![]() The approach uses a small ROM that contains sufficient code to initialize the hardware and load an operating system. Open Firmware is then capable of using these drivers to load an operating system from the device.Īpple's Open Firmware is part of their ROM-in-RAM design approach originally used in the first iMac systems. These drivers can either be integrated into the Open Firmware or provided on an external device, thus providing plug and play capabilities for new boot devices. Open Firmware probes the PCI bus for devices and possible Open Firmware device drivers for those devices. Open Firmware exists to provide a machine independent means of loading operating systems, from a variety of boot devices. ![]() ![]() Open Firmware is a boot environment developed using the Forth programming language. ![]()
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