the early macs
at least also have a built in ROM-Monitor :)
probably the later ones too, although I think that they stopped
including in the powermac series.
My B/W G3 still has the programmer's switch on the front
panel and I believe that the G4's we have at work still do as well.
I don't recall if the iMac's do or not. When pressed, it still drops
you to the '>' prompt but none of the manuals that ship with the
machines tell you anything about it. I've never been able to exit
back out of it without rebooting, nor have I actually gotten it to
show any of the info one generally does from a monitor program.
The G4's do, too. I've heard though, that new Power Macs being announced
next week at MacWorld Expo won't have them, due to Mac OS X.
To exit, press 'G' (for Go). Pressing 'GF' (for Go Finder) is
effectively the same as force quitting.
Tom
Applefritter
www.applefritter.com