Which Dec Emulation is the MOST useful and Versatile?

Kip Koon computerdoc at sc.rr.com
Fri Oct 27 00:41:40 CDT 2017

Hi Paul,
Thank you for the info.  I tend to get emulation and simulation a bit
confused.  Just so I understand simulation correctly, hardware emulation is
when the functionality of the hardware is actually implemented in hardware
somehow like VHDL in an FGPA and hardware simulation is when a program
implements the functionality of the hardware in a software program no matter
what hardware the hardware simulator is running on.  I think I got this now.
Correct?  Thanks a bunch for setting me straight.

Kip Koon
computerdoc at sc.rr.com

-----Original Message-----
From: Paul Koning [mailto:paulkoning at comcast.net] 
Sent: Thursday, October 26, 2017 4:29 PM
To: Kip Koon; General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Which Dec Emulation is the MOST useful and Versatile?

> On Oct 24, 2017, at 10:40 PM, Kip Koon via cctalk <cctalk at classiccmp.org>
> ...
> 2nd, a hardware emulator running a simulator written in 6809 assembly 
> language for the PDP-8/e running on a 6809 Core & I/O board system 
> seems like a good choice for me as I understand the 6809 microprocessor,

I would call that a software emulator; the fact that it runs on some
microprocessor eval board doesn't make a difference.  Running SIMH on a
Beaglebone would be analogous (though easier).

When you said "hardware emulator" I figured you meant an FPGA implementation
of a VHDL or Verilog model of the machine.  There are a bunch of those for a
variety of DEC computers.  One I have looked at is this one:
http://pdp2011.sytse.net/wordpress/ which incidentally is also configurable
to implement a choice of PDP11 model.


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