Computer Identification

All ROMs based on NewWorld share the same box flag. The intent is for applications to use properties in the Open Firmware tree rather than checking BoxFlag to find out the features of the machine. As with other computers that use ROM-in-RAM, a call to gestaltMachineType returns the value 406 ($196).

IMPORTANT

Programs such as control panels and installers that use the box flag to verify that this is a valid CPU on which to execute must be changed to verify the existence of the hardware they require. You should look for the features you need, rather than reading the box flag or the model string and then making assumptions about the computer's features.

Asset management software that reports the kind of machine it is run on can obtain the value of the property at Devices:device-tree:compatible in the name registry. The model string is the first program-useable string in the array of C strings in the compatible field. For the PowerBook computer, the value of the model property is PowerBook3,1.

The string obtained from the compatible property cannot be displayed to the computer user. A better method, if it is available, is to use the result from calling Gestalt ('mnam', &result) where result is a string pointer. This call returns a Pascal style string that can be displayed to the user.

Applications should not use either of these results to infer the presence of certain features; instead, applications should use Gestalt calls to test for the features they require.