PowerBook Duo 250 Control Panels, PowerBook Setup Panel

C H A P T E R 3

Software Modiﬁcations

This chapter describes the modiﬁcations made to the control panels to support the PowerBook Duo 250 computer.

PowerBook Duo 250 Control Panels

The functions controlled by the PowerBook Duo control panel have been split between two panels: PowerBook Duo Setup, and PowerBook. Having two panels makes it easier to control functions currently available with the PowerBook Duo 250 computer, and leaves room for growth. Dimming has been moved from the panel PowerBook Display, and it is now part of PowerBook. Mirror remains in PowerBook Display.

The ﬁrst panel, PowerBook Setup, controls setup functions for:

■modem port conﬁguration

■SCSI disk mode

■automatic wakeup

The second control panel, PowerBook, is a power management control panel, and it contains the battery conservation controls, including those items generally available through the Options button in PowerBook version 7.1: sleep, processor cycling, and Econo-Mode. It controls backlight dimming, and it can also automatically change the Power Manager conﬁguration based on the machine’s power source.

PowerBook Setup Panel

The PowerBook Duo 250 computer’s PowerBook Setup control panel is a modiﬁed version of the PowerBook Control Panel that shipped with System 7.1. It is essentially the same control panel, but with all power conservations features removed. It has been further modiﬁed to accommodate different modem conﬁgurations. The modem controls in the PowerBook Setup control panel distinguish between the Express Modem and other modems. Figure 3-1 shows the modem control panel.

The control panel determines what type of modem is installed and chooses the appropriate control titles. If an Express Modem is present, the title “Internal Modem” is changed to “Compatible” and “External Modem” to “Normal.” The functions associated with the radio buttons have not changed. However, the titles are different to remove the confusion generated by the incorrect use of internal/external modem when an Express Modem is installed.

If you have an Express Modem installed, you should typically use the Normal setting. In this mode, the modem is accessed through the Communications ToolBox (CTB). If you are using an application that is not CTB-aware, then you should use the Compatible setting. This will patch the existing serial driver to route serial commands through the CTB to the Express Modem.

16	PowerBook Duo 250 Control Panels