Macintosh: Interrupt Dialog Box

Customer has purchased the Macintosh 800K Enhancement or Macintosh Plus Upgrade and notices that when pressing "Interrupt" or the Programers Switch a ">" appears in a dialog box. The prompt and dialog box did not appear on the customers Macintosh 512K before the upgrade occured.
This is not a software or hardware failure, but an added enhancement made to ROM for programing purposes. Pressing the interrupt switch after booting to the "desktop" or executing a program will cause the Macintosh to drop into the Mini-Debugger.

To exit the Mini-Debugger type "G" and press "RETURN". This will allow the user to resume work without having to reboot the computer.
Published Date: Feb 18, 2012