Apple PowerBook 180 User Manual download pdf (Page 12)

Macintosh PowerBook 180c

Features

The Macintosh PowerBook 180c computer is a color version of the PowerBook 180

featuring a high-resolution 640 x 480 active matrix color display. With the exception

of the display and its associated circuitry, the PowerBook 180c is identical to the

PowerBook 180. From a software and hardware development perspective, the

PowerBook 180c is more closely related to the PowerBook 165c.

This chapter lists the major features of the Macintosh PowerBook 180c computer, and

describes the color LCD interface. Memory and modem expansion capabilities are

also discussed.

IMPORTANT

Only the major differences between the PowerBook 180c and the

PowerBook 180 are described in detail here. For a complete

understanding of the PowerBook 180c computer, refer to the

Macintosh PowerBook 160 and Macintosh PowerBook 180 Developer Note

▲

Features 1

The major features of the Macintosh PowerBook 180c computer are:

■

Microprocessor: Motorola 68030 running at 33 MHz. A 16 MHz power saving mode

can be selected by the user.

■

Coprocessor: Motorola 68882 FPU running at 33 MHz.

■

Read-only memory (ROM): 1 MB.

■

Random-access memory (RAM): 4 MB of pseudostatic RAM (PSRAM).

■

RAM expansion: a RAM expansion slot accommodates RAM expansion cards of up to

10 MB, for a total of 14 MB of RAM.

■

Liquid crystal display: 8-bit color video circuitry supports 256 colors on the built-in

640 x 480 pixel thin ﬁlm transistor (TFT) LCD. The display is backlit by two cold

cathode ﬂuorescent lamps.

■

Video output: 8-bit color video output circuitry supports 256 colors on all Apple color

monitors up to 16 inches in size, and 16 shades of gray on the Apple Portrait monitor.

The video output circuitry is identical to that of the PowerBook 180, supporting both

dual mode and video mirror mode. In dual mode, the LCD and external monitor are

independent. In video mirror mode, the image on the external monitor is identical to

what is displayed on the LCD.

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Apple PowerBook 180 User Manual Page 12