that feature is certainly not the end of the world, but it is a noticeable difference.

doug


On Wed, Sep 4, 2013 at 10:15 PM, Mark Pizzolato - Info Comm <Mark at infocomm.com<mailto:Mark at infocomm.com>> 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?

- Mark

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.trailing-edge.com/pipermail/simh/attachments/20130904/b0962a6c/attachment-0002.html>