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Open Firmware Tricks

By Adam Knight » Posted on February 24, 2005 - 8:22am
  • Reduce the amount of memory your computer uses, or “remove” a RAM stick in software by editing what Open Firmware sees on the logic board.
  • Reset Open Firmware to resolve general hardware issues. Enter Open Firmware with CMD-OPT-O-F after a restart and then type in reset-nvram then set-defaults and, finally, reset-all to restart the computer.
  • Useless trivia: A side effect of Open Firmware’s stack-based command structure is that it doubles as an RPN calculator. Try the following: 2 2 + .
  • You can access Open Firmware over telnet if you really want to.

I’m sure there’s more. Smiling

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About Adam Knight
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Author Biography

Adam Knight is one of the founders of Mac Geekery and is a geek at heart. Programmer by day, hacker by night, his daily life revolves around the Macintosh platform, which he has been a user and programmer for since the early days of System 7 when his LCII replaced his Apple //c.

In-between tech jobs, he’s managed to learn the basics of any web hacker: PHP, MySQL, Perl, Apache, Linux, *BSD, and the intricacies of ./configure —prefix=~/bombshelter/. Today, codepoet is concentrating on blogging again, writing some software for the Mac by himself (including Notae) and for his company (such as Switchblade) and has a few other toys coming out soon.

Bug him over AIM or email [link fixed].

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