The keystroke will work on any Mac provided you have one of the following INITs installed:

Programmer's Key

Interrupt Button

These allow any Mac to use the Control-Command-Reset combination. I'm not sure about Interrupt Button, but I know Programmer's Key even lets you do that on a Plus, swapping the ` key for the reset key. You can also use your interrupt button this way by pressing Control-Reset (or ` on a Plus).

Both are public domain utilities and are pretty easy to find.