C H A P T E R 2
Software
This chapter describes the new ROM and system software features of the
PowerBook 165c computer.
ROM Software
The PowerBook 165c uses the same ROM software as the PowerBook 160/180 computers. Support for the color display is provided by the video driver located in the declaration ROM. All other software modifications are incorporated into the system software.
System Software
The PowerBook 165c computer is shipped with System 7.1 software. A system enabler file, included on the “Install Me First” disk, contains extensions to the system software necessary to support the PowerBook 165c. The system enabler file must be installed in the System Folder for the computer to boot.
Identifying the PowerBook 165c
The correct method for software to identify the Macintosh model it is running on is by using the Gestalt Manager routines described in Inside Macintosh.
The gestaltMachineType value returned by the PowerBook 165c is 50. This value can be used to obtain the machine name string as described in Inside Macintosh.
Control Panel Changes
The PowerBook and PowerBook Display control panels have been updated to support the color display and new power management profile of the PowerBook 165c. The only change visible to the user is that the PowerBook Display control panel does not turn off the backlight completely. With the backlight off, users may mistakenly think the computer is shut down, so the PowerBook Display control panel dims the backlight to a low level.
14 | ROM Software |