In SX Microcontrollers, SX/B Compiler and SX-Key Tool, James Newton wrote:

I think Jim is looking for a simulator of electronic circuits that include the SX. There are none that I am aware of which can simulate both the SX and a circuit without costing a pretty good chunk of change.
 

The closest thing I've seen is 

[url=http://www.feertech.com/misim/homepage.html ]http://www.feertech.com/misim/homepage.html [/url] which will simulate PIC 16c57 chips (which the SX 28 is a superset of) while also simulating some types of external circuitry connected to the microcontroller.

 

Years ago I tried to get Ubicom (then Scenix) to fund the inclusion of the SX into MiSim, but it didn't happen. In a way, I'm glad because we would probably not have the very nice SXSIM, but the ability to simulate external hardware is important and lacking.

 

I seem to remember some talk a long time ago about the idea of somehow interfacing SXSIM to one of the open source spice simulators.

 

Having said all of that: I will again say something contriversial (amazing huh?) 

 

Simulation sucks. The BEST feature of the SX chip is that you can build the circuit, put the SX in it, and via the SX KEY, actually watch the SX run and see what is happening inside the chip. In my (never) humble opinion, that is worth a 1000 simulators.

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