Texas Instruments 5000 Bedienungsanleitung PDF herunterladen (Seite 33)

1.3.3 Hard Disk Subsystem

The TM5000 Notebook family features a user-replaceable, 2.5 inch, (initially

either 810 million byte or 524 million byte capacity) enhanced IDE interface

Hard Disk Drive. Both drives have a 128KB buffer and can transfer data in

or out of the buffer at a 4.5 MB/second rate across the ISA Interface using

the 2 of 7 RLL code recording method.

The hard drive also features built-in power conservation features configured

from the standard CMOS Setup Routine. An Automatic Power Down mode

can be selected which powers down the drive motor during periods of

inactivity. An additional level of power conservation may also be selected

which powers down the motor plus all control circuits.

The hard drives are factory formatted as a single drive (Drive C:) and are

preloaded with software (MS-DOS, Windows and TI Utilities).

In all Pentium-based notebooks, the hard drive is connected to the VL-local

bus for increased performance.

1.3.3.1 Access to Hard Disk Drive

Access to the hard drive is provided through a removable panel on the

bottom of the notebook (removal/replacement instructions for the hard

drive are provided in Section 5).

1.3.4 Floppy Diskette Subsystem

The notebook series include a front-mounted, 3.5 inch floppy diskette drive

which is capable of reading/writing 1.44 MB floppy diskettes. An activity

indicator for the floppy drive is located along the front edge of the notebook.

1.3.5 Keyboard Subsystem

The TM5000 Notebook uses an 83-key keyboard (84 keys for international

versions) similar in layout to the TM4000E Notebook Keyboard emulating all

functions of an IBM AT-101/102 keyboard. A Special Function key (Fn

allows some of the TM5000 keyboard keys to take on additional functions

See Figure 1-10).

The keyboard’s 4mm key travel gives the touch and feel of a full-size

workstation keyboard. The Point, which is a pressure-sensitive mouse

device, is embedded in the keyboard. The select switches for the built-in

mouse device are located just below the keyboard.

Some of the major features of the keyboard include:

• 4-mm Key movement

• Integrated numeric keypad

• "Inverted T" Cursor Control Key Layout

1-16 General Description

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Texas Instruments 5000 Bedienungsanleitung Seite 33