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In the Commodore Amiga you can turn off and on the power light. Weird for these times.

• deleted 2y ago
  [deleted]
• kevindamm 2y ago
  On the Sega Master System there was an entire game in the ROM -- Snail Maze (the walls and floor reminiscent of the company's logo). Pressing up-left and both buttons while turning on the console with no cartridge in the slot would start the game.
  • kalleboo 2y ago
    On the Macintosh Classic, there's a whole OS boot disk image in ROM that can be activated by booting with the keys "command option X O" held down (X-O was the code name for the machine). These are the remains of a prototype for making a diskless terminal Macintosh. It comes in handy if you've hosed your boot disk somehow.
• unwind 2y ago
  That is because the power indicator LED also serves as an indicator of the audio low-pass filter. Rather quirky, yes.