Apple used to use it in the PowerPC days as did Sun - https://en.wikipedia.org/wiki/Open_Firmware https://en.wikipedia.org/wiki/Open_Firmware http://www.brendan

Apple used to use it in the PowerPC days as did Sun - https://en.wikipedia.org/wiki/Open_Firmware https://en.wikipedia.org/wiki/Open_Firmware http://www.brendangregg.com/Sun/obp.html http://www.brendangregg.com/Sun/obp.html