Apple Macintosh PowerBook 165c - Manual (Page 24)

C H A P T E R 2
Software
14 ROM Software
This chapter describes the new ROM and system software features of the
PowerBook 165c computer.
ROM Software 2
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 2
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 2
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 2
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.