Re: advice for clock settings

On Sun 30 Dec 06:49, Stanislav Shwartsman wrote:

> > So is the internal beat the IPS, so that the bochs machine                  
> > will try to emulate that number of instructions per second?                 
> > But on a physical CPU, don't different types of instructions                
> > take different numbers of cycles? And isn't possible that                   
> > the same instruction may take a different number of cycles                  
> > depending on, say, where the operands are located?                          
>
> Everything is possible, it is even possible to write a full cycle accurate   
> simulator of modern out-of-order processor around Bochs.                     
> But what is the reason to do so ?                                            
> One instruction as one cycle is the simplest way to increment internal       
> time, any other would significantly slow down the emulation and not          
> required at all for common usage.                                            

Thank you for this.  You're right: it all depends on what you're
trying to do.  I suppose that bochs doesn't preserve the relative
speeds of access to "hard-disks", "floppy-disks", and "RAM".

What is most important is that it's clear what it is that
is going on.  I appreciate your help.

Thanks,

Ariel Burton


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