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4.2.3.1 External VGA Drive Capability
On the Extensa notebook, the external VGA port is provided by the port
adaptor fixture in the form of a 15-pin, female, D-type connector which can
be used to drive an external CRT (up to 1024 x 768 x 256 colors.
4.2.4
Hard Disk Subsystem
The Hard Disk Subsystem, controlled by the IDE interface compatible
NS87334 VJG Super I/O Controller on the Main Board, provides disk
storage for all system software and user files. The Extensa 51x Series
Notebooks are equipped with either a 540 or 810 million byte drive.
During the manufacturing process, Texas Instruments formats the hard
disk and then loads all supplied software including Windows 95.
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Caution: Formatting the disk drive erases any data that may be stored
on the disk. Therefore, do not attempt a format of the hard disk unless
the computer self test and diagnostics confirm that the disk has not
been formatted.
A Hard Drive activity LED is located along the top of the notebook. This LED
lights during hard drive read/write accesses.
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Caution: The notebook should not be moved when the HDD icon is lit to
prevent accidental damage to the hard drive.
4.2.5
Floppy Diskette Drive Subsystem
The Floppy Diskette Drive Subsystem consists of a Floppy Controller and
the Floppy Diskette Drive. The Floppy Diskette Drive can read/write
standard 3.5-inch diskettes.
Theory of Operation
4-5